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Sino Gold Mining Limited or Sino Gold ( simplified Chinese: 澳华黄金; traditional Chinese: 澳華黃金; pinyin: àoHuá huángjīn) was a gold mining company headquartered in Sydney and conducting most of their mining operations in Jilin, Heilongjiang, Guizhou, and Shaanxi provinces in the People's Republic of China.When was Sino Gold acquired by Eldorado Gold?
In addition to being listed on the Australian Stock Exchange, they completed a listing on the Hong Kong Stock Exchange, with Morgan Stanley appointed as financial advisor early in its history. They were later acquired by Canadian mining group Eldorado Gold in 2009 for US 1.8 billion dollars.Where was sodium cyanide used in gold mining?
Kyrgyzstan, Kumtor Gold Mine, 1998: A truck carrying 2 tons of sodium cyanide crashed into the Barskoon river, resulting in more than 2,000 people seeking medical care.How is cyanide used to leach gold out of ore?
Heap leaching: In the open, cyanide solution is sprayed over huge heaps of crushed ore spread atop giant collection pads. The cyanide dissolves the gold from the ore into the solution as it trickles through the heap. The pad collects the now metal-impregnated solution which is stripped of gold and resprayed on the heap until the ore is depleted.