The United States accounted for only 3 percent of China’s natural gas imports last year. Those purchases could now dry up entirely in the trade war.

MP Materials, which owns the only U.S. rare earths mine, said on Thursday it has stopped shipping the critical minerals to China for processing after Beijing boosted import tariffs to 125% in response to U.

The U.S.'s only rare earths mineral mine has ceased all shipments of rare earth concentrate to China stating materials under 125% tariffs is not commercially rational.