Urban Miners in Japan Find Precious Metals in Discarded Gadgets

China isn't the only nation dismantling used electronics to get at the gold, copper and silver inside. This trend, called "urban mining", is even more profitable in the current market where precious metals are trading close to their all-time high. For example, a ton of ore from a gold mine gives about 5 grams of gold,… » 4/28/08 7:00pm 4/28/08 7:00pm