Rio Tinto Minerals
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Marketing Programs & Services
200 E Randolph St, Chicago, IL 60601
773-270-6500
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Today: 9:00 am - 5:00 pm
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- General Info
- Rio Tinto operates US Borax, California s largest open pit mine in Boron, Calif., one of the richest borate deposits on the planet. The company supplies nearly half the world s demand for refined borates, minerals essential to life and modern living. Borax traces its roots to California s Death Valley, where borate deposits were discovered in 1872. The 20-mule teams Borax used to haul ore out of the remote desert live on as a symbol of the company s commitment to innovation. Borax, a member of the Rio Tinto group, is acknowledged as a world leader in borate technology, research and development.
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TollFree: 800-325-0299
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