Rock on scale

Weighed rock on display at the facility, next to hard hats worn by journalists on the tour.

Currently there's not enough rare earth to meet demand, Molycorp said. Some 33,000 tons of rare earth elements are currently produced in China, and the world has an appetite for at least 55,000 tons a year.

April 22, 2011 4:00 AM PDT

Photo by: James Martin/CNET

| Caption by: James Martin

 

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