Valles Mines, Missouri, U S A
Founded in 1749 by Francois Valle years before he became Commandante of the Fort of Sainte Genevieve and The King of Spain made him Don Francois Valle for saving their Fort San Carlos (now St. Louis).
270 years later as The Valle Mining Company, his 4000+ acre property every year absorbs 21,000 tons of carbon dioxide and puts out 14,000 tons of oxygen, enough to meet the needs of 63,000 people. [USDA Forest Facts]
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The Revolution has Come - Fluoroboric Acid

But Where Did It Go?

In 2010 Doe Run announced it could smelt ore safely, a major breakthrough. Then... nothing happened. Headline:The Herculaneum Smelter Reopens! NOT. This should have been a miracle. Instead, [crickets].

"... replacing traditional, high-temperature lead smelting with a proprietary hydrometallurgical process. The results are unparalleled: greater than 98 percent metal recovery with minimal environmental impact..."

See also: Recycling Today