Rio Tinto Borax Mine
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The Rio Tinto Boron Mine in Boron, California is California's largest open-pit mine and the largest borax mine in the world, producing nearly half the world's borates. Ore reserves are sufficient for
Rio Tinto Borax mine and plant, 2012
Rio Tinto Borax mine from ISS, 2013
Borax crystals, Boron Mine. Scale is one inch, ruled at one cm.
Pacific Coast Borax Company
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The Pacific Coast Borax Company was a United States mining company founded in 1890 by the American borax magnate Francis Smith, the "Borax King".
Rio Tinto Borax Mine
…of what he believed to be gypsum. Further testing revealed it was the colemanite form of borax. Francis Marion "Borax" Smith bought the claim for his Pacific Coast Borax Company. Mining at the site by shafts began in the 1920s. Pacific Coast Borax later became U.S. Borax, which subsequently opened the current open-pit mine in…
A 20-Mule Team Wagon, in Death Valley, California
Westend chemical plant engine, on display at Knott's Berry Farm.