California-basedanogadzira simendi Brimstone anorongakugadzira US smelting-giredhi alumina panosvika 2030. Nokudaro kuderedza kutsamira kweUS kune kunze kwenyika alumina nebauxite. Sechikamu chemaitiro ayo ekugadzira simende, portland simende uye yekubatsira simende tious (SCM) inogadzirwawo sezvigadzirwa.

Brimstone $8.7 miriyoni ye$189 miriyoni mumubatanidzwa wemari yemupiro kubva kuDhipatimendi reMagetsi. Ichatanga mashandiro ekuyedza muna 2025, uye inoronga kuvhura madhora mazana matatu nemakumi manomwe nemaserecommercial demonstration plant in2030, simbisa iyo yepamba alumina yekugovera cheni uye kugadzira mabasa.