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.