3 ms·At least it's less wasteful than mining gold.by VMG 13y agoAt least it's less wasteful than mining gold.brador 13y agoIs it?ivanca 13y agoYes, exponentially. http://en.wikipedia.org/wiki/Open-pit_mining http://en.wikipedia.org/wiki/Open-pit_mining http://en.wikipedia.org/wiki/Gold_cyanidation http://en.wikipedia.org/wiki/Gold_cyanidation