Are we crazy???
From RandomHistory.com and Refdesk.com :
"The Mines of South Africa can descend as far as 12,000 feet and reach temperatures of 130 degrees. To produce an ounce of gold requires 38 man hours, 1400 gallons of water, enough electricity to run a large house for ten days, and chemicals such as cyanide, acids, lead, borax, and lime. In order to extract South Africa's yearly output of 500 tons of gold, nearly 70 million tons of earth are raised and milled."