Brimstone

ManufacturingCalifornia, United States51-200 Employees

Brimstone is a mid-sized manufacturing company based in Oakland, California. It operates the Brimstone Rock Refinery, a patented co-production process that converts a single, globally abundant rock into multiple materials. These materials include cement, supplementary cementitious materials, alumina, steel, aluminum, magnesium, titanium, and more, produced together in one integrated operation. The approach aims to streamline production by combining several materials in a single process, potentially transforming supply chains and enabling material abundance.

Its target markets include cement producers and other construction-material supply chains seeking integrated, cost-efficient production with simplified logistics. Based in Oakland, the company presents a single, patent-protected process that co-produces multiple essential materials from a single rock, positioning itself within the manufacturing sector.

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