Workers stand at a rare earth processing plant, owned by Belgian chemicals group Solvay, located in La Rochelle, France in this undated handout picture. Solvay/Handout via REUTERS/ File Photo
Workers stand at a rare earth processing plant, owned by Belgian chemicals group Solvay, located in La Rochelle, France in this undated handout picture. Solvay/Handout via REUTERS/ File Photo