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Using Thiosulphate Gold Leaching is nothing new but here is the first ever gold bar that doesn’t involve use of cyanide extraction. http://blog.csiro.au/eureka-a-solid-gold-solution-to-make-archimedes-proud/ link work that was done in 1890's
Similar to UBCs patent from 2001 http://www.google.com/patents/US6632264