California-basedumenzi wesamente izicwangciso zeBrimstoneukuvelisa i-alumina ye-smelting-grade yase-US ngo-2030. Ngaloo ndlela ukunciphisa ukuxhomekeka kwe-US kwi-alumina kunye ne-bauxite engaphandle. Njengenxalenye yenkqubo yokwenziwa kwesamente yokususa ikhabhoni, isamente ye-portland kunye ne-axiliary cementing tious (SCM) nazo ziveliswa njengemveliso.

I-Brimstone i-$ 8.7 yezigidi ze-189 yezigidi zeedola kwiminikelo yeendleko ze-federal evela kwiSebe lezaMandla. Iza kuqala imisebenzi yovavanyo ngo-2025, kwaye iceba ukuvula i-378 yezigidi zeedolaiplanti yokubonisa urhwebo kwiNgowama-2030, ukuqinisa ikhonkco lokubonelela nge-alumina yasekhaya kunye nokudala imisebenzi.