Rio Tinto Borax Mine

Ore reserves are sufficient for current economic production through early 2040's.

It is operated by the Borax division of the Rio Tinto Group.

Further testing revealed it was the colemanite form of borax.

U.S. Borax was later acquired by Rio Tinto Group, which continues to operate the mine.

A pilot project to produce lithium by sifting through mining waste began in 2019.