Thursday, 21 December 2017

Geoff.

Windoze ME
Hi team

I hope to eventually introduce new pages to the Blog.

    On Aviation.
Flying, Gliding and the other forms. 1971 - 1986


On other Mining Adventures.

    South Australia.
Olympic Dam, 1986. and again 2001.

    Western Australia 1986-1992
Cork Tree Well
Harbor Lights
Woomerina Pool (Alluvial gold)
Blue Bird, Endeavor Resources & finally evolving into St Barbara Mine.

    NSW
Ginkgo / Snapper mine (Rare earths).

    China 1992-1996
Oi Ling Ding (China)
Woo Sek Koo (China)

    Tasmania. 2008- 2014
Managing Comstock Mine. Tas. 
Lesley Vale Quarry.  Where it takes a week to do half a days work..




Saturday, 16 December 2017

Story 30. Will the last one to leave please turn out the light.

Mt Gunson Mine, EMECO. 1986

March 1986 with the mine closing in 5 months Brian McMahon from McMahon's asked me to help with a three month supervisors role working for a company called Kinhill Sterns as part of RMS (Roxby Management Services) who had several civil jobs they were in urgent need to start at the new underground mine site 140 km north of Mt Gunson called Olympic Dam. This was the ore body Alan Turnbull had been shown two or three Christmas's previous from Roxby Downs Station.


About a month before I commenced my contract at Olympic Dam an unwashed rent a crowd of protesters had set off with much publicity to walk from Adelaide to Olympic Dam as a protest over the uranium mine.

Uranium was simply a by product of the much much larger OD copper mining operation 1989 (66,000 tonnes produced from a plant capable of 200,000 tonnes pa) along with a number of other by products like Uranium oxide (1988. 4,300 tonnes pa) gold (1988.  80,000 oz), silver. (1988. 850,000 oz)
The protesters powered by an ancient tribal mentality with no apatite for facts gained TV coverage along the way as they approached OD, what wasn't covered on the news service was their habit of over painting or defacing all road side signage, or the fact apart from their equipment and supplies being carried by an old Austen 1950s vintage motor car their garbage and anything unwanted was simply discarded along the road side.

I arrived at Olympic Dam while the feral protesters were having a brief stop at the US Airforce's Nurrungar satellite base just out of Woomera for a spot of TV protesting and a launch of a much advertised radar jamming balloon packed with foil they intended to launch high over the base. This highly anticipated launch became a bit of a fizzer when the balloon developed a serious leak after colliding with a bullet from an unknown source at about 50 feet, it returned to earth looking very much like an oversize used condom. The non existing radar at the base was never in any danger of being jammed as the station talked to passing satellites via a large steerable dish. Without a suitable radar reflector and small descent parachute attached, the balloon would have been a potential invisible danger to overflying commercial aircraft and its passengers should it become ingested into one of the high bypass engines.

Their eventual arrival at the OD main gate caused very little trouble until the media arrived, once the cameras appeared things went crazy for a time, quickly returning to normal the moment the media left.

A month of camping along side the main gate quickly turned the camp into a mess, litter blowing about and the general smell of the unwashed protesters defecating in the nearby bush and with daytime temperatures often climbing into the 40's (100+F) their health was causing management some concern.
A news announcement was planned and the media flown to site.
Due to the untidy mess and defaced signage at the main gate, management chose to hold the event about a half a km further along the fence, well away from the main gate.
Once the rent a group flocked to the press site to began the latest media performance, a large bulldozer slipped out through the locked main gate and quickly buried their vintage Austen, making sure any chance of its discovery would be made even more difficult by disturbing several alternate locations.

A water truck was later supplied for the feral group to use to top up their water containers, bathe and generally clean themselves. A bus was also arranged to transport them back to Adelaide, their habit of painting and tagging objects continued with the water cart being spray painted with slogans as they demonstrated their thanks and lack respect for the free 20,000 liters of fresh water and the private property that delivered it.


The Task.
Roxby Management Services (RMS) wanted someone to initiate and supervise several projects they were in urgent need of starting. One was to provide an upgrade of a bush track that ran 136km  north to a series of water bores that supplied the newly completed desalination plant, they wanted to truck the water down as an interim measure, a planned pipeline would eventually replace the triple water carts in a year or two.

With several contract employees and administration approval I quickly began pushing the access road northward.
About 15km along what was to become the bore field road I was standing on a sand hill overlooking the operation when a new Toyota 4WD stopped and a visiting group of under grad university engineers got out. They were instantly covered in flies as they climbed the sand hill, vigorously waving their hands back and forth in the great Ozzy salute in a pointless attempt to keep the flies away. After joining me to ask questions as to what was going on and what the role of each of the machines in the operation they made notes took photos and began to leave. One young lady showing a little more observational powers than her contemporaries approached and noting I had very few flies bothering me asked if I used some sort of fly repellent?

I  replied I use an old aborigine trick to keep the flies away from my face.
Suddenly interested she asked, what was the secret ?
I said simply, I don't wipe my bum.


The look of shock and surprise showed the answer had taken her back a little.
I waited a little then added, The true secret is not to use perfume or perfumed soap, flies can smell it from miles away. So which version of the secret are you going to tell your fellow travelers? I asked.
Her face changed and she smiled, "Ill have to think about that one".

I had an Aboriginal grader driver helping, one day as we came against a pegged off area.
He approached me to let me know a number of Elders were expected to visit our road project to advise us on the direction the road could take around a sacred site, I had known of the planned visit but hadn't mentioned it to anyone. He went on to inform me the dust way off on the horizon was the visitors and this wasn't his land and there could be trouble if he was seen on it uninvited.
Before us stood a small mound, surrounded by a ring of larger rocks, obviously signifying something special about the ground .
Knowing the problems he might face I informed him to take my vehicle and disappear into the scrub for an hour or so.

Fifteen minutes later three new 4WD vehicles pulled up at the end of the road, I was a little puzzled to see my vehicle still parked close by as the several visiting elders climbed out.
They looked about for a few minutes before one walked up to me, his first words were, WHERE ARE WE BOSS?
It seemed the traditional owners of this land had never set foot on it and lived somewhere up in Queensland.
After introductions and a lot of walking about, pegs were hammered in and hands shaken as the elders directed us around the chosen sacred sites.
They then climbed back into the vehicles and headed off back the way they had come.
I peered into my parked vehicle expecting to see my aboriginal grader driver hiding inside, instead the car was empty.
I turned to walk away when behind me appeared the aboriginal soaking wet.
Surprised by his condition and sudden appearance, I asked him where he had been.
He smiled then replied, I hid in the back of the water truck, I knew they wouldn't find me in there, because aboriginals don't like water,  
I asked him if he knew the significance of the mound and ring of large rocks we were going round.
He looked at the mound for a moment then replied that's not an Aboriginal sacred site.
I was taken back a little by his comment. It's not? I asked.
Na, he said, When was the last time you saw an Aboriginal lift a one ton rock, referring to the large rocky ring surrounding the mound.


A second project was to build a road and maintenance access track from the northern switch yard to the site where the proposed town of Roxby Downs was planned.
A second team was formed and they set off starting from the southern end with a D8 dozer, three Ford Louisville trucks a Loader, Grader.
Our Dozer operator was a Polish migrant who had first worked on the famous Snowy Mountains Hydro Project then spent twenty years working in the bush often on his own. He could push and cut to level with only basic measurements and was easily one of the best dozer operators I had come across. He was often some way ahead of the main work group pushing trees and clearing vegetation while performing a little leveling between the sand dunes.
Like all bushmen he had a bit of a drinking problem which had little effect on his amazing abilities with the dozer.
Lunch time he preferred to simply sit on his machine and have a couple of quiet beers, something highly frowned on by management, but knowing his ability would save the company hundreds of hours and thousands of dollars I said nothing.
His wife would often pay him a visit during the lunch breaks, the two would sit under a near-by shady tree and wash their lunch down with a beer or two.
One day I drove to where the dozer was parked to touch base with him when I discovered them both on the side of the sand hill completely naked and having sex. My base touching could wait till later, I thought.
Inspecting  the completed access track I came a cross a small group standing on a sand hill near the southern end. I approached them to discover they were looking at the site with a copy of the town laid out on a large plan.
I inspected the drawings with interest when one of the town planners approached and asked what I thought of the way the town was laid out.
I looked at the numerous curved streets and disjointed access roads and said simply, "its shit".
Taken back a little he explained the curved roads were to control the traffic speed and make the town a safe place for children to play on.
I smiled and explained, this layout had been used in the suburb of Elizabeth in Adelaide and has proved to be a dead flop, It wont stop speeding drivers, it has made every road a blind road, and the day time temperatures here are usually in the high thirties to mid forties kid wont want to play out on a hot bitumen road in those sort of temperatures and there is no easy access connecting road east west or north south through the town for an ambulance. Having said enough I left.
The town was eventually built to the same plan clearly demonstrating the lack of intelligence shown by the Roxby Down town planners who were were clearly in love with curves and not convenience.
     

A third project was to clear, push and build an access track suitable for semi-trailers to off load the 133kva power line components for the towers all the way from the Northern switch yard in Olympic Dam to Woomera 90 or so km south.
The Polish dozer driver set off through the trees and scrub followed by the grader, eventually breaking out onto the gibber plain about twenty km south of OD.
This was where I caught up with him one day to check his progress.
While we were there, a battered Toyota ute appeared and stopped along side.
It was the actual owner of the Olympic Dam property Tom Allison.

Tom had originally farmed a property in the Hunter Valley NSW many years before when one day an exploration drilling team discovered coal, lots and lots of coal under his property. Eventually Tom was forced to sell up and a large coal mine was built, leaving Tom very peeved.
Tom and his wife brought a property in the far remote outback of South Australia in a place no one had ever heard of,  far from the cities and any bloody mining developers.
Then just a few days before Christmas 1983 an exploration drilling team, working near a dam that had been put in in 1956, called Olympic Dam in recognition of the Olympic Games being held in Melbourne that year. The drill brought up some very interesting drill cores, now three years later the Olympic Dam project was putting Tom though the very same problems he ran away from years earlier in the Hunter Valley.

It was obvious Tom was not at all happy to see me or the dozer on the pristine gibber field, (neither was I) as he approached.
What the fuck are you doing here he said, (using the polite version)      
Its an access track for the 133kva powerline to Woomera I explained.
It's suppose to be five km further east Tom explained.
I retrieved my plan and spread it out over the bonnet of my vehicle to show him.
Like fuck it is Tom said (loudly) after studying the plan for a few moments.
Can you stop till I sort this out? he asked.
It was early afternoon and I had no problem so told the operator to catch up with me in the morning before leaving site and to complete his paperwork as per normal.
Visiting the construction and development office in the morning I inquired about out come of Toms visit and the problem he had with the access track.
RMS management had sorted the problem out and I was to proceed as normal.

Tom made no further visits.

20 years later I met Tom and his wife Allison by accident, when they were stopped on the side of the road between Port Augusta and Woomera. Tom, driving a large Winnebago, his wife following along behind with a large Toyota 4WD towing an even larger boat, they were on their way north to do spot of fishing, They had eventually sold Roxby Down Station to Western Mining and moved on, we both had a good laugh when we recounted our first meeting.

RMS wanted to move the location of the service station out from the rapidly growing construction accommodation camp area, something I was also expanding as another of my projects, to a location on the east side of the planned and yet to be built, main north south highway between Olympic Dam and the proposed site of the Roxby Downs township which at that time only existed in the drawing office, the only work on the town of Roxby Downs at this stage was an access and maintenance track for the power line I recently completed which began in the northern switch yard and ended in a patch of scrub leading off to nowhere.

I set off to build a one kilometer long section of main highway that started at the base of a sand hill and ended where the existing access road met the eastern end of the airfield runway, (also under construction) The questions and looks when people discovered a magnificent one kilometer section of main highway complete with camber, drains, marker posts, shoulders and signage ending against a sand hill and going no where kept me busy when ever I entered the wet-mess.
Along side this section of road I flattened a sand hill and formed and hard stand pad for the location of the service station and other structures along side.
After removing the sand to obtain the correct basement level the task was to provide a 400mm fill of clay rubble from which to start. A problem quickly became obvious when I received the plans for the fill and discovered when comparing both the final highway design level and the apron of the service station didn't match, either the final level of the highway was one meter lower than it should have been or the service station apron was one meter higher than indicated on the plan. I consulted with the onsite surveyors to find where the discrepancy lay.
After a day resurveying we discovered both sites were correct, according to the drawings and yet the access to the service station didn't match.
A consultation with both RMS and the director of WMC Mr Hugh Morgan who was ultimately responsible for the project were just as perplexed.
All work stopped while the problem went back to the engineers and the drawing office. The problem was all projects operated under a tight budget and although the highway had moneys left having come in under budget, the removal of the top of the sand hill had cost slightly more than expected despite using a more efficient and certainly faster method of an open bowel scraper.
With insufficient funds remaining in the budget to remove an additional meter from the entire service station site it was decided to simply continue construction from the current plan level.

It was later discovered the drawing office had failed to carry a one (1 meter) when finishing off the drawing so the figures, costings and final volumes were out by some 150,000 cubic meters.

To this day the service station sits exactly one meter higher than my section of the main access highway.   


After three months on site RMS (Roxby Management Services) and after completing almost a dozen or so projects my contract with Kinhill Sterns was up and I returned to Mt Gunson Mine to help continue with the mine closure.
     


Mt Gunson Mine, August 1986.

The last three days.

I was sitting in a pair of shorts and expensive shirt finally enjoying a day off after weeks of washing moving sorting identifying and generally preparing the mine for sale.

August 1986. The last month of the Australian winter and I was wearing shorts and tee shirts in what should have been a cold miserable winter. 1986 found most of the southern part of Australia still in the grips of four years of drought, our annual 4 inch rainfall had been absent for over four years, gone, nothing, the country was open, bare, just red sand for as far as you could see, no grass, the low branches of the trees had been eaten years ago by the departing sheep and cattle leaving only the trunk and a high sparse thin canopy above offering very little shade, despite the tree climbing ability of the local rabbits putting in their best efforts to eat what little green was left.
It was becoming hard just to remember what the country side looked like three or four years ago.
It was just bloody dry making our years of effort at restoration and regeneration of the mine area difficult, and appearing to have been just a wast of time.

El Nino, a warm body of water in the central Pacific Ocean had been almost stationary for four years and was effectively drawing the moisture away from the Australian continent and into the Central, Eastern Pacific area.
 

The operations at Mt Gunson Mine had ended a month earlier, the equipment all parked up now sat idle, we had spent most of the previous month washing every piece of equipment in preparation for the auction, all parked shoulder to shoulder in a large semicircle around the front of the workshop.
Most of the employees had left site, bonuses paid, rooms emptied, car-park emptied, power and water turned off to all but essential services.
I had moved out of the house at the Town Center and back into the single men's camp, living in what had been Allen Turnbull's house.


AUCTION 14th 15th 16th AUGUST  1986.
An entire Mine site for sale 
CAT Earth moving equipment 12 x 769A,B & C series plus 3 x 773B Dump trucks. CAT 991B and 5 CAT 988B highlift loaders, CAT D9L, D9H Dozers,  Komatsu dozer,  12e and 140G Graders, 20 Toyota 4WD, vehicles, bus's, small trucks.
Ball-Mill, Primary and gyratory crushers storage bins and conveyors, sundry vehicles.
Mine Store, 15 transportable house, An entire 100 man camp, kitchen, freezers, refrigerators, 3 complete laundry's. 
Administration office, large IBM computer, tables, chairs, filing cabinets storage.
Lighting plants, pumps, power lines, Polly pipe and welder.
Large Workshop building suitable for Earth moving equipment, Complete service truck, 20 ton Crane. fittings, An entire store of spares, lighting, crib room and ablution block.
Auction held over three days.

On and on the notice read over twenty pages of items, each numbered, catalogued washed and on offer.


With the auction just two days away the number of on site employees were just fifteen or twenty people, it was hard to keep up as each day they continued to leave in ones and two's.

It was also hard to believe in less than five days the place I called home for almost nine years would be sold and gone forever.

I was packing a few more things into my trailer, the house was mostly empty when around 4pm a wet misty fog drifted in, hardly enough to wet anything it was so light, it continued for a good hour gradually becoming a heavy mist the floating drops coating everything in an unenthusiastic wetness.

I was standing on the front porch watching still dressed in shorts and tee shirt, when a car pulled up and Terry, one of the few remaining employees jumped out and approached me.

I've just come back from Woomera, he began quickly adding, do you know every power pole on the road coming in from the highway all the way to the mine is either smoking or on fire Terry said.

Your kidding me, I replied.
8 km of Burning power poles.
Not kidding he replied.
Aw, Shit! I returned, as I headed to my vehicle and drove out to check.

As we passed over the famous Cattle Grid and turned onto the main straight along the road ahead of me for as far as I could see every power pole standing along side the road had smoke or a fire silently burning on the top of the actual pole. The mist by now was turning into a very light rain, there were no sounds at all making the whole scene appear surreal.

We returned to the truck shop where I sent Terry off to alert DOC the last remaining manager on site while I entered the workshop and found the keys for the water truck and the 992 Loader knowing it had a reasonable quantity of fuel.
I checked the water cart and discovered it still had hoses and fuel on board but the water tank was completely empty.
By the time I had checked and started both vehicles both Terry and DOC joined me.

We confirmed what was happening, DOC set off to ring the Woomera power company and inform them of the situation and to organise some one to shut the power off.

While he headed off to make the phone calls I discovered Terry had never driven a vehicle with a crash type gear box (non synchromesh) and had never sat in a front end loader, I realised there were only two people on the entire site who could operate any of the equipment DOC and myself the remainder were either involved with the auction company, the store or camp and kitchen staff.

I started the old fire truck and with Terry on board, moved off as I placed the vehicle in second gear I jumped off informing Terry not to try to change gears and instead drive it down the haul road to the mine where I knew the overhead tank was still full, I would catch up with him there.

I then climbed into the loader and soon had it heading after the water truck, passing it along the way even though I was going slow in an effort not to fling mud over the clean machine.

Together we managed to back under and fill the water truck before heading off toward the power poles, by then the rain had become noticeably heavier.

Just a little way past the Cattle Grid we parked on the side of the road as the sun set and sat in the growing darkness watching the pole fires silently burn in the rain.

After years of no rain the tops of the poles and the cross trees had accumulated a layer of dust.
With the wet mist proceeding the rain the dust had become wet and saturated then began to conduct electricity allowing the electrical power to leak across the pole generating heat eventually becoming hot enough to ignite the wooden cross arms and the pole.


After ten or fifteen minutes, DOC arrived informing us the power company had been informed and someone was on their way to shut it off, he had also stopped by the camp and informed the kitchen staff of the situation.

The three of us could only watch and wait.

Eventually through the heavy driving rain we could see a vehicle slowly making its way toward us.
It stopped on the road as we approached, the drivers side window cracked open a little way and from somewhere inside the darkness a voice informed us the power was now off.

Without waiting the vehicle made a three point turn on the road making sure it wasn't going to fall off and end up in the thick red mud before it headed off the way if had come.

We fired up the water truck and loader and moved into position at the first pole.
DOC climbed into the loader while I tied the hose to the side of the bucket and with the water truck along side I was raised up to the same height as the power line.

As I turned on the tap I had an ugly thought, that I hoped the unseen voice inside the mystery vehicle wasn't a practical joker.

I splashed the hose over the power lines a couple of times to check for a reaction in the process accidentally splashed one of the hot ceramic insulators, it instantly exploded, sending sharp chunks of hot ceramics flying off in all directions.

Even close up there was no noise as the fire quietly ate its way down inside the poles dry center.
It was an easy job to simply fill the hollow to put the fire out, before signaling DOC to move the loader on to the next pole.

And so our trio progressed in the pitch black darkness one pole at a time.
After a few poles I was almost knee deep in water inside the bucket which sloshed uncomfortably back and forth each time the loader moved.

It was approaching midnight by the time we reached the last pole where my swimming pool and I were eventually lowered to the ground.

We shut down the loader, deciding to leave it in place until the morning, then waded through the sea of mud to where the firetruck had parked on the road, with torrential rain falling, the three of us covered head to foot in the red muddy clay with streaks of black charcoal, all of us still dressed in light summer clothing and for the first time I realised the actual temperature had also dropped to near freezing.

Every day this mine has operated, DOC began, it had always tossed up one unexpected problem after another, and here it is with just two days to go before it is sold, it is still throwing up problems.

I had to agree having spent a lot of my time involved with fixing them

I jumped into the fire truck and using all the gears, the three of us headed back to where DOC had parked his vehicle almost 8km away.

Back in camp I dropped Terry off and headed home where I managed to have a luke warm shower in the dark before falling into bed.

By morning the rain had passed, by mid morning I set out in the grader taking it very slowly so as not to get the machine too dirty as most of the wash equipment and hoses had been stored away and catalogued, the job was to tidy up and grade the access road for the hundreds of visitors about to descend on the site. With the road made tidy I set off to retrieve the loader and by midnight had everything washed and placed back into position for the auction to start in the morning.

By 9am there were thousands of visitors wandering about site reading, climbing and poking about.
as the auction got underway.

About 6pm the auction ended for the day and I returned to camp, the kitchen staff informed me they had no one available to open the bar, so I stepped in and not knowing the prices of the goods simply sold every thing for either $2 if it was a beer or $1 if it was anything else, giving the remaining working staff credit with a promise they pay me one day next week.

By the end of auction day two the kitchen bar and the entire camp were sold and in the process of being broken up and loaded onto waiting trucks, Terry was attempting to disconnect water supplies with no tools or parts as they had been auctioned off the previous day and were no longer available.
Buildings were simply lifted onto departing trailers often without disconnecting the plumbing,  often by having the water fittings and pipes simply cut with a panel saw, leaving the water to simply flood onto the ground with no care or attempt to stem the flow.  By the end of day two, with nowhere to sleep, eat or drink and with people, trucks, cranes and chaos everywhere I said my good buys and drove away.


 RETURN VISIT:
It was eighteen years before I dropped in one day to visit the site.

Chuckling as I drove along the access road at the sight of the tree branches we had used to replace the burnt and damaged cross trees on the power poles many years ago.

The regeneration areas were flourishing, the trillions of seeds, tree planting and grasses were in abundance so much so I had difficulty identifying where the mine and natural landscape joined.
 
The site living quarters, workshop and mill area looked empty, flat, barren and gave no hint of its former operation.
The single men's camp was unrecognisable only the tree I had nurtured to shade my room in 1978 when I lived in Tin Pan Alley still stood, now fully grown. Even using it as a reference point I still had difficulty placing things.

I visited the area near the town center where my house once stood, just a concrete driveway remained.

The oval fence remained, it was now surrounding a large open sandy area where a few tufts of tall grass grew.
The Town Center stood in disrepair, birds nesting in the roof and open wall panels, red sand built up in the doorways.
The empty pool slowly filling with drift sand.

As I drove away I found it hard to believe I had spent almost nine years working the mine and thought the roads could do with a bit of a grade.

In a book written in 1983 by CSR  Basil Corkin before EMECO turned it into a highly profitable and successful mine, I'm listed as B. Osbourne, I think?  CSR couldn't get even that bit right.


end.

Dec. 2017.


Thursday, 14 December 2017

Story 29. Explosives.


Light work.

When I first began working in the mine I often stayed back to help with the loading of the shot with the blast crew.
The Mt Gunson Mine office up till the late1970s sat near the rim of the eastern part of the pit. Over time the mining operation had moved the pit a little closer.

A regular blast in the North Eastern corner of the pit one day caught every one a little by surprise when after checking the results and declaring the pit safe we arrived back in the office to discover one rock, about the size of a bowler hat had crashed through the roof of the office leaving quite an impressive hole in the roof and lay on the floor after having also passed with little effort, through the drawing office light table, destroying it on the way through.

The entire office complex, crib-room and toilets were soon after relocated much farther back and well out of harms way.



Protective Rubber:

CAT 769B
Up until the 1980's blasting of the ore body was done using electric detonators and a Beethoven exploder, this initiation device was housed in a box about the size of a loaf of bread, after connecting the detonator wires to it a crank handle on the side was given a few vigorous turns then a button on top was pushed sending an electrical current along the wires to excite and cause the demise of the detonators.

Until the construction of Brownies Bunker ( after Warren Brown the mine manager ) a heavy steel plate box lined on the outside with railway sleepers, and supported on heavy steel skids which made the task a little easier. Previously all electric initiations were done simply by parking one of the 40ton dump trucks with the rear of the truck toward the shot, close but not too close, with the heavy steel tray raised.
The shot firer simply positioned himself in front of the rear dual wheels and fired the shot while pressing him self up close to the tires. 
The successful shot was quickly followed by an impressive number of sizable rocks whizzing past, rebounding and pinging off the large tires.
             


Saturday Morning.

Jimmy Drain, one of the driller / shot firers on site, careful and confident.
Exactly what was needed when regularly letting off 10 or more ton of explosive on a daily basis.

I often found myself helping Jim, either loading shot or assisting him with loading or unloading the truck for a shot.
It was a Saturday morning, also a down weekend so the site was reduced to just a hand full of people mainly fitters or maintenance personnel, the two of us had loaded a shot in a new second pit after the company became interested in exposing an area of shallow ore quite near the surface in the original mine workings, in an area called, The Main Open Cut, cica 1920 / 50's, this work area was about three km east of the Mt Gunson, Cattle Grid Mine.

We had completed loading the shot an hour earlier than expected and had cleaned up the site in preparation for an early departure. We sat in the vehicle waiting for the advertised blast time to arrive so we could fire the shot, despite there being only a few people about and we were not expecting any visitors we stuck to procedure and the advertised blast time.

With a quarter hour before the blast Jim set off in his ute to do a safety and clearance inspection of the pit and general area making sure all was clear and no "unexpected visitors" had strayed into the area.

I remained in my vehicle parked across the only access road effectively blocking it to all traffic when Jim called me on the radio simply to check no one had passed by, then advised he was about to light the safety fuse before joining me parked seven hundred meters down the road and well away from the 5 ton of explosive we were about to detonate. 
Less then a minute later Jim's ute appeared as he joined me at the road block.

As my vehicle was facing the blast he simply pulled up alongside and climbed out of his vehicle to join me in mine as we waited.
I cut the fuse about a minute longer than normal he said as the two of us waited.

He checked his watch, 30 seconds he said.
Then, a short time later the ground shook and rumbled as the delays fired, although we couldn't see directly into the small pit we could easily see the rock and dust rising as the noise of the blast arrived.

We waited in silence for the dust to clear.

A good twenty seconds past when we both became aware of a strange whooshing noise.
We both sat in silence listening, as the noise grew louder.
"Incoming" Jim warned as we both realized a rock of unknown size, weight and velocity was fast approaching from some where high above.
We could only sit and listen as the noise grew louder hoping we weren't included as part of it's landing area.

A rock, about the size of a bread basket weighing in at ten or more kilograms landed with a definitive thump just meter behind Jim's Ute and less than three meters from where the two of us sat.
  
Hmm, he said, then after a pause, it missed.







The Last Overburden Blast in the Cattle Grid.   1986.

After a third nine month extension to the Cattle Grid Pit EMECO decided it was time to end the mining operation, this was forced in them not by the exhaustion of the ore body, but simply by the boom in the Australian Mining industry in general. EMECO were associated with a new mining company in Western Australia,  AWP (Mr. Alexander, Walker & Piper, who later went on to become Walker & Piper,) This new group had originally been the interested buyers of the CSR Mt Gunson Mining equipment, almost three years earlier.
They had a contract to open up a new gold mine near Laverton in Western Australia. At the time Australia was in the beginning of the mining boom, all forms of mining equipment were becoming hard to get, any new machines had a minimum of a two year waiting list.
The owners of this new Western Australian mine called ((Austwhim Resources NL, then, Austwhim, then Dominion mining) Cork Tree Well mine were becoming anxious for the operation to start.

The last Mt Gunson Mine overburden shot was a slightly bigger one than usual, in an attempt to help run down the stock of explosives we had on site.

News of the last shot spread far and wide, soon visitors from nearby stations rang asking if it was possible to watch, high ranking military and people from Woomera began to join the requests to attend.

We prepared and graded a suitable viewing area, decorated with pegs and coloured tape along with helpful staff to help look after the hundred or so visitors.

The pit and access roads were all graded and tidied.

The shot had been drilled and almost forty tons of explosives loaded and made ready, toward the end of the day the crowd began to grow in numbers.
Finally as the advertised time approached we performed the usual safety checks of the pit, both in and the surrounding roads and country side for any visitors.

The main road was blocked at the cattle grid and all was made ready.

I stood in the crowded observation area as the safety vehicle drove past tooting to indicate all was ready before he took up position by blocking off the assess road into the pit.

The shot firer was the only person in the pit and could be seen standing next to Brownies Bunker waiting for the signal to fire.

The crowd stood quiet and watching  to see what happens next.

I checked the time then at the exact time advertised I took off and waved my hard hat over my head slowly side to side. This signal was repeated by the shot firer almost a half a km away in the bottom of the pit who then disappeared into the brown square box.

Two or three seconds later I watched as the down line flash across the top of the shot at somewhere near 2280ft pr/sec initiating all the detonators.  Milli seconds later the first of the front holes went off the rest quickly followed in 15mill second delays later.
The ground shook in response as each 21mtr long 150mm diameter column of explosive detonated pushing a wall of rock dirt and dust into the air quickly obscuring the shot from further view.

From the growing wall of dust a large 15 or so ton rock appeared, it floated upward instantly causing me to question how something the size of a volkswagon could have survived the violence going on and yet remained intact and how it could have been kicked out of the shot.

The rock continued to rise as though powered by some invisible jet engine as it drew closer and larger rotating backward indicating it had somehow been booted from below and low down.
Still some way off the rock continued to rise easily passing the level of the gathered group of visitors, with insufficient forward velocity I noted it would fall well short of our location as it continued upward unexpectedly splitting in two almost equal halves both continuing to rotate in perfect formation as they began their descent, eventually landing with a dull double thud in the bottom of the waste dump some way below.

Curios I thought still puzzled by its appearance, while my mind ran through the maths of how much explosive would be needed to propel something with a 1500kg mass almost 100 meters into the air.

Turning I discovered I was the sole person still standing at the edge of the viewing area, every else one for some reason having moved well back.


Monday, 11 December 2017

Story 28. From Cowboy's to Prima Donna's.

The Early 1980's

After living in Tin Pan Alley (Single men's quarters) for a little over two and a half years I brought a 31 foot Caravan and with my wife moved into the small Caravan Park on site. As well as the caravan a 25ft transportable building was also supplied with each caravan site to provide additional accommodation space, the caravan park was located about 5km south of the Mill, near what was called the Town Center.
Two years later I was allocated a staff house along with a 14 hour work day,

The Town Center was a large community building where pictures were shown a few times a week, it housed a very basic store, for grocery items. a good size swimming pool, and a grassed sports oval that kept the kangaroos in the area well fed, their droppings becoming one of the dangers to avoid when being tackled to the ground during a football match.

Next to the swimming pool was single teacher, multi class primary school, children entering secondary school were transported by bus 30 km into Woomera each day.

As you approached the Town Center and the school, located on the side of the road was the usual road side signage warning of children crossing the road or playing in the area.
The sign also had a speed restriction.
Below the sign someone had placed a second sign that read,
"ANY CHILD KILLED ON THIS ROAD WILL NEED TO BE INSTANTLY REPLACED BY THE PERSON RESPONSIBLE".
This sign could be read two separate ways, though most saw it as humorous, some never got the ironic message.

The Mount Gunson Football team played and trained on the Oval and were reasonably successful in the district. After winning a premiership one year a few of the members of the team went to the famous SPUD'S Road House in Pimba after it closed one night, Spud kept a pet camel near by, as a tourist attraction, the team members crept into the pen and painted the unsuspecting dromedary in the team football colours.
 
A road sign at the top of the hill as you headed back toward the mill from the Town Center indicted the road, "slippery when wet" this also carried the message, "BEWARE  OF GRUESOME"  referring to a nick name and the driving habits of one of the many characters on site who had a habit of falling off the road.

In mining operators egos often become inflated as they gain new skills or become proficient at operating a particular machine or performing a task. It's all part of being a macho man, and the natural competitiveness of people having, in their mind demonstrated their superior skills.
Any operator displaying or acting superior in mining is usually taken as a good indication that trouble is not far away as these operators will often push the boundaries of safety, in search of new conquests, or in an effort to display their superior skill.

In actual fact the best and usually the most productive equipment operators are always the "quiet achievers" those who have nothing to prove and simply get on with the task in hand.

When I first became involved in mining the top operators wore fancy scrollwork leather cowboy boots, RM. Williams peg tight jeans and a western style shirt along with a tired well worn dusty cowboy hat.
Cowboys, seldom shaved unless going to town, they could, out smoke, out drink and out talk anyone in the bar.
Some Cowboys because of their chain smoking and total lack of personal hygiene often out stank the local goat population as well, as they spent very little time or effort maintaining themselves, or keeping their working environment clean, preferring to spend the working day operating an expensive machine while waiting to knock off so they could top up their hangover.

As earth moving machinery became more and more expensive the management and company directors began to look in detail at the operating costs and began to require operators to be more intelligent and to show they care not only for the machine but for the health and welfare of the company as well.

Starting in the1990's and becoming compulsory by the 2000's mines began requiring operators to pass both a drug and alcohol test each day prior to commencing work, effectively ending the reign of the rooting tooting Cowboys.

Not that they had vanished completely, Cowboys were quickly replaced by a new superior operator the, Prima Donna, a new breed of ego powered Macho men, who liked to also push the boundaries. Working out in the gym and drinking powdered encrustation supplements in the misguided quest to burn off every ounce of fat in an endless and financially expensive pursuit of the elusive body beautiful.

Like kids, occasionally we would come across a worker who always had trouble getting up early most mornings, they would lay in bed till the last possible minute when someone would bang on their door when they finally rose they would rush about to get dressed, and ready for work, often holding up the rest of the crew who were much better organised and a little pissed off having to wait for him every morning.
One of the crew dropped in to see me and ask how he could change the workers attitude.

Early the next morning the crew watched as I knocked on the workers door who after acknowledging the wake up call simply did as usual rolled over and went back to sleep.
I returned a few minutes later with the garden hose and put it in his hand as he lay in bed then went out and turned the tap on.
From then on his early morning calls were always accompanied with a short length of garden hose being placed in his hand in bed, leaving him with the unknown question of whether the hose was the real or fake one.

  
One of the mine shift crew had three operators who worked and played together, they arrived on shiny trail bikes taking a shorter cross country environmental destroying route and gloatingly beating the others who used the conventional roads. After work their shortcut enabled them to be home and enjoying a beer five or ten minutes before the rest of the crew arrived. This ability somehow this gave them an air of smug superiority.
A little while later I notice I was regularly arriving home long before the three riders wing dinged their way noisily down the road and into camp via their well traveled cross country shortcut even though I left work a half an hour after their departure
The short cut bike trail and crop location.

Curious, one day I decided to walk their bike trail where I easily discovering their marijuana crop, hidden close by among a grove of Northern Cypress (Mowantjie Willauwar) and thus answering the question of their delay.

Management decided to simply keep an eye on them along with one or two others we knew also into quiet horticulture, the idea being it kept them occupied and out of trouble.
The employment dept simply listing their job prospects as never to be re-employed or promoted.

As the crops aged and developed, a tiny amount of Glyphosate was often quietly added to the plants water supply.


Friday, 8 December 2017

Story 27. Highway Slaughter.

Mt Gunson Cattle Grid Mine, sat across the boundary of two station properties.

To the east Pernatty Station.
To the west Oakden Hills Station.

Between Oakden Hills and Mt Gunson mine was the Stuart Highway, the National Highway that ran northward from Pt Augusta, Alice Springs and finally on to Darwin completely crossing the continent from north to south.

Almost opposite the Mt Gunson turn off is an area known as the Bellamy Hills, a sandy area with patches of dense scrub, low trees and a sizable dam water supply, an ideal place for cattle to roam.

Most of the properties along the Stuart Highway ran sheep and cattle and in the early 1980's before the highway was sealed and with only sparse traffic using the road very few sheep and cattle station properties bothered with boundary or highway fencing.

Very late one cold night with the temperature nearing zero, news came through a number of cattle had wandered onto the highway and been knocked over by a passing semi-trailer, the story told was there could be as many a five dead cows spread over the road.

The overseer, his wife and a roustabout headed off in the inky blackness to investigate, taking with them their butchering knives just in case there was a possibility of being able to restock the stations meat supply.

They arrived to find a number of dead cattle spread along a section of highway. these they cleared from the road and after surveying the carnage the group set about butchering the cattle using the vehicle head lights to see by as they skinned and cut the beasts into manageable size pieces, placing them on a growing pile on the back of the station's utility.

It was pitch black and freezing and well into the early morning hours as the small crew were finishing off, in the distance they could see the lights of the first vehicle to use the road in hours, approaching.

They could hear it slowing down as it neared, obviously alerted buy the headlights of their vehicle parked off to the side of the road, eventually pulling up and stopping next to the stations vehicle.
The station overseer walked out of the darkness and into the head lights as the drivers window wound down.
The driver his eyes springing wide open as he watched a tall stranger completely covered head to toe in fresh blood and carrying a very large bloodied knife in his hand, approach.
The engine suddenly revved loudly as the gears crunched and the wheels began to screech along the bitumen as the terrified driver took of in an almighty hurry.

Leaving the small group a little puzzled by his response as they listened to the car as it continued accelerating away from them for quite some time.



     


      

Thursday, 7 December 2017

Story 26. A close call in Clay.

West pit extension, EMECO. 1984

With the new owners of Mt Gunson came some additional equipment.

First were three well used CAT 770. 50ton Dump trucks, these were slightly larger than the CAT 769's we had.
One of the new trucks had an aluminum body with raised sides (hungry boards) making it unable to be loaded by the CAT 988b loaders even with their high lift extensions. 
Second was a CAT 992 Loader. to load the larger trucks, even this loader had difficulty reaching over the side of the aluminum body.

After making several requests to the work shop to have the additional extensions removed nothing happened.
After listening to the loader operator complain about them over several weeks and no action being taken, one night I removed the truck driver and climbed into the large loader and using the bucket knocked the bloody useless extensions off one side much to the delight of all concerned. Management didn't seem to notice.
During the first month of the new mine ownership the truck numbers increased from CSR' s 10 to 14 trucks, production quickly lifted, the price of copper doubled.
The new owners had given us just 9 months to extract the $14m worth of exposed copper a figure easily passed, management quickly decided on a second 9 month extension.

Frank, was the main 992 loader operator, although he was confident operating the large machine he lacked actual mining experience. We were opening up a new area to the North Western end of the pit, in preparation to strip the overburden during the second 9 month extension.

The big loader and the larger trucks were tasked with the removal of a 5 meter thick layer of clay cover.

I dropped in to inspect the progress and noticed Frank was cutting the clay face, leaving an impressive vertical face, plus parking the dump trucks parallel to the face while loading.

Standing on top of the exposed clay only a meter or so above the loader I waited for him to finish loading then indicated I wanted to have a word with him.
He stepped out and I informed him this type of clay would not stand up as a vertical face and I didn't want the trucks or the operators to be parked anywhere near the cut face, as it was prone to collapse without warning.

Frank heeding my advice agreed to change his operating method.

As he climbed back into the loader I walked away and had gone less than four steps when behind me there was a Whoomp. as a twenty meter length of the clay face fell away.

Returning to the edge I discovered Frank sitting in the loader all the windows smashed and buried up to his waist in the loose clay.

He looked up at me and said, yeah, I know, you told me so.

  
      

Story 25. Colour Blindness

Night shift.
South Australia: Mt. Gunson Mine.


During the winter months the temperatures at night often dropped well below zero, minus 8 the coldest recorded during my time on site by the thermometer that hung on the wall just outside the mine office for many years as the warm sandy soils quickly gave up their heat during the night.

While progressing through the management levels John Holcroft was the shift supervisor and for a while I performed the lesser role as his assistant.

John was colour blind in the extreme which also included to some degree night blindness, often when describing something to do with colour I would often be looking for a green something when all I could see was yellow.
John was also an amateur herpetologist, an ideal pursuit in a land full of reptiles many of which had the capability of killing a grown man in twenty minutes. 

While driving along the haul road John would often shout for me to stop. Then race from the vehicle to a blue salt bush off in the immediate area plunge his hand into a bush and pull out a highly venomous snake which to me had the same identical colouring to the surroundings.

The latest capture was quickly placed inside a small calico bag and tied securely for later study.
After recording details in a huge book he carried about, its weight, length, number of scales, type, and colouring which I would often be brought in to correct his interpretation it would then be released back into the wild close to where it was found.

Puzzled as to how he could see something so well camouflaged from quite impressive distances he would inform me the snake was quite a reddish to lite brown in colour hiding in a blue bush.

Often when seated opposite his desk it would take a little time to realise we were also accompanied by a snake or two coiled up on the desk as well, John was also in the habit of picking up dead snakes during his travels to add to his book of records.

I was often the victim who sat though one of his lectures on the variations in the local Western Brown snake something that was quite venomous, though it took just a little longer to kill you than the Inland Taipan which also frequented the area and one of the most deadly in the world.

John often pointed out the Western Brown also came in black, brown with black stripes and what was often called the five ring snake which could also have more than five rings, he also found a specimen that was closer to a creamy white colour.


John was often asked by the Adelaide University Herpetology dept to supply unusual or interesting samples.
During one of our sudden stops he discovered an unusual snake, one he had never seen before and sent many photographs to Adelaide Uni who also became excited by the find.
John sent the snake to Adelaide to have it identified and catalogued.
Later when inquiring about it's return he was informed the snake had been dissected, he stopped sending live specimens.

During dark rainy nights while making our rounds I was often asked to stop, and get out in the rain to collect frogs we had caught in the headlights of the vehicle, These were needed to feed Boris, his ill tempered 3 or 4 meter children's python.

A wild life television program contacted him one day in the 1980's to supply a snake for a show they wanted to film in and around Woomera. John had an excellent example of the required snake on hand so he agreed to take part.

 On the day of filming the snake, a Western Brown was placed in a foam box with ice to cool it down a little to make it docile for the well known wild life presenter to easily handle.

Showing up on the film site with the snake, John discovered the producers had chain-sawed a hole in the back of a large Myall tree opposite a large knot hole, the idea was for John to lay in a shallow pit behind the tree, suitably covered and camouflaged so when the presenter poked his hand in through the hole, John was to place the lethargic lethal snake in his hand so it would appear he had drag it out of the knot hole, he would then go on to inform the viewers of the details of this species of snake.

John, seeing what they had done to a very slow growing 250 year old tree, which, to a casual observer, looked like a rather unspectacular looking tree, they had effectively killed it, he was furious and refused to take part in the filming, informing them the tree had been growing in that location long before Captain Cook had discovered Australia.


Tourists.

Often a tourist vehicle would pull up in front of the mine office. Most times these were sent by the Woomera Police after the occupants had reported a snake had climbed into the vehicle while camping several days before. The occupants would climb out of the car wearing every garment they had with them as padded protection should the snake attempt to bite them. Often this was how people arrived on site in 40c (103f) degree temperatures.

John would boldly open the car and begin unloading their possessions one piece at a time, opening, unfolding, lifting, shaking in search of the wayward reptile, if nothing found he would then venture into and under side of the vehicles fittings, flaps and substructure until it was either found or he was satisfied none existed.
Any discoveries were bagged tied, measured, recorded, and identified before being released back to the wild.



     

Friday, 1 December 2017

Story 24. War of the Dozers.

CAT D9L

 




Komtsu Dozer.


Shortly after EMECO took over Mt Gunson Mine from CSR in 1984 a well used Komatsu D4 size Dozer appeared on site.

Compared to the two much larger D9 Dozers we used on site in the mine, the tired little Komatsu was less than one quarter of their size and was simply too small to be of any use to the mining operation, we attempted to use it to push off the tip heads, but with dump trucks arriving every minute to deposit another 50 ton of overburden the tiny machine quickly became completely overwhelmed by the task plus it was in constant danger of being run over by even the smallest of equipment on site. The other problem was the tracks would often fall off usually in a most inappropriate location, or when reversing the blade side arms would sometimes become unattached and the blade would be dragged along by the hydraulic lift cylinders.

Originally the Dozer was proposed for use in the mill, management hoping its size would make it handy to assist with clean ups and getting in and among the various crushers, conveyors, or pushing in the feed at the main surge pile when the feed cone became to low. After trials in the mill it was found the task of pushing in feed could be performed much quicker and easier by one of the many 988B front end loaders we previously used.

The little dozer sat unused, in a quiet corner of the mill.

A problem arose when it was discovered who ever had this Dozer in their possession, was though the complexities of the P&L (Profit & Loss) accounting paper work being charged for its hire and use whether in use or not, (I suspect this Dozer was owned by one of the company directors and simply put out on site to appear as a hire and used to supplement his/her income ).

The Mill decided in an effort to eliminate the unwarranted cost, to secretly walk the machine 3km and hide somewhere it in an unfrequented part of the mine area.

The mine upon discovery of the diminutive tracks would easily locate its hiding spot and having no use for the Toy Dozer loaded it into the back of one of the dump trucks and driven back to the Mill where it was simply tipped onto the surge pile.
And so started a sort of to and fro war between the Mill and the Mine, where the unwanted Dozer made numerous trips up and down the haul road as each department fought to retain non possession .

Occasionally if the dump truck operator was engaged in carting ore to the mill and given the task of returning the Dozer, it was often accidentally tipped off into the actual primary crusher, when the driver simply forgot about the change of load. By the time the sound of screeching metal on metal as the tracks slid along the tray while exiting the truck was heard, it was far too late for the truck driver to stop the inevitable.

After returning the Dozer and depositing it onto the bottom of the surge pile late one evening, the Dozer war came to a quiet end, at least for three or four weeks.

While trying to reconcile his books at the end of the month the accountant noticed neither the Mine or Mill had included the tiny Dozer in their monthly figures, each department claimed not to have used or be in possession of the machine  and both claiming not to have seen or used it for over a month.

I was sent out to search the entire mine site and find the missing machine, management fearing it may have been stolen from site

After an entire day of following very old tracks and looking in places it was last reported the trail seem to have gone cold.

Searching through the service records I discovered the last sighting report was from the serviceman who had refueled it as part of his normal daily service of all equipment on site, and had listed it as being located in the Mill.

After spending a few hours on a 988 loader moving part of the huge surge pile I uncovered the dozer having spent the month completely buried under several thousand tons of crushed rock.

The Dozer then spent the next several weeks tagged out of service and parked out of the way near the workshop, conveniently forgotten, while waiting to be inspected for damage before being returned to service.

Story 23. Bangalore Torpedo's & Surge Bins

Warren Brown was the mine manager during CSR's ownership of Mt Gunson Mine, he encouraged employees to learn new kills and take on the occasional challenge.
This approach encouraged knowledge, experience and occasionally something a little unexpected,

After one of the overburden shots had been cleared and all the material had been dug out and after the area had been cleaned up it was noticed a large 500+ton rock hangup had occurred on the back wall of the overburden shot. This was a section of rock that had been included in the shot but for some reason the explosive had failed to move it so it hung as a large bulge of rock 15mtr long and four meters high and about a meter and a half thick, attached to the face, there were several original drill holes still visible passing completely through the back of the hang up, all empty and spaced 2.5 mtrs apart.
One of our training shot firers was given the task of calculating the required amount of explosive to enable this problem to be cut from the wall without damaging the wall face behind it.
The rock type known as Whyalla sandstone consisted of a mix of layers with numerous fault lines and variations in the actual hardness of the rock itself, this was a very difficult material to blast correctly and if not enough care was taken when loading the explosives, it would reward the shot firer by producing large 5, 10, or 15+ ton boulders with ease, making it difficult for the Front End Loaders to shift move or pick up and place into the back of the Dump trucks.

After careful calculations the suggested amount of explosive was loaded into a series of Bangalor torpedoes. A Bangalor torpedo is an explosive charge placed within one or several connected tubes, Originally used by combat engineers to clear obstacles that would otherwise require them to approach directly, possibly under fire. It is sometimes colloquially referred to as a "Bangalore mine", "banger" or simply "Bangalore" (wikipedia)

In this instance the explosive was placed in several lengths of 75mm PVC pipe. This allowed the explosive to be slid down into the existing holes which were open top and bottom.

The explosive in the form of a packaged sausage was tied with down line and after measuring the position with the aid of a tape measure lowered over the side of the face which then produced the measurement to lower the sausages down inside the PVC pipe to the required depth.
After tying the down lines together and clearing the pit, the time came to fire the charge, with the ultimate aim to sheer off in a clean cut and leave the face clear of the dangerous 500ton rocky hangup.

Warren Brown and a small group stood well clear on top of the pit watching as the charge was detonated.
A flash of det cord a milli second or two later the Bangalor Torpedo's all detonated sending rock and dust up and down the face behind the hangup, the sharp crack of the explosive reaching us a few seconds later.
As the dust cleared it became apparent the hangup had not shifted at all.
We waited, a minute and it became apparent nothing was going to happen.

Warren turned to the disappointed shot firer and began to explain that often even after doing all the calculations and planning it is always better to slightly overcharge the holes with explosive.
He then began a lecture on calculations for mass and quantities of explosive, when the overhang suddenly and quietly slid down the wall as one complete piece before noisily shattered into small pieces as it hit the floor ten meters below leaving behind a perfectly clean face looking as though it had been cut from the face with a knife while leaving half the drill hole still visible in the remaining face, making it a perfect result.

Warren shut up for a moment watching as the scene unfolded before him, Then, he went on,  there is beginners luck to consider, he said finally.


Mt Gunson Mill stock pile and round Surge bin(silo)
The Surge bin

At start of the feed conveyor in the Ball Mill stood a surge bin, this was a tall silo like structure that stood twenty meters tall and about six in diameter, the top was capped with a conical shape roof of corrugated iron to help keep the crushed ore dry.
It's purpose was to collect the final crushed rock, the fines and feed it onto the feed conveyor at a rate to maintain the constant flow of feed into the Ball mill where it would be ground down to a fine slurry to enable the copper and other minerals to be separated from the waste rock.


Occasionally the contents would hang up inside the bin, a series of compressed air jets fitted at various levels and locations about the circumference of the bin could be activated to blast the material loose.
Sometimes the air was unable to shift this material, when this happened the internal volume of the surge bin was reduced making it difficult to maintain a constant feed flow.
The solution was to lower a shot firer in through the top of the bin on a bosuns chair with an auger where he would drill a series of holes all around and at different levels through out the hang up material and cut a 20 or 30 mm slice from one or two plugs of the sausage explosive and insert it into the augured holes taking care not to over prime the entire bin with explosives. The object was to shake and loosen the hang up.
After one Christmas I was returning to the mine after having a week off to discover the entire roof of of the surge bin completely missing.

One of our ex army shot firers who had been staying on site over the Christmas break had been asked if he could give the bin a bit of a shake up. Miss-understanding the instruction of using only 20 to 30mm slices of the 70mm sausage explosive he took it to mean 20 to 30% of the explosive in each hole. The result of the using five plugs of explosive in an overcharge quickly removed the entire roof in a spectacular fashion sending it flying hundreds of meters into the air where it rained sheets of twisted corrugated iron down all over the mill area.

Oh well,

Wednesday, 29 November 2017

Story 22. Security Pass....Please!

The town of Woomera sits about 30km north of My Gunson, a bitumen section of road extended for about 35km south of Woomera, this was, I had been informed laid down in case an important visiting dignitary decide to go for a drive from Woomera.

The end of this paved section the road ended abruptly where it continued like an unmade bed full of tyre eating, potholes as the National Highway continued bone jarringly south for over 100km to where it joined up with the civilised section of the National Highway just a few km out from Port Augusta.

Up to the mid 80's Woomera was a closed town, any visitor wishing to visit the town was required to stop at a road block guard house and enter the building to fill in a visitors form, this included, name and address drivers license along with time of arrival, intention of the visit, names of anyone you intend to visit while in town and the time of your departure. (Note: Not this is not an estimated time of departure).
Woomera was home to 2000 American Airforce personnel who talked and listened to satellites they drove about in space from a secret base just a little way to the south on the shore of Island Lagoon.

Woomera also housed a number of personnel from the Australian Airforce and a contingent of boffins from the Australian Weapons Research Establishment who played about with stuff no one was suppose to know about. Occasionally the odd smoke trail shot skyward at one hell of  rate, letting off coloured explosives along the way or the occasional appearance of weird flying machines that spluttered about, sometimes a Mirage jet or two were spotted racing over the nearby flat salt pans letting loose some new type of ordinance that occasionally identified one of the concrete filled army tanks out on the lake as either a national threat or simply something that got in the way of it's ground skimming capability.

As a gliding instructor I knew a few of the glider pilots from the Woomera Gliding club having had a hand in their initial training at the Waikerie Gliding club. Also having been one of the training instructors I had also had a hand in the training of their flying instructors.
I sometimes visited the club simply as a means of getting away from the mine site for a while.
The club had two gliders an old but very well kept K-13 two seater and a KA-6 both kept in a far corner of an enormous locked hangar. Often when retrieving these aircraft other military aircraft would be discovered quietly parked in another corner of this enormous building which took a good fifteen to twenty minutes to unlock, walk the length of the hangar, retrieve the gliders, exit and re-secure and lock the doors while pretending to ignore the other aircraft with their load of weaponry and coloured painted bands in place didn't exist.
A few of the US airforce personnel joined the club and learn't to fly gliders while stationed in Woomera.

One morning I was assisting with the instructing when a short gentleman with a severe crew cut approached, his presence producing an instant response from the other Americans. As they stood to attention and acknowledge his presence.
Walking up to me he reminded me of an Ernest K Gann character out of the book, "Fate is the Hunter" and announced, I am Colonel Pepper and I would like to learn to fly.
The thought of teaching an American Airforce Colonel to fly  struck me as a little odd, then he went on to inform me not all Airforce personnel fly airplanes, I fly satellites.




A local plumber was doing a job in the nearby town of Pimba just 6km south of Woomera.
For almost a week he had been going back and forth several time during the day stopping at the guard house each time to show his pass, and sign the book, even though the guard knew him quite well as a local.
In a bit of a rush and having passed through the gate three or four time during the day, the plumber slowed and waved to the guard as he continued on his way.
Retrieving his weapon from inside the door the guard shot out a rear tyre of the plumbers vehicle effectively bringing it to a halt, he then walked to where the shocked plumber had come to a halt only a few meters past the gate.
Peering in at the plumber the guard said, "You forgot to show your security pass and sign the book". 



Story 21. The Fuel Truck

With a 24hr operation all machines were required to stop at sometime during the shift for refueling.
For the CAT 769 dump trucks it was easy, the serviceman would wait at the fuel pump reading a  copy of a Mills and Boom book and after the crew had their meal break he simply refuel each machine as they left the park area on their return into the pit.

The CAT988 loaders were refueled earlier in the pit during a ten minute crib break when the crews would grab a cup of coffee, cake or biscuits while the loader took on fuel and the pit fitter had a quick look over the machine.
The other machinery could be stopped at anytime with out disrupting production.

Also in the pit were two sometimes three large 14inch warman pumps powered by a 3208 Cat these pumps kept the water levels down and pumped the seeping water 140 feet up and out of the pit where it could be used in the mill or stored in any of the many dams.

With as many as three Loaders operating and fourteen dump trucks available the service truck visited each in turn.

One night shift while refuelling one of the pumps the service truck became semi-bogged in one of the sumps, truck tyres on the wet rock often made traction difficult.
Out service man discovered he could move a little both forward and back but was having great difficulty climbing over a small rise.
Frustrated he began going back a little further each time in an effort to increase the run up hoping the extra speed and momentum would help him make it up and over the small rise.
A large rock was preventing him from being able to go back any further, each time he reversed he did so until his progress was physically stopped by the rock as the back of the truck struck it each time bringing the truck to a sudden halt.
Frustrated at being stuck his reversing became more determined as the truck was brought to a sudden halt each time as it struck the large rock.

Seeing his plight the grader operator picked up a large heavy steel cable we used to pull the dump trucks out of  bogs, soft ground, and occasionally from over the edge of the dump when a dump truck had reversed a little too far and became stuck a little way down the slope.

Arriving he  found a highly agitated and certainly frustrated serviceman. They hooked the rope on and after a few minutes managed to drag the service truck free, much to the delight of the busy serviceman.

A quick inspection of the truck found by using the large rock as a back stop to bounce off in the search of added momentum the service man had shortened the trucks chassis by almost three feet!!


Close to the fuel pump stood a raised cleaning station, this was a small platform about three meters above the ground and positioned at the same height as the Dump truck's walkway. Behind was a raised water tank with clean water, this enabled the truck drivers to step out and clean the windows without having to climb up the truck carrying a heavy bucket of water to clean windows or wash out the often dusty interior of the cabin of the dump truck.

During one night shift a truck driver miss judged the platform and failed to stop the truck in time, knocking over the stand and with it went the 10,000 gal water tank.

This crew were from that moment on forever known as "F troop" from the popular TV show of the same name, which in the opening credits showed as similar water tank being knocked over.




and  

Tuesday, 28 November 2017

Story 20. Night Shift Can be Scary.

One of the most dangerous work practices especially in mining is shift work.
Night shift is easily the highest risk period of any workforce.

In CSR's time Mt Gunson worked three, eight hour shifts, night shift began at 11pm and ended at 7am.
Anyone who has ever worked a night shift will be aware the 3am to 5am period is the most dangerous time to work, it's also during this period the mind simply craves sleep. This is a problem experienced by every operator involved in the operation of heavy equipment.

The CSR mine management in the 1970-80's were stubbornly opposed to any equipment being fitted with a basic am/fm radio, "it would distract them" was one reason given, any suggestion of a two way radio being included in any of the equipment to enhance site communication was met with, "they will be playing with the darn thing all night and not concentrating on the job at hand".

There was little to nil understanding of basic fatigue management in the 1970-80 or the fatigue problems associated with a three eight hour shift roster in a camp environment.

A night shift worker ending his shift at 7am would shower and have breakfast, by the time they had completed a few domestic tasks or spent an hour or two socialising and relaxing before heading off to bed it would be around 10 - 10:30 am,  similar to a normal day experienced by permanent  day workers only it was time shifted 12 hours.

At at 3pm the afternoon shift crew would begin to prepare for their shift, clunking about in heavy work boots and generally raising the noise level in camp for an hour before heading off to work. Then shortly after 4pm the day shift would knock off and arrive back in camp, banging and crashing as they headed to the showers or the bar then sat about camp talking noisily and socialising.

Had a permanent day shift worker (or management) regularly experienced being woken every day at 3am and again at 4am the problem of sleep and fatigue would have been understood by management, but unfortunately this never happened.

Years later I was placed in charge of a large mine in Western Australia where administration management insisted on having a compulsory staff meeting every day at 2pm. when asked why not later at a more convenient time for night shift who after knocking off as 6 am having breakfast and got to bed by 9am were then required to get up at 1:30pm to attend the meeting which ended at 3pm. Night shift normally rose at 5pm to start their 12hr shift at 6pm as a result of this the night shift supervisors were getting only 4 hours sleep each day.
I was informed by the administrators the meeting time was based on the majority of attendees at work at that time, so it was easier for everyone.
The real reason behind the time chosen was the administration staff knocked off at 3pm and it suited them perfectly.
After senior management left me in charge for two weeks, I did a head count at the first meeting I chaired and found the night shift supervisors made up most of the attendees.
Using the understood rules I informed every one at the meeting for the next week all compulsory staff meetings would be conducted at 2am.

By day two every one had a working understanding of the problems they were imposing on night shift, by the end of the week compulsory staff meetings were agreed to be conducted at a more convenient time.

Mt Gunson mine worked an eleven day week, then shut down for three days.
 Almost all the workers left site and went home for the three days.

The last shift was night shift which ended at 6am, knowing everyone would be in a rush to leave site I would spend an hour filling in everyone's time sheets leaving only the load count, and a signature needed to complete the paperwork as they made their way through the office.

I would knock off a half hour behind the crew after dropping off the maintenance forms and paperwork at the main administration office.

While driving south after one night shift, I was about 50km south of the mine when I noticed one of the operators vehicle stopped on the side of the road and parked in an odd sort of way with the front wheels against a small windrow. I stopped and walked over to see if the driver was in trouble and needed help.
As I approached I noticed he was sound asleep at the wheel, the engine still running and the automatic transmission still in gear. Obviously he had fallen asleep and the car had simply continued on its own for a while, his foot had dropped off the accelerator, allowing the vehicle to slow down then eventually run off the long lonely stretch of road where it was slowed further by the soft dirt and eventually come up against the windrow and been brought to a complete stop.

I reached through the open window and moved the transmission to the park position.
Then I lay on the engine bonnet and looking in through the front window knocked loudly on the windscreen.
The driver stirred, then suddenly realising he was driving grabbed the steering wheel.
At the same time I screamed at him, he screamed back at the sudden appearance of the terrified face looking at him through the cars window while trying to swerve left and right as he attempted to bring the already stationary vehicle to a complete halt.
I climbed off the front and peered in.
Are you awake Harry? I asked.
Where in the blood hell did you come from? he said appearing unsure of what just happened and my sudden, unexpected appearance while he thought he was still driving.
I left site a half an hour after everyone left, I explained.
Oh shit I must have fallen asleep. he said, I'm wide awake now.
He looked it. Good, now Ill follow you into Pt Augusta and we will stop for a coffee, I said.
And a change of underwear, Harry added.

Sunday, 26 November 2017

Story 19. That's My Bloody Ore Body.


The years 1980 to 1984 South Australia was in the grips of a drought, the normal 200mm (4inch) of rain fall a year failed to arrive four years in a row in an area with an evaporation rate of 3.5metres (11 1/2 feet) a year.

By Christmas 1984 all the grass in the area had long gone exposing the red sand, sheep had trimmed the underside of all the trees the lowest branches had been raised almost two meters, sheep stations had sold off their stock, rabbits were seen climbing trees to just find something to eat.

In certain areas it was possible to sit on the ground and see for miles under the raised skirts of the trees where the undergrowth had vanished.
Thousands of kangaroos moved into Woomera every night to graze on the town lawns and ovals or anything that resembled an edible green.

For months a drilling company we had often used had been conducting exploration drilling through the Woomera restricted zone for another company and were nearing the last two holes of the exploration line. With only two weeks before Christmas they had been hoping to be able to finish the contract before Christmas rather than have to return to complete just two or three after the holidays.

With nothing of interest to show for months of work the client had indicated they were loosing interest and would be agreeable if the driller wanted to abandon the last two holes and return home for Christmas, ending the exploration program slightly early.

With two holes to go rain began to fall in the area for the first time in four years.
By morning all the tracks in the area were impassable to all but 4WD vehicles, no way the heavy drilling rig would be able to go anywhere for a few days.
Facing the fact they were rained in, it was decided to drill the remaining holes while waiting for the tracks to dry out.

Parked near a small dam they completed the drilling and with only a day before Christmas they packed up and began the slow journey south.

With the truck and vehicles covered in the sticky red mud they decided to pull into Mt Gunson for a few hours to wash for the first time in months and blast the sticky mud off the vehicles for the long trip south.
Being ever curious as to what the drillers were up to Allen Turnbull stopped by.

The driller complained the last two holes took much longer to drill because of the nature of the rock he showed Allen the retrieved sample of rock.

Allens eyes lit up as he inspected the sample.
Hard rock be buggered he said, "That's my missing bloody ore body he said.
Where did this come from? he asked.

The driller thought for a moment then informed Allen about 100km north of Woomera, near a small dam, retrieving the exploration map where after a few moments identified the location, pointed out the small insignificant dam, the map identified as, Olympic Dam.

 

  


  

Geoff.

Windoze ME Hi team I hope to eventually introduce new pages to the Blog.     On Aviation. Flying, Gliding and the other forms. 1971...