Name: Searles Lake Borax Discovery
Site Number: #774
Date Visited: 09/05/2016
Other Designation: None
Plaque Status: State Marker
Location: 82841-82847 Center St., Trona, CA 93562
Description: John Searles discovered borax on the nearby surface of Searles Lake in 1862. With his brother Dennis, he formed the San Bernardino Borax Mining Company in 1873 and operated it until 1897. The chemicals in Searles Lake-borax, potash, soda ash, salt cake, and lithium-were deposited here by the runoff waters from melting ice-age glaciers, John Searles’ discovery has proved to be the world’s richest chemical storehouse, containing half the natural elements known to man.