Articles from Brimstone
Brimstone, a U.S.-based innovator in alumina and other industrial materials, and Century Aluminum, the largest American primary aluminum producer, today announced a memorandum of understanding (MOU) that would establish a domestic “mine to metal” supply chain for primary aluminum production. Under the agreement, Brimstone will supply Century with significant volumes of alumina—the key ingredient in aluminum—from its forthcoming plant, underscoring a shared commitment to strengthening national security through a reliable, U.S.-based aluminum supply chain using American feedstock. The agreement adds momentum to Brimstone’s industrial-scale plant, anchoring the first aluminum supply chain to be fully sourced and produced in the U.S. The MOU reinforces domestic supply chain resilience and reduces reliance on overseas supplies, which are currently vulnerable to political, military, or other disruptions.
By Brimstone · Via Business Wire · June 24, 2026
After years of developing its patented Rock Refinery® in stealth, Brimstone, a U.S. industrial innovator, today announced plans to co-produce steel, aluminum, magnesium, titanium, and other critical minerals, in addition to its previously announced products, portland cement, smelter grade alumina, and supplementary cementitious materials (SCM). Brimstone’s breakthrough creates an efficient, cost-effective pathway to producing the most consumed materials on Earth using the most abundant rocks on Earth as feedstock—ushering in the next generation of industrial refining.
By Brimstone · Via Business Wire · December 10, 2025
Brimstone, a U.S. industrial innovator pioneering a patented refining technology, today announced the appointment of James “Tim” Rens as the company’s Chief Financial Officer (CFO).
By Brimstone · Via Business Wire · October 30, 2025
Amazon (NASDAQ: AMZN) and Brimstone today announced successful results from tests of Brimstone's lower-carbon Ordinary Portland Cement (OPC) for use in concrete construction with plans for more comprehensive testing to be conducted in 2025 and 2026. On the strength of the initial testing outcomes, Amazon has signed a commercial agreement to reserve annual volumes of Brimstone’s OPC and supplementary cementitious materials (SCM) from its forthcoming plant.
By Brimstone · Via Business Wire · August 5, 2025
Brimstone, a U.S. leader in industrial innovation, announced it has signed a letter of intent with Oklahoma’s Dolese Bros. Co., to supply materials for its planned Rock Refinery—a commercial-scale plant producing portland cement, supplementary cementitious materials (SCM), and smelter grade alumina, the essential material for producing aluminum. Brimstone selected Dolese Bros. Co. following a competitive selection process that evaluated over 23,000 quarries across the United States.
By Brimstone · Via Business Wire · June 30, 2025

Brimstone, a U.S. leader in industrial innovation, announced today that its deeply decarbonized cement manufacturing process will also produce smelter grade alumina—marking a major industrial milestone in the United States with direct implications for national security, domestic supply chains, and the economy. The Brimstone plant could represent the first new, domestic source of smelter grade alumina in a generation, entering a market currently led by China.
By Brimstone · Via Business Wire · January 8, 2025

The Department of Energy (DOE) Office of Clean Energy Demonstrations (OCED) today announced that Brimstone, a leader in industrial decarbonization, was selected to negotiate a $189 million federal award to finance the construction of the first commercial-scale plant deploying Brimstone's deeply decarbonized process for producing cement.
By Brimstone · Via Business Wire · March 25, 2024

Brimstone, a leader in industrial decarbonization, has received third-party certification that its cement meets or exceeds ASTM C150 standards for ordinary portland cement, becoming the first ultra-low carbon, carbon-neutral or carbon-negative cement to meet this critical and universally accepted industry requirement. This achievement validates that the cement Brimstone produces is ordinary portland cement, the type of cement used in virtually all construction today.
By Brimstone · Via Business Wire · July 13, 2023

Brimstone makes Ordinary Portland Cement, chemically and physically identical to conventionally manufactured cement, but without releasing CO2. At scale, Brimstone’s breakthrough will produce cement at or below market prices, solving the problems of both emissions and scarcity of raw materials, and without increasing cost or risk for customers. At scale, Brimstone’s process will be able to supply organizations and governments that want to construct new buildings or replace aging infrastructure but want to use tried and true building materials at an affordable price while also sequestering carbon.
By Brimstone · Via Business Wire · April 28, 2022