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State of Our Business RSVP

Join us on Thursday, April 3, 2025 at the U.S. Borax Visitor Center, located on the top of the largest open pit mine in California to hear about the latest developments at Rio Tinto U.S. Borax.

While visiting, you will be able to:

  • Meet our senior leaders
  • Learn about our latest innovations and projects
  • Understand the importance of mining to modern living
  • Visit the bottom of the mine—and take a borates sample home

As you will be visiting an active mining site, please be sure to wear appropriate clothing: Jeans, a long-sleeved shirt, and steel-toed boots. If you do not have boots, wear closed-toe shoes to the event and be sure to notate your size on this form. We will provide boots for you.

Choose from three different mine tour start times. Total time is approximately 3 hours (including lunch).

Attendance at this event, by a public official, may require acceptance of a reportable gift.


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Are you bringing a guest?*

Would you like to participate in the mine tour?*

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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