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The 10 biggest silver mines in the world. Mexico, the world's biggest silver producing country, and Poland host three each of the world's 10 biggest silver mines. Bolivia, Turkey, Peru and Australia host the remaining four. Mining-technology.com profiles the 10 biggest silver mines in the world, based on contained silver reserves.
Global Borate Supplier of Choice. Borax operates California's largest open pit mine in Boron, California-one of the richest borate deposits on the planet.While boron is present everywhere in the environment, substantial deposits of borates are relatively rare.orax traces its roots to California's Death Valley, where borate deposits were discovered in 1872. The twenty mule teams Borax used to haul ore out of the remote desert live on as a symbol of the company's commitment to innovation.