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U.S. Borax becomes first open pit mine to transition to renewable diesel
Rio Tinto has successfully completed the full transition of its heavy machinery from fossil diesel to renewable diesel at its Boron, California operation, mak... Learn More
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Pozzolans from Mine Waste to Decarbonize Concrete
CR Minerals Company, LLC has reached an agreement with Rio Tinto on the production of pozzolans from waste materials at the U.S. Borax facility in Boron, CA. Read More

A new revolutionary and environmentally conscious approach to producing lithium may be key to meeting the soaring demand for this critical mineral. Our California lithium operations at our Boron site has developed a breakthrough process that enables lithium production from existing mine waste rock. Learn more  ›

U.S. Borax, part of Rio Tinto, is a global leader in the supply and science of borates—naturally-occurring minerals containing boron and other elements. We are 1,000 people serving 650 customers with more than 1,800 delivery locations globally. We supply around 30% of the world’s need for refined borates from our world-class mine in Boron, California, about 100 miles northeast of Los Angeles.  Learn more about Rio Tinto.

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