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Office Locations

Americas Office

Rio Tinto | U.S. Borax
200 E. Randolph
Suite 7100
Chicago, IL 60601 USA
+1 773 270 6500

Asia-Pacific

Rio Tinto
12 Marina Boulevard
#20-1, Marina Bay Financial Centre, Tower 3
018982
Singapore
+65 6679 9000

EIMEA

Rio Tinto Borates
Mergenthalerallee 77
65760 Eschborn
Germany
+49 6196 96000

U.S. Operations

Boron
U.S. Borax
14486 Borax Road
Boron, CA 93516 USA
+1 760 762 7000
Learn more ›
Wilmington
U.S. Borax
300 Falcon Street
Wilmington, CA 90744 USA
+1 310 522 5310
Learn more ›
Borax Visitor Center

14486 Borax Road
Boron, CA 93516 USA
visitor.center@riotinto.com
+1 760 762 7588
Learn more ›

Employment Verification
Are you an external party that needs to verify someone is employed by U.S. Borax?
 
Please call +1 801 363 4357

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 500 customers with more than 1,700 delivery locations globally. We supply 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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