billbob78 said:Just clarify, producing more than one product does not mean that a mine produces only the one product. Yes it may produce lead, zinc and silver, it's silver is not considered a by-product because it is specifically targeted. Base on the production number reported in 2013 Cannington did produce the highest volume in 2013. Do you have any backup printed where it states that silver is a by-product? If so I will humbly apologise.
"In 2010 it was the largest and lowest cost silver and leads mine in the world, representing 6 per cent of the world's primary silver production." As noted in the article below... I would like to highlight ... 6 per cent of the world's primary silver production...... I take it the article seems to think it is a primary product...
http://www.miningoilgas.com.au/index.php/products/a-z?sobi2Task=sobi2Details&catid=10&sobi2Id=130
But I am looking forward to any reference you can make... And again my apologies if I am wrong.
Lead and zinc concentrate processing
Processing steps used to produce the lead and zinc concentrates include comminution, flotation, leaching and dewatering. Waste water is pumped to a tailings dam with the flotation overflow. The overflow from the lead concentrate thickener is recycled to the lead flotation circuit. The operation of the concentrator is automated with progammable logic controllers (PLCs), an online sample analyser being used to provide continuous assays on a number of the concentrator streams for silver, lead and zinc. The silver is leached from the lead and zinc concentrates before smelting.
billbob78 said:
BS.Court Jester said:you are if the lead was not there the mine wouldn't be either, value wise it makes more $$ per year from lead alone than silver. 70% of the ore is lead, which gets extracted first then is processed to get the silver. it is a lead mine that produces silver not the other way around.
Silver is the byproduct taken out after the lead is concentrated, making it the BYPRODUCT of the mine
Source: http://www.miningnews.net/knowledgebase/company/cannington/Thursday, May 15, 2014
...Australia may well be the fourth biggest silver producer in the world and is home to the globe's largest primary silver mine (Cannington) but you hear very little about the white metal in this country.
wrcmad said:BS.Court Jester said:you are if the lead was not there the mine wouldn't be either, value wise it makes more $$ per year from lead alone than silver. 70% of the ore is lead, which gets extracted first then is processed to get the silver. it is a lead mine that produces silver not the other way around.
Silver is the byproduct taken out after the lead is concentrated, making it the BYPRODUCT of the mine
Broken Hill has a similar geology where the ore contains silver, lead and zinc. Silver was the primary target.
Revenues of lead now exceed silver only because the silver price has crapped itself. When the mine was commissioned, and for many years after, silver was the primary revenue.
Source: http://www.miningnews.net/knowledgebase/company/cannington/Thursday, May 15, 2014
...Australia may well be the fourth biggest silver producer in the world and is home to the globe's largest primary silver mine (Cannington) but you hear very little about the white metal in this country.
In Australia, half of the country's silver output comes from BHP's Cannington silver and lead mine in north-west Queensland. Other significant silver mines are Glencore Xstrata's McArthur River mine in the Northern Territory, Zhongjin Lingnan's Broken Hill mine in New South Wales, Cobar Consolidated's Wonawinta mine in New South Wales, and Minmetals' Rosebery Base mine in Tasmania.
BHP is the world's second-biggest silver miner, just behind Mexico's Fresnillo.
Mr Battershill pointed out that over the next two years about 10 per cent of the world's zinc production will come off stream. The silver extracted as a byproduct in those mines will, therefore, stay in the ground and give some firm support to the silver price. "That's more of a fundamental reason to own it than gold, I would say," said Mr Battershill, who tipped a silver price of $US17.50 for the end of the year
Read more: http://www.smh.com.au/business/anal...ryear-lows-20141001-10ompi.html#ixzz3IHfAMDAy
billbob78 said:billbob78 said:
Just show me any report or link which states that the lead is a by-product and I will accept. But according to the silver institute it is one of the primary products. So I doubt my list is wrong. Perhaps email them.
billbob78 said:Mr Battershill pointed out that over the next two years about 10 per cent of the world's zinc production will come off stream. The silver extracted as a byproduct in those mines will, therefore, stay in the ground and give some firm support to the silver price
He is referring to the zinc mines mate.
In Australia, half of the country's silver output comes from BHP's Cannington silver and lead mine in north-west Queensland.
Read more: http://www.smh.com.au/business/anal...ryear-lows-20141001-10ompi.html#ixzz3IHnpTgbu
BHP is the world's second-biggest silver miner, just behind Mexico's Fresnillo.
Mr Battershill pointed out that over the next two years about 10 per cent of the world's zinc production will come off stream. The silver extracted as a byproduct in those mines will, therefore, stay in the ground and give some firm support to the silver price
The Dark Side Of The Silver Mining Industry
..The top primary silver miners average yield declined 41% from 13 oz/t in 2005, to 7.6 oz/t in 2013. The top 6 mines and companies included in the chart above are BHP Billiton's Cannington mine, Fresnillo, Pan American Silver, Polymetal's Dukat & Lunnoye mines, Hochschild and Hecla.
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Four of the mines suffered year over year declines while two actually increased yields. Here is the breakdown:
Change in Yield (2012-2013)
BHP Cannington mine = - 1.0 oz/t
Fresnillo mine = -1.2 oz/t
Pan American Silver = -0.3 oz/t
Polymetal = +0.6 oz/t
Hochschild = -0.4 oz/t
Hecla = +1.0 oz/t
Both BHP Cannington and the Fresnillo mine will continue to see their average ore grades decline in the next few years, however Fresnillo's silver grades should stabilize at 271 grams per tonne.
Hecla increased its average yield at its Greens Creek mine in Alaska by more than an ounce in 2013, which was the contributing factor pushing its average yield higher last year.
Declining ore grades are the Dark Side of the mining sector because the industry would rather not advertise its impact on the cost of producing silver. This next chart shows the increase in total processed ore since 2005.
...Even though the average silver yield only declined 41% since 2005, the amount of processed ore increased 65% from 9.4 million tonnes in 2005 to 15.5 million tonnes in 2013. Not only has the amount of processed tonnage increased to produce less silver in 2013 compared to 2005 the costs of energy, labor and materials have doubled or tripled during the same time period.
More: http://srsroccoreport.com/the-dark-.../the-dark-side-of-the-silver-mining-industry/
SilverPete said:Declining ore grades, energy and labor costs increasing, extreme cost cutting...
The Dark Side Of The Silver Mining Industry
..The top primary silver miners average yield declined 41% from 13 oz/t in 2005, to 7.6 oz/t in 2013. The top 6 mines and companies included in the chart above are BHP Billiton's Cannington mine, Fresnillo, Pan American Silver, Polymetal's Dukat & Lunnoye mines, Hochschild and Hecla.
http://i.imgur.com/zR5l9zd.jpg
Four of the mines suffered year over year declines while two actually increased yields. Here is the breakdown:
Change in Yield (2012-2013)
BHP Cannington mine = - 1.0 oz/t
Fresnillo mine = -1.2 oz/t
Pan American Silver = -0.3 oz/t
Polymetal = +0.6 oz/t
Hochschild = -0.4 oz/t
Hecla = +1.0 oz/t
Both BHP Cannington and the Fresnillo mine will continue to see their average ore grades decline in the next few years, however Fresnillo's silver grades should stabilize at 271 grams per tonne.
Hecla increased its average yield at its Greens Creek mine in Alaska by more than an ounce in 2013, which was the contributing factor pushing its average yield higher last year.
Declining ore grades are the Dark Side of the mining sector because the industry would rather not advertise its impact on the cost of producing silver. This next chart shows the increase in total processed ore since 2005.
...Even though the average silver yield only declined 41% since 2005, the amount of processed ore increased 65% from 9.4 million tonnes in 2005 to 15.5 million tonnes in 2013. Not only has the amount of processed tonnage increased to produce less silver in 2013 compared to 2005 the costs of energy, labor and materials have doubled or tripled during the same time period.
More: http://srsroccoreport.com/the-dark-.../the-dark-side-of-the-silver-mining-industry/
Top 3 Primary Silver-producing Mines of 2012
The top three for 2012 are located in Australia, Mexico and Russia....
Cannington mine, Australia
http://silverinvestingnews.com/1875...lliton-polymetal-mexico-australia-russia.html
Less Scrap Means Total Silver Supplies Fell In 2013
Primary silver output accounted for 29% of global silver mine supply, the report said.
The gains included new output from Escobal in Guatemala, the start of Del Toro and the
continued ramp-up of Saucito in Mexico, and also the restart of Lucky Friday in the U.S. following shaft remediation, the report said. This helped counter lower output from the world's two largest primary mines, Cannington and Fresnillo.
http://www.kitco.com/news/2014-05-1...Means-Total-Silver-Supplies-Fell-In-2013.html
Dean Dalla Valle was appointed President, Coal in May 2013.
He has 36 years' experience in BHP Billiton. Mr Dalla Valle was
previously the President of the Uranium business for three years
and prior to that held the positions of Asset President, Olympic
Dam, Asset President of the Cannington silver mine....
Source: BHPBilliton Summary Review 2013
billbob78 said:Cannington is not closing in in 2 years time, he is referring to Zinc mines (Perseverance, Brunswick and Century). It is that lead which he is referring to which may well be by-products.
He is not making a statement that Cannington is closing down, nor does he refer to Cannington producing a silver byproduct, they actually refer to it as a Silver and Lead mine.
wrcmad said:We could sling articles all night.... :lol:
Here are a few more:
Top 3 Primary Silver-producing Mines of 2012
The top three for 2012 are located in Australia, Mexico and Russia....
Cannington mine, Australia
http://silverinvestingnews.com/1875...lliton-polymetal-mexico-australia-russia.html
Less Scrap Means Total Silver Supplies Fell In 2013
Primary silver output accounted for 29% of global silver mine supply, the report said.
The gains included new output from Escobal in Guatemala, the start of Del Toro and the
continued ramp-up of Saucito in Mexico, and also the restart of Lucky Friday in the U.S. following shaft remediation, the report said. This helped counter lower output from the world's two largest primary mines, Cannington and Fresnillo.
http://www.kitco.com/news/2014-05-1...Means-Total-Silver-Supplies-Fell-In-2013.html
And... from the owner.... BHP Billiton:
Dean Dalla Valle was appointed President, Coal in May 2013.
He has 36 years' experience in BHP Billiton. Mr Dalla Valle was
previously the President of the Uranium business for three years
and prior to that held the positions of Asset President, Olympic
Dam, Asset President of the Cannington silver mine....
billbob78 said:Sorry WRCMAD, apparently ALL those articles are wrong..... Ha ha... It appears we can not trust anything we read anymore...
billbob78 said:"they say silver is a byproduct and it will be left in the ground to support the silver price i.e. cannington will still be producing lead just not extracting the silver BYPRODUCT"
I have been an analyst in base metal mining for 15 years and this statement clearly indicates you don't know what you are talking about.
I have a 20 year background in process metallurgy, including 16 years at BHP, and apparently I don't know shit from clay. :lol:billbob78 said:"they say silver is a byproduct and it will be left in the ground to support the silver price i.e. cannington will still be producing lead just not extracting the silver BYPRODUCT"
I have been an analyst in base metal mining for 15 years and this statement clearly indicates you don't know what you are talking about.