If we can't challenge China, no one can, says only US rare .
May 31, 2019 · A laborer works at the site of a rare earth metals mine at Nancheng county, Jiangxi province in China. Credit: . the U.S. rare earths mine at Mountain Pass, Calif., would likely become the .Feb 23, 2012 · Molycorp's Mountain Pass Rare Earths Mine Almost Online . producer Molycorp, Inc. on Wednesday announced the sequential start-up of its 895-million worth new Project Phoenix rare earth .