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Gold Extraction Process Using Cyanide

May 06 2015nbsp018332nevada torontobased barrick gold is the first producer to commercialize thiosulphate recovery of gold thus eliminating the use of cyanide in the process the first dor233 bar 107 oz was poured in november 2014 at the goldstrike mine north of carlin barrick spent more than 20 years perfecting its thiosulphate process

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