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Cannington Mine
The Cannington Silver and Lead Mine is an Australian underground mine located in north-west Queensland, in the Shire of McKinlay, about southeast of Mount Isa. The deposit was discovered by Broken Hill Proprietary Company (BHP) in 1990.〔 (Abstract )〕 Although sitework and underground mining began in 1997, full production was not achieved until early 1999, with 1.5 million tons of ore processed in 1999. Production since has reached 3 million tons of ore per year.〔 it was the largest and lowest cost silver and lead mine in the world. The expected life of the Cannington mine is 25 years.〔 On August 19, 2014, the mine's owner BHP Billiton announced it was splitting the company in two. A newly formed entity called South32 is to house BHP Billiton's non-core businesses including the Cannington Mine. To be capitalized at $15 billion, South32 is to be listed on the Australian Securities Exchange, with a secondary listing in Johannesburg.
==Geography==
Cannington lies on a broad plain with a few low mesas. The plain is crossed by meandering rivers which are dry for a large part of the year, but which flood periodically. The area is semi-arid with of annual rainfall falling mostly between November and March. The mine itself lies near the confluence of the Hamilton River and Trepell Creek.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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