Cannington s annual contracts are regarded as a benchmark for other highsilver lead concentrates. Roughly ten times lower in cost per ton compared to under ground mining. The cost to install and operate the solar farm will be offset. Bawdwin, the mine that hoover built, is about to get a new. The cannington silver mine is located in northwest queensland, 200km south east of mount isa, near the township of mckinlay. Cannington silver and lead mine, queensland mining technology. In less than three years myanmarbased myl has established a 101million tonne mt jorc resource grading 4 per cent lead, 3. The reserves on average hold 261 grams per ton of silver and a little over one gram per ton of gold. In 2005, the cannington mine produced a stunning 44 moz of silver at an average ore grade of 515 grams per ton or 16. Cannington life extension project mine hereafter referred to as clep or the project is currently one of the largest singlepit. In 2020, the yearold bawdwin polymetallic mine is accelerating towards a bigtime revival. But theres another reason for the woes of mining firms. Peru costs are presented in usd and reflect the deduction of expected.
Top 10 biggest silver mines in the world precious metal. This fully automated vertical hoisting system gives bhp cannington mine the best life cycle cost. Cannington mine south32 cannington, mckinlay, mckinlay. The deposit was discovered by bhp minerals in 1990 and the mine was commissioned in 1997 at a cost of. Alexco resources bellekeno project is canadas only primary silver mine producing silver at over 800 gt 24 ozt, which is twice the ore grade of the top two silver mines in the world. The cannington silverrich leadzinc mine is an underground mine located in. The data in the chart below is shown in grams per ton. Cannington life extension project environment, land and. Geotechnical properties of cemented paste backfill from cannington mine, australia. Production since has reached 3 million tons of ore per year. As reported by south32 to the asx, lse and jse in the south32 information memorandum, available at au.
The project scope is for a million tonne 1 per annum standalone processing plant, with mill feed sourced from open pit and underground. Top primary silver miners average yield falls to record. The field work involved monitoring of paste fill during production blasts, in situ tests in paste fill at cannington mine and laboratory tests on the paste fill samples. Clearly, a possible future rise of prices could increase the share of silver. The cannington silver and lead mine is an australian underground mine located in northwest. Cannington mineral resources and ore reserves update south32. Pdf silver is one of the rarest metals in nature and certainly among the most.
The expected life of the cannington mine is 25 years. The mine has produced over twentyone million ounces of silver, nearly seventy thousand ounces of gold, over seventeen thousand tonnes of lead, and over twenty thousand tonnes of zinc. Pdf are the worldleading primary silver mines exhausting. Cannington targets a consistent price realisation of 3 mamoss for its sales. There are three major trends that are fundamentally transforming the industry into climatesmart mining. Cannington mine south32 cannington, mckinlay, mckinlay shire.
Cannington s silver ore grades fell from 453 gt grams per ton at year end in 2010 to an average of only 352 gt compared to the same period in 2011. All these are critical factors that will impact silver in a negative and positive way negative. The cannington silver lead zinc deposit is located near mt isa in north west queensland. The operating staff is thus reminded that maximum efficiency results from minimum cost per ounce of metal rather than minimum cost per ton of ore, which should have a salutary effect when such questions as control of dilution and grade of ore in mining and loss of metal in milling are considered. Flight arrival information for cannington station airport ycam located in cannington station, queensland, australia. For example, future revenues from our operations, projects or mines. This world class orebody is owned by bhp world minerals bhp and is estimated to contain 45 million tonnes of ore at an average grade of 11 per cent lead, four per cent zinc and 500 grams tonne silver. On august 19, 2014, the mine s owner bhp billiton announced it was splitting the company in two. Million dry metric tonnes, gt ag grams per tonne of silver, % pb. In my newest video, i discuss the changes that have taken place in the worlds two largest silver mines, the cannington mine in australia and the fresnillo mine in mexico. An environmental impact statement eis for the proposed cannington life extension project has been prepared by bhp billiton minerals pty ltd bhp billiton cannington. The lead, zinc and silver mine is situated on the trepell special lease, approximately 140.
Delivering a healthy atmosphere underground in a cost. By srsrocco peak silver there is this notion that if a mine can produce more silver per ton, it will be able to generate more profits. Although sitework and underground mining began in 1997, full production was not achieved until early 1999, with 1. The largest primary silver mine in the world experienced a huge decline in its production due to falling ore grades. Underground mining methods presents the latest principles and techniques in use today. Lowest producing cost gold mine in 1998 mine engineer. A 42% increase in total estimated open cut mineral resource with a 20% reduction in total estimated underground mineral resource. The higher terms come as both miners and smelters face challenges in a lowprice environment for sister metals lead and zinc, along with silver, which forms a large part of revenues for many teams. Costmine industry standard for mining cost estimating. As of 2010 it was the largest and lowest cost silver and lead mine in the world. Cannington silver and lead mine, queensland mining. Triaxial geophones were installed in stope 4261 at cannington mine, which had previously been mined and filled with paste fill. August 28, 20 top 3 primary silverproducing mines of 2012 silver is a metallic chemical element that has a wide variety of uses, primarily in industry, jewelry and decor.
Smooth transition from underground to open pit mining. Reflecting the international and diverse nature of the industry, a series of mining case studies is presented covering the commodity range from iron ore to diamonds extracted by operations located in all corners of the world. The electricity generated supplies the mine s accommodation village and airport, with the surplus electricity supporting the mining and processing operations at cannington. Ltifr for queensland metalliferous mines 2003 2004. The worlds two largest silver mines have seen their productivity decline substantially due to falling ore grades and rising costs. Cannington, the worlds largest single producer of silver and lead, uses maptek vulcan for mine planning and is applying it to the expansion project. Are the worldleading primary silver mines exhausting. This article presents cost models for open pit mines, which takes into account cost uncertainty. Capital costs are based on the expected future development of the mine. The cannington underground mine is accessed by means of a decline ramp from the surface although there is a hoisting shaft that can handle 1. In this paper, cost uncertainty is considered as cost of under production, and cost of over production.
Cannington is an operating underground mine which has been in continuous. Bhp billiton cannington mine is a multicommodity operation 200 km southeast of mt isa in northwest queensland. Top primary silver miners average yield falls to record low. The largest silver producing mine in the world is the cannington mine in australia. This calculator will allow equipment estimates in locales outside north america. At mount isa, both the copper and leadzinc streams produce ore from relatively new operations to be blended with material from more mature operations.
This provides an effective and cost efficient approach for addressing the surface subsidence and overburden. Second, there is digitalization, which is resulting in increased productivity and more sustainable use of resources while lowering input cost. South32 acquired the 100% interest in cannington from bhp billiton as a result of south32s demerger from bhp billiton. Grade control at a multisource operation mount isa lead. Rdm asx announcement 23 october 20 1 maronan deposit preliminary mine scoping study red metal limited has completed ais a minerals exploration preliminary mine scoping study study on the inferred leadsilver and coppergold resources at the 100% owned maronan project located some 100 kilometres north ofexploration, evaluation and. The existing cannington mine has been operating since 1997, and comprises two underground mining zones north and south and associated processes. Delivering a healthy atmosphere underground in a cost conscious environment. Gone are the days when silver mines could produce silver at 15. The ore travels to the surface from depths of up to 620 metres m via two methods.
Henry coppergold mine figure 2 and about 60 kilometres north of altona mining limiteds advanced little eva deposit where a 59 million tonnes deposit grading 0. Senior mine planning engineer, south32 cannington mine. The cannington mine in australia was one of the largest silver producing mines in the world. Effects of blasting on the stability of paste fill stopes. Both openstope and bench mining methods are used at cannington, with approximately 3. Unfortunately, for alexco resources this is not case. The third trend is automation, which will also increase productivity and change the way we work. Pdf geotechnical properties of cemented paste backfill. One of the two tonne dead weight skips prior to erection the complete mine hoisting system, including both mechanical and electrical parts, as well as shaft equipment, was designed, manufactured, installed and commissioned by abb. Cost of mining coal continues to climb the washington post. Includes airline, flight number, origin airport, destination airport, flight delays, flight status, and flight tracking.