Raw Japan

Slices of Japanese business, politics and life

Mining gold from sewage

January 30, 2009

Gold barsJapan has discovered a new source of mineral wealth — sewage.

A sewage treatment plant in central Japan has recorded a higher gold yield from sludge than can be found at some of the world’s best mines.

Nagano, in the mountains northwest of Tokyo, is home to some precision equipment manufacturers that use gold in their work and a local official says the yellow metal is turning up in the waste.

Some 1,890 grammes of gold per tonne of incinerated-sludge ash has been recovered — far higher than the gold content at Japan’s Hishikari goldmine where about 20-40 grammes of the precious metal is found per tonne of ore.

So far the local authorities have found about $56,000 worth of gold and they think they can triple that by the end of March.

Some gold industry officials expect prices this year to top the all-time high above $1,030 per ounce hit last year, as investors worry about the global financial crisis.

Photo credit: REUTERS/Yuriko Nakao


Why would such things happen only in the rich nations? Why not in the sewage from the slums of Mumbai? :)

Posted by mitchell | Report as abusive

i need info on gold not sewage.

Posted by jenna | Report as abusive

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