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Brimstone a step closer to building first US alumina plant in 50+ years

Brimstone has signed a letter of intent with crushed stone and concrete producer Dolese Bros Co, Oklahoma, USA, to supply materials for its planned Rock Refinery, a commercial-scale plant producing Portland cement, supplementary cementitious materials (SCMs) and smelter grade alumina. Rock Refinery would represent the first new, domestic source of alumina in a generation, according to Businesswire. The supplier was selected following a selection process that evaluated over 23,000 quarries across the USA. 

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