Japan’s Dirty Blue A Source of Glittering Gold

Gold mines exist in Japan, but today industrial sewage steals the precious metal spotlight. Sludge released from precision equipment factories in the central region of the island nation is said to contain more gold than any of Japan’s mines produce. Nagano Prefecture officials say they expect to profit 15 million yen (about $170k) from extracting the resource from sludge ash.

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Source: China Daily

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