Date: 24/08/2018 09:33:40
From: mollwollfumble
ID: 1266646
Subject: Gold mining?
Back in 1974, the Club of Rome predicted that the world’s supply of gold would run out in the year 1983-1985.
You can see why in this graph from wikipedia. If the precipitous decrease in gold production between 1970 and 1974 in South Africa is projected forwards then it does indeed took like it could hit zero in 1985.
What interests me is the massive jump in gold production in USA, Australia and Russia between 1980 and 1990. Gold tends to occur in thin layers (alluvial gold) or quartz veins of order 150 mm across. Such sources are rapidly worked out in a couple of years. What has been the improvement in technology that allowed the jump in gold production between 1980 and 1990?
Date: 24/08/2018 10:03:33
From: Michael V
ID: 1266654
Subject: re: Gold mining?
mollwollfumble said:
Back in 1974, the Club of Rome predicted that the world’s supply of gold would run out in the year 1983-1985.
You can see why in this graph from wikipedia. If the precipitous decrease in gold production between 1970 and 1974 in South Africa is projected forwards then it does indeed took like it could hit zero in 1985.
What interests me is the massive jump in gold production in USA, Australia and Russia between 1980 and 1990. Gold tends to occur in thin layers (alluvial gold) or quartz veins of order 150 mm across. Such sources are rapidly worked out in a couple of years. What has been the improvement in technology that allowed the jump in gold production between 1980 and 1990?
Please note that mineable vein gold is not restricted to 150 mm quartz veins. Most veins are much, much wider. It takes grade and tons to make an economic mine. Mines with a long life have both.
The main changes:
1. Understanding of epithermal deposits, especially the large tonnage, low grade, low-sulphidation epithermal systems.
2. Understanding of the link between epithermal gold and porphyry copper systems, leading to the understanding that porphyry copper deposits may (and often do) contain significant gold.
3. Discoveries in the Tanami Desert (a geographically isolated area). One Tanami Desert mine in particular (Callie) supplied a significant proportion of the world’s gold for many years.
4. Incremental improvements in ore milling and other metallurgical processes.
Date: 24/08/2018 10:04:19
From: The Rev Dodgson
ID: 1266655
Subject: re: Gold mining?
mollwollfumble said:
Back in 1974, the Club of Rome predicted that the world’s supply of gold would run out in the year 1983-1985.
You can see why in this graph from wikipedia. If the precipitous decrease in gold production between 1970 and 1974 in South Africa is projected forwards then it does indeed took like it could hit zero in 1985.
What interests me is the massive jump in gold production in USA, Australia and Russia between 1980 and 1990. Gold tends to occur in thin layers (alluvial gold) or quartz veins of order 150 mm across. Such sources are rapidly worked out in a couple of years. What has been the improvement in technology that allowed the jump in gold production between 1980 and 1990?
https://upload.wikimedia.org/wikipedia/commons/thumb/e/e2/Top_5_Gold_Producers.png/1280px-Top_5_Gold_Producers.png!
Big excavators and dump trucks?
Date: 24/08/2018 10:06:19
From: The Rev Dodgson
ID: 1266656
Subject: re: Gold mining?
Michael V said:
mollwollfumble said:
Back in 1974, the Club of Rome predicted that the world’s supply of gold would run out in the year 1983-1985.
You can see why in this graph from wikipedia. If the precipitous decrease in gold production between 1970 and 1974 in South Africa is projected forwards then it does indeed took like it could hit zero in 1985.
What interests me is the massive jump in gold production in USA, Australia and Russia between 1980 and 1990. Gold tends to occur in thin layers (alluvial gold) or quartz veins of order 150 mm across. Such sources are rapidly worked out in a couple of years. What has been the improvement in technology that allowed the jump in gold production between 1980 and 1990?
https://upload.wikimedia.org/wikipedia/commons/thumb/e/e2/Top_5_Gold_Producers.png/1280px-Top_5_Gold_Producers.png!
Please note that mineable vein gold is not restricted to 150 mm quartz veins. Most veins are much, much wider. It takes grade and tons to make an economic mine. Mines with a long life have both.
The main changes:
1. Understanding of epithermal deposits, especially the large tonnage, low grade, low-sulphidation epithermal systems.
2. Understanding of the link between epithermal gold and porphyry copper systems, leading to the understanding that porphyry copper deposits may (and often do) contain significant gold.
3. Discoveries in the Tanami Desert (a geographically isolated area). One Tanami Desert mine in particular (Callie) supplied a significant proportion of the world’s gold for many years.
4. Incremental improvements in ore milling and other metallurgical processes.
Pick the geologist and the civil engineer :)
Date: 24/08/2018 10:09:47
From: Cymek
ID: 1266657
Subject: re: Gold mining?
The Rev Dodgson said:
mollwollfumble said:
Back in 1974, the Club of Rome predicted that the world’s supply of gold would run out in the year 1983-1985.
You can see why in this graph from wikipedia. If the precipitous decrease in gold production between 1970 and 1974 in South Africa is projected forwards then it does indeed took like it could hit zero in 1985.
What interests me is the massive jump in gold production in USA, Australia and Russia between 1980 and 1990. Gold tends to occur in thin layers (alluvial gold) or quartz veins of order 150 mm across. Such sources are rapidly worked out in a couple of years. What has been the improvement in technology that allowed the jump in gold production between 1980 and 1990?
https://upload.wikimedia.org/wikipedia/commons/thumb/e/e2/Top_5_Gold_Producers.png/1280px-Top_5_Gold_Producers.png!
Big excavators and dump trucks?
Yes I wondered about that myself, mining on a much larger scale equals more gold
Date: 24/08/2018 10:13:27
From: Michael V
ID: 1266659
Subject: re: Gold mining?
The Rev Dodgson said:
Michael V said:
mollwollfumble said:
Back in 1974, the Club of Rome predicted that the world’s supply of gold would run out in the year 1983-1985.
You can see why in this graph from wikipedia. If the precipitous decrease in gold production between 1970 and 1974 in South Africa is projected forwards then it does indeed took like it could hit zero in 1985.
What interests me is the massive jump in gold production in USA, Australia and Russia between 1980 and 1990. Gold tends to occur in thin layers (alluvial gold) or quartz veins of order 150 mm across. Such sources are rapidly worked out in a couple of years. What has been the improvement in technology that allowed the jump in gold production between 1980 and 1990?
https://upload.wikimedia.org/wikipedia/commons/thumb/e/e2/Top_5_Gold_Producers.png/1280px-Top_5_Gold_Producers.png!
Please note that mineable vein gold is not restricted to 150 mm quartz veins. Most veins are much, much wider. It takes grade and tons to make an economic mine. Mines with a long life have both.
The main changes:
1. Understanding of epithermal deposits, especially the large tonnage, low grade, low-sulphidation epithermal systems.
2. Understanding of the link between epithermal gold and porphyry copper systems, leading to the understanding that porphyry copper deposits may (and often do) contain significant gold.
3. Discoveries in the Tanami Desert (a geographically isolated area). One Tanami Desert mine in particular (Callie) supplied a significant proportion of the world’s gold for many years.
4. Incremental improvements in ore milling and other metallurgical processes.
Pick the geologist and the civil engineer :)
Heh!
To be fair to engineers, there has definitely been significant improvements in ore and waste handling – particularly size of the handling gear. Underground has gone from railed push-carts to electric trains to diesel haulpacks. The size of haulpacks used in surface mines has increased enormously in the last 40 years.
Date: 24/08/2018 10:31:28
From: Michael V
ID: 1266661
Subject: re: Gold mining?
The Rev Dodgson said:
mollwollfumble said:
Back in 1974, the Club of Rome predicted that the world’s supply of gold would run out in the year 1983-1985.
You can see why in this graph from wikipedia. If the precipitous decrease in gold production between 1970 and 1974 in South Africa is projected forwards then it does indeed took like it could hit zero in 1985.
What interests me is the massive jump in gold production in USA, Australia and Russia between 1980 and 1990. Gold tends to occur in thin layers (alluvial gold) or quartz veins of order 150 mm across. Such sources are rapidly worked out in a couple of years. What has been the improvement in technology that allowed the jump in gold production between 1980 and 1990?
https://upload.wikimedia.org/wikipedia/commons/thumb/e/e2/Top_5_Gold_Producers.png/1280px-Top_5_Gold_Producers.png!
Big excavators and dump trucks?
Yes. Incremental size growth in ore, waste and mill handling systems has also been very important.
Date: 24/08/2018 10:41:54
From: Cymek
ID: 1266662
Subject: re: Gold mining?
I imagine bling demand by rappers and hip hop artists has meant they had to scale up gold mining to keep up the supply.
Date: 24/08/2018 10:43:20
From: party_pants
ID: 1266663
Subject: re: Gold mining?
There’s got to be more to it than just digging out thin layers or veins of gold. This is a picture of a working gold mine near Kalgoorlie from my archives. They are digging out the whole ore body. Some of it just gets dumped on the ROM heap, the rest of it with any hint of a speck of gold per tonne get processed, The dot you can see at the bottom of the mine is an enormous excavator.
Date: 24/08/2018 10:46:30
From: Michael V
ID: 1266665
Subject: re: Gold mining?
Cymek said:
I imagine bling demand by rappers and hip hop artists has meant they had to scale up gold mining to keep up the supply.
Gold is used in electronics quite a bit, and is therefore thrown away more now than any other time in history.
Date: 24/08/2018 10:50:29
From: Woodie
ID: 1266666
Subject: re: Gold mining?
party_pants said:
There’s got to be more to it than just digging out thin layers or veins of gold. This is a picture of a working gold mine near Kalgoorlie from my archives. They are digging out the whole ore body. Some of it just gets dumped on the ROM heap, the rest of it with any hint of a speck of gold per tonne get processed, The dot you can see at the bottom of the mine is an enormous excavator.
Tis but a scratch.
Date: 24/08/2018 10:51:18
From: captain_spalding
ID: 1266668
Subject: re: Gold mining?
Woodie said:
party_pants said:
There’s got to be more to it than just digging out thin layers or veins of gold. This is a picture of a working gold mine near Kalgoorlie from my archives. They are digging out the whole ore body. Some of it just gets dumped on the ROM heap, the rest of it with any hint of a speck of gold per tonne get processed, The dot you can see at the bottom of the mine is an enormous excavator.
Tis but a scratch.
No, ‘tis not so deep as a well nor so wide as a church-door, but ‘tis enough, ‘twill serve.
Date: 24/08/2018 10:59:49
From: Cymek
ID: 1266671
Subject: re: Gold mining?
Michael V said:
Cymek said:
I imagine bling demand by rappers and hip hop artists has meant they had to scale up gold mining to keep up the supply.
Gold is used in electronics quite a bit, and is therefore thrown away more now than any other time in history.
Yes I just find it amusing that so much effort goes into acquiring it for personal ornamentation
Date: 24/08/2018 11:03:17
From: party_pants
ID: 1266672
Subject: re: Gold mining?
Cymek said:
Michael V said:
Cymek said:
I imagine bling demand by rappers and hip hop artists has meant they had to scale up gold mining to keep up the supply.
Gold is used in electronics quite a bit, and is therefore thrown away more now than any other time in history.
Yes I just find it amusing that so much effort goes into acquiring it for personal ornamentation
Massive demand for it in India too, as a display of wealth. They have a billion people.
Date: 24/08/2018 12:35:02
From: roughbarked
ID: 1266730
Subject: re: Gold mining?
Woodie said:
party_pants said:
There’s got to be more to it than just digging out thin layers or veins of gold. This is a picture of a working gold mine near Kalgoorlie from my archives. They are digging out the whole ore body. Some of it just gets dumped on the ROM heap, the rest of it with any hint of a speck of gold per tonne get processed, The dot you can see at the bottom of the mine is an enormous excavator.
Tis but a scratch.
Yes but few places in the world had such rich ground. There are very few places where gold is found in enough quantity to make it worth digging such a scratch.
Date: 25/08/2018 18:04:16
From: dv
ID: 1267425
Subject: re: Gold mining?
Global gold production (also from Wikipedia based on USGS data)
Date: 25/08/2018 18:59:56
From: mollwollfumble
ID: 1267474
Subject: re: Gold mining?
Michael V said:
Please note that mineable vein gold is not restricted to 150 mm quartz veins. Most veins are much, much wider. It takes grade and tons to make an economic mine. Mines with a long life have both.
The main changes:
1. Understanding of epithermal deposits, especially the large tonnage, low grade, low-sulphidation epithermal systems.
2. Understanding of the link between epithermal gold and porphyry copper systems, leading to the understanding that porphyry copper deposits may (and often do) contain significant gold.
3. Discoveries in the Tanami Desert (a geographically isolated area). One Tanami Desert mine in particular (Callie) supplied a significant proportion of the world’s gold for many years.
4. Incremental improvements in ore milling and other metallurgical processes.
“Epithermal” is a word I’ve only known from nuclear reactor physics. Epithermal neutrons have an energy between fast neutrons and thermal neutrons.
There are mentions of copper together with gold in 1931, but back then it was far more common to find gold alone, or with ironstone, arsenic or antimony. One indicator rock mentioned back then for gold is a black-green colour, which could be copper?
“The Grasberg mine is the largest gold mine and the second largest copper mine in the world. It is located in the province of Papua in Indonesia near Puncak Jaya, the highest mountain in Papua.”
“Incremental improvements”, I’ll look it up. Telfer mine may publish its ore processing process.
“Big trucks”, yes.
Date: 26/08/2018 12:00:59
From: mollwollfumble
ID: 1267722
Subject: re: Gold mining?
mollwollfumble said:
“Incremental improvements”, I’ll look it up. Telfer mine may publish its ore processing process.
This is what Telfer publishes. It’s the good old cyanide process, well known before 1931, but count the stages! Countercurrent process to get the best possible return. Gold is dissolved by the cyanide and is absorbed off that by the activated carbon.
Date: 28/08/2018 12:30:45
From: mollwollfumble
ID: 1268296
Subject: re: Gold mining?
Michael V said:
mollwollfumble said:
Back in 1974, the Club of Rome predicted that the world’s supply of gold would run out in the year 1983-1985.
You can see why in this graph from wikipedia. If the precipitous decrease in gold production between 1970 and 1974 in South Africa is projected forwards then it does indeed took like it could hit zero in 1985.
What interests me is the massive jump in gold production in USA, Australia and Russia between 1980 and 1990. Gold tends to occur in thin layers (alluvial gold) or quartz veins of order 150 mm across. Such sources are rapidly worked out in a couple of years. What has been the improvement in technology that allowed the jump in gold production between 1980 and 1990?
https://upload.wikimedia.org/wikipedia/commons/thumb/e/e2/Top_5_Gold_Producers.png/1280px-Top_5_Gold_Producers.png
Please note that mineable vein gold is not restricted to 150 mm quartz veins. Most veins are much, much wider. It takes grade and tons to make an economic mine. Mines with a long life have both.
The main changes:
1. Understanding of epithermal deposits, especially the large tonnage, low grade, low-sulphidation epithermal systems.
2. Understanding of the link between epithermal gold and porphyry copper systems, leading to the understanding that porphyry copper deposits may (and often do) contain significant gold.
3. Discoveries in the Tanami Desert (a geographically isolated area). One Tanami Desert mine in particular (Callie) supplied a significant proportion of the world’s gold for many years.
4. Incremental improvements in ore milling and other metallurgical processes.
Tanami Desert fields.
Central Tanami
Coyote underground mine
Callie mine
Date: 4/09/2018 21:48:19
From: diddly-squat
ID: 1271489
Subject: re: Gold mining?
mollwollfumble said:
What has been the improvement in technology that allowed the jump in gold production between 1980 and 1990?
the real advancement was, and continues to be, advancement in tyre technology.. because of this we’ve been able to successfully operate really big haul trucks
Date: 4/09/2018 21:54:54
From: roughbarked
ID: 1271493
Subject: re: Gold mining?
diddly-squat said:
mollwollfumble said:
What has been the improvement in technology that allowed the jump in gold production between 1980 and 1990?
the real advancement was, and continues to be, advancement in tyre technology.. because of this we’ve been able to successfully operate really big haul trucks
The incentive was always about price of the raw material. How to haul more of it was secondary to that.
Date: 4/09/2018 21:57:09
From: roughbarked
ID: 1271495
Subject: re: Gold mining?
roughbarked said:
diddly-squat said:
mollwollfumble said:
What has been the improvement in technology that allowed the jump in gold production between 1980 and 1990?
the real advancement was, and continues to be, advancement in tyre technology.. because of this we’ve been able to successfully operate really big haul trucks
The incentive was always about price of the raw material. How to haul more of it was secondary to that.
That these two things happened to concur in the level of price rising or falling could be considered as a coincidence.
Date: 4/09/2018 21:57:43
From: diddly-squat
ID: 1271496
Subject: re: Gold mining?
roughbarked said:
diddly-squat said:
mollwollfumble said:
What has been the improvement in technology that allowed the jump in gold production between 1980 and 1990?
the real advancement was, and continues to be, advancement in tyre technology.. because of this we’ve been able to successfully operate really big haul trucks
The incentive was always about price of the raw material. How to haul more of it was secondary to that.
ummm no… the carrot is the economy of scale… reduce the cost of production down enough and you can mine a lower grade…
Date: 4/09/2018 21:59:17
From: roughbarked
ID: 1271498
Subject: re: Gold mining?
diddly-squat said:
roughbarked said:
diddly-squat said:
the real advancement was, and continues to be, advancement in tyre technology.. because of this we’ve been able to successfully operate really big haul trucks
The incentive was always about price of the raw material. How to haul more of it was secondary to that.
ummm no… the carrot is the economy of scale… reduce the cost of production down enough and you can mine a lower grade…
I’ve been through this so many times. It is a coincidence that tyres were better when they needed them to be.
Date: 4/09/2018 22:03:08
From: diddly-squat
ID: 1271499
Subject: re: Gold mining?
roughbarked said:
diddly-squat said:
roughbarked said:
The incentive was always about price of the raw material. How to haul more of it was secondary to that.
ummm no… the carrot is the economy of scale… reduce the cost of production down enough and you can mine a lower grade…
I’ve been through this so many times. It is a coincidence that tyres were better when they needed them to be.
I don’t understand what you mean.. there was a crap load of effort put into developing tyre technology to support the really large haul trucks.. it was considered and deliberate.
Date: 4/09/2018 22:03:24
From: roughbarked
ID: 1271500
Subject: re: Gold mining?
roughbarked said:
diddly-squat said:
roughbarked said:
The incentive was always about price of the raw material. How to haul more of it was secondary to that.
ummm no… the carrot is the economy of scale… reduce the cost of production down enough and you can mine a lower grade…
I’ve been through this so many times. It is a coincidence that tyres were better when they needed them to be.
Gold production might be big but don’t you think that the tyres were more likely to have been produced for hauling iron ore?
Date: 4/09/2018 22:05:55
From: Boris
ID: 1271501
Subject: re: Gold mining?
roughbarked said:
roughbarked said:
diddly-squat said:
ummm no… the carrot is the economy of scale… reduce the cost of production down enough and you can mine a lower grade…
I’ve been through this so many times. It is a coincidence that tyres were better when they needed them to be.
Gold production might be big but don’t you think that the tyres were more likely to have been produced for hauling iron ore?
oh dear.
Date: 4/09/2018 22:07:36
From: roughbarked
ID: 1271502
Subject: re: Gold mining?
Boris said:
roughbarked said:
roughbarked said:
I’ve been through this so many times. It is a coincidence that tyres were better when they needed them to be.
Gold production might be big but don’t you think that the tyres were more likely to have been produced for hauling iron ore?
oh dear.
Tell me Boris.
Date: 4/09/2018 22:08:47
From: Boris
ID: 1271503
Subject: re: Gold mining?
roughbarked said:
Boris said:
roughbarked said:
Gold production might be big but don’t you think that the tyres were more likely to have been produced for hauling iron ore?
oh dear.
Tell me Boris.
it doesn’t matter which industry they were developed for the gold mining industry benefited.
Date: 4/09/2018 22:11:30
From: roughbarked
ID: 1271504
Subject: re: Gold mining?
Boris said:
roughbarked said:
Boris said:
oh dear.
Tell me Boris.
it doesn’t matter which industry they were developed for the gold mining industry benefited.
Yeah. Secondary. Gold price fluctuates more against the scale for finding any than what I have mentioned.
Date: 4/09/2018 22:13:14
From: Boris
ID: 1271505
Subject: re: Gold mining?
roughbarked said:
Boris said:
roughbarked said:
Tell me Boris.
it doesn’t matter which industry they were developed for the gold mining industry benefited.
Yeah. Secondary. Gold price fluctuates more against the scale for finding any than what I have mentioned.
it would have been the mining industry in general, no specific branch.
Date: 4/09/2018 22:16:08
From: roughbarked
ID: 1271506
Subject: re: Gold mining?
Boris said:
roughbarked said:
Boris said:
it doesn’t matter which industry they were developed for the gold mining industry benefited.
Yeah. Secondary. Gold price fluctuates more against the scale for finding any than what I have mentioned.
it would have been the mining industry in general, no specific branch.
OK.
No argument there.
and gold pays moe than iron but they find so much less of it and even when they know it is there, it isn’t worth even bringing in trucks until after, yes. Trucks happenened and the price of gold went up. WTF do u take me for?
Date: 4/09/2018 22:24:55
From: roughbarked
ID: 1271507
Subject: re: Gold mining?
roughbarked said:
Boris said:
roughbarked said:
Yeah. Secondary. Gold price fluctuates more against the scale for finding any than what I have mentioned.
it would have been the mining industry in general, no specific branch.
OK.
No argument there.
and gold pays moe than iron but they find so much less of it and even when they know it is there, it isn’t worth even bringing in trucks until after, yes. Trucks happenened and the price of gold went up. WTF do u take me for?
Must admit I did expect a an answer more qickly from you, Boris.
Date: 4/09/2018 22:25:20
From: roughbarked
ID: 1271508
Subject: re: Gold mining?
roughbarked said:
roughbarked said:
Boris said:
it would have been the mining industry in general, no specific branch.
OK.
No argument there.
and gold pays moe than iron but they find so much less of it and even when they know it is there, it isn’t worth even bringing in trucks until after, yes. Trucks happenened and the price of gold went up. WTF do u take me for?
Must admit I did expect a an answer more qickly from you, Boris.
u
Date: 4/09/2018 22:26:31
From: diddly-squat
ID: 1271509
Subject: re: Gold mining?
roughbarked said:
roughbarked said:
diddly-squat said:
ummm no… the carrot is the economy of scale… reduce the cost of production down enough and you can mine a lower grade…
I’ve been through this so many times. It is a coincidence that tyres were better when they needed them to be.
Gold production might be big but don’t you think that the tyres were more likely to have been produced for hauling iron ore?
I wasn’t talking about gold specifically… it’s all large scale open cut mining
Date: 4/09/2018 22:27:06
From: roughbarked
ID: 1271510
Subject: re: Gold mining?
diddly-squat said:
roughbarked said:
roughbarked said:
I’ve been through this so many times. It is a coincidence that tyres were better when they needed them to be.
Gold production might be big but don’t you think that the tyres were more likely to have been produced for hauling iron ore?
I wasn’t talking about gold specifically… it’s all large scale open cut mining
That is the scale of it. Yeah.
Date: 4/09/2018 22:27:29
From: diddly-squat
ID: 1271511
Subject: re: Gold mining?
roughbarked said:
Boris said:
roughbarked said:
Yeah. Secondary. Gold price fluctuates more against the scale for finding any than what I have mentioned.
it would have been the mining industry in general, no specific branch.
OK.
No argument there.
and gold pays moe than iron but they find so much less of it and even when they know it is there, it isn’t worth even bringing in trucks until after, yes. Trucks happenened and the price of gold went up. WTF do u take me for?
what the actual?
Date: 4/09/2018 22:32:02
From: roughbarked
ID: 1271512
Subject: re: Gold mining?
diddly-squat said:
roughbarked said:
Boris said:
it would have been the mining industry in general, no specific branch.
OK.
No argument there.
and gold pays moe than iron but they find so much less of it and even when they know it is there, it isn’t worth even bringing in trucks until after, yes. Trucks happenened and the price of gold went up. WTF do u take me for?
what the actual?
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
Date: 4/09/2018 22:34:07
From: Boris
ID: 1271514
Subject: re: Gold mining?
roughbarked said:
diddly-squat said:
roughbarked said:
OK.
No argument there.
and gold pays moe than iron but they find so much less of it and even when they know it is there, it isn’t worth even bringing in trucks until after, yes. Trucks happenened and the price of gold went up. WTF do u take me for?
what the actual?
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
when i worked for SoG we were looking at 5ppm. that was mid 90s.
Date: 4/09/2018 22:36:22
From: roughbarked
ID: 1271515
Subject: re: Gold mining?
Boris said:
roughbarked said:
diddly-squat said:
what the actual?
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
when i worked for SoG we were looking at 5ppm. that was mid 90s.
That is exactly what I meant about prices. Check backwards and forewards.
Date: 4/09/2018 22:39:32
From: party_pants
ID: 1271516
Subject: re: Gold mining?
roughbarked said:
diddly-squat said:
roughbarked said:
OK.
No argument there.
and gold pays moe than iron but they find so much less of it and even when they know it is there, it isn’t worth even bringing in trucks until after, yes. Trucks happenened and the price of gold went up. WTF do u take me for?
what the actual?
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
about 2 grams per tonne for the Kalgoorlie mine.
Date: 4/09/2018 22:39:54
From: diddly-squat
ID: 1271517
Subject: re: Gold mining?
roughbarked said:
diddly-squat said:
roughbarked said:
OK.
No argument there.
and gold pays moe than iron but they find so much less of it and even when they know it is there, it isn’t worth even bringing in trucks until after, yes. Trucks happenened and the price of gold went up. WTF do u take me for?
what the actual?
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
it’s completely different… gold sells for about $53,500/kg.. iron ore is a touch over $0.09/kg
Date: 4/09/2018 22:41:04
From: Boris
ID: 1271518
Subject: re: Gold mining?
party_pants said:
roughbarked said:
diddly-squat said:
what the actual?
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
about 2 grams per tonne for the Kalgoorlie mine.
yep, prices were lower for gold in the 90s.
Date: 4/09/2018 22:41:48
From: roughbarked
ID: 1271519
Subject: re: Gold mining?
roughbarked said:
Boris said:
roughbarked said:
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
when i worked for SoG we were looking at 5ppm. that was mid 90s.
That is exactly what I meant about prices. Check backwards and forewards.
in the early seventies I was apprenticed to a manufacturing jeweller. I was also getting married in 1975. I asked my boss could I make wedding bands? He said saw two bits off this pipe and size them to your fingers. It cost me a total of twenty bucks. When my son was married in 2007, the same wedders cost me $900.
Date: 4/09/2018 22:42:40
From: roughbarked
ID: 1271520
Subject: re: Gold mining?
party_pants said:
roughbarked said:
diddly-squat said:
what the actual?
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
about 2 grams per tonne for the Kalgoorlie mine.
Yeah but that is the richest mile on the planet.
Date: 4/09/2018 22:43:24
From: diddly-squat
ID: 1271521
Subject: re: Gold mining?
diddly-squat said:
roughbarked said:
diddly-squat said:
what the actual?
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
it’s completely different… gold sells for about $53,500/kg.. iron ore is a touch over $0.09/kg
anyway the point is, it’s all about the cost of production… and the only way to reduce the cost of production is to move more material, more efficiently and the key to that is bigger trucks
Date: 4/09/2018 22:43:28
From: Boris
ID: 1271522
Subject: re: Gold mining?
party_pants said:
roughbarked said:
diddly-squat said:
what the actual?
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
about 2 grams per tonne for the Kalgoorlie mine.
and then it became profitable to go through old tailings with better refining techniques. so i heard.
Date: 4/09/2018 22:43:56
From: roughbarked
ID: 1271523
Subject: re: Gold mining?
diddly-squat said:
roughbarked said:
diddly-squat said:
what the actual?
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
it’s completely different… gold sells for about $53,500/kg.. iron ore is a touch over $0.09/kg
I am asking you.. how many 0.09/kg to the 130 tonne truckload?
Date: 4/09/2018 22:44:49
From: roughbarked
ID: 1271525
Subject: re: Gold mining?
Boris said:
party_pants said:
roughbarked said:
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
about 2 grams per tonne for the Kalgoorlie mine.
yep, prices were lower for gold in the 90s.
Lower than the 80’s, yes.
Date: 4/09/2018 22:44:58
From: Boris
ID: 1271526
Subject: re: Gold mining?
diddly-squat said:
diddly-squat said:
roughbarked said:
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
it’s completely different… gold sells for about $53,500/kg.. iron ore is a touch over $0.09/kg
anyway the point is, it’s all about the cost of production… and the only way to reduce the cost of production is to move more material, more efficiently and the key to that is bigger trucks
driven from Perth.
:-)
Date: 4/09/2018 22:46:05
From: roughbarked
ID: 1271528
Subject: re: Gold mining?
diddly-squat said:
diddly-squat said:
roughbarked said:
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
it’s completely different… gold sells for about $53,500/kg.. iron ore is a touch over $0.09/kg
anyway the point is, it’s all about the cost of production… and the only way to reduce the cost of production is to move more material, more efficiently and the key to that is bigger trucks
But it is easier to move more iron than gold.. don’t you cunts get it?
Date: 4/09/2018 22:46:53
From: roughbarked
ID: 1271529
Subject: re: Gold mining?
Boris said:
party_pants said:
roughbarked said:
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
about 2 grams per tonne for the Kalgoorlie mine.
and then it became profitable to go through old tailings with better refining techniques. so i heard.
always. when the price goes up, new people go to try.
Date: 4/09/2018 22:47:20
From: Witty Rejoinder
ID: 1271530
Subject: re: Gold mining?
roughbarked said:
diddly-squat said:
diddly-squat said:
it’s completely different… gold sells for about $53,500/kg.. iron ore is a touch over $0.09/kg
anyway the point is, it’s all about the cost of production… and the only way to reduce the cost of production is to move more material, more efficiently and the key to that is bigger trucks
But it is easier to move more iron than gold.. don’t you cunts get it?
Bullies the lot of them.
Date: 4/09/2018 22:49:35
From: diddly-squat
ID: 1271533
Subject: re: Gold mining?
roughbarked said:
diddly-squat said:
roughbarked said:
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
it’s completely different… gold sells for about $53,500/kg.. iron ore is a touch over $0.09/kg
I am asking you.. how many 0.09/kg to the 130 tonne truckload?
again you miss the point… but anyway…
Date: 4/09/2018 22:49:42
From: party_pants
ID: 1271534
Subject: re: Gold mining?
roughbarked said:
diddly-squat said:
diddly-squat said:
it’s completely different… gold sells for about $53,500/kg.. iron ore is a touch over $0.09/kg
anyway the point is, it’s all about the cost of production… and the only way to reduce the cost of production is to move more material, more efficiently and the key to that is bigger trucks
But it is easier to move more iron than gold.. don’t you cunts get it?
nah, it’s the same. Trucks haul it out of the mine, then it goes to the primary crusher. In iron ore they load it onto trains and send it on the coast, in gold they send it to the mill and refinery on site.Getting the dirt out of the ground part to the primary crusher is the same.
Date: 4/09/2018 22:49:51
From: roughbarked
ID: 1271535
Subject: re: Gold mining?
Witty Rejoinder said:
roughbarked said:
diddly-squat said:
anyway the point is, it’s all about the cost of production… and the only way to reduce the cost of production is to move more material, more efficiently and the key to that is bigger trucks
But it is easier to move more iron than gold.. don’t you cunts get it?
Bullies the lot of them.
Indeed they are.
Date: 4/09/2018 22:53:27
From: mollwollfumble
ID: 1271538
Subject: re: Gold mining?
roughbarked said:
diddly-squat said:
roughbarked said:
OK.
No argument there.
and gold pays moe than iron but they find so much less of it and even when they know it is there, it isn’t worth even bringing in trucks until after, yes. Trucks happenened and the price of gold went up. WTF do u take me for?
what the actual?
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
Alluvial gold is always or almost always found in the company of other heavy minerals. So why throw away the other heavy minerals. Surely they’re worth something.
Date: 4/09/2018 22:54:13
From: diddly-squat
ID: 1271539
Subject: re: Gold mining?
roughbarked said:
diddly-squat said:
diddly-squat said:
it’s completely different… gold sells for about $53,500/kg.. iron ore is a touch over $0.09/kg
anyway the point is, it’s all about the cost of production… and the only way to reduce the cost of production is to move more material, more efficiently and the key to that is bigger trucks
But it is easier to move more iron than gold.. don’t you cunts get it?
actually it’s not… moving bulk commodities like iron ore (at a nominal 65% FE) is actually really hard because you need to move sooooo much more.. the logistics network that it requires is incredible… trains, boats, etc… a gold mine can package up refined 99% pure gold and put it ona truck..
it’s not a simple one-to-one comparison
but anyway, not really into being call a cunt so I’ll be off… catch you people and you lifeboat later…
Date: 4/09/2018 22:54:26
From: roughbarked
ID: 1271540
Subject: re: Gold mining?
diddly-squat said:
roughbarked said:
diddly-squat said:
it’s completely different… gold sells for about $53,500/kg.. iron ore is a touch over $0.09/kg
I am asking you.. how many 0.09/kg to the 130 tonne truckload?
again you miss the point… but anyway…
Look. tell me. I am not the otacle.
Date: 4/09/2018 22:56:11
From: roughbarked
ID: 1271543
Subject: re: Gold mining?
party_pants said:
roughbarked said:
diddly-squat said:
anyway the point is, it’s all about the cost of production… and the only way to reduce the cost of production is to move more material, more efficiently and the key to that is bigger trucks
But it is easier to move more iron than gold.. don’t you cunts get it?
nah, it’s the same. Trucks haul it out of the mine, then it goes to the primary crusher. In iron ore they load it onto trains and send it on the coast, in gold they send it to the mill and refinery on site.Getting the dirt out of the ground part to the primary crusher is the same.
I know what you are saying but it is all about the payload. We all knowe that 99% of all prospects, fail.
Date: 4/09/2018 22:57:43
From: roughbarked
ID: 1271544
Subject: re: Gold mining?
mollwollfumble said:
roughbarked said:
diddly-squat said:
what the actual?
OK so you need an ounce of gold for every cubic metre of ore to pay or maybe less when the prices go up.
How much do you need of iron ore?
Alluvial gold is always or almost always found in the company of other heavy minerals. So why throw away the other heavy minerals. Surely they’re worth something.
It is a very fair point. There was often a lot of easily available tin and spinel and sapphire and etc..
Date: 4/09/2018 22:59:33
From: roughbarked
ID: 1271546
Subject: re: Gold mining?
diddly-squat said:
roughbarked said:
diddly-squat said:
anyway the point is, it’s all about the cost of production… and the only way to reduce the cost of production is to move more material, more efficiently and the key to that is bigger trucks
But it is easier to move more iron than gold.. don’t you cunts get it?
actually it’s not… moving bulk commodities like iron ore (at a nominal 65% FE) is actually really hard because you need to move sooooo much more.. the logistics network that it requires is incredible… trains, boats, etc… a gold mine can package up refined 99% pure gold and put it ona truck..
it’s not a simple one-to-one comparison
but anyway, not really into being call a cunt so I’ll be off… catch you people and you lifeboat later…
You are way off target. So much more iron is needed than gold and I didn’t. unless you thought it applied.