Established in 1982, U.S. Electrofused Minerals manufactures and distributes industrial minerals, serving as the U.S. representative for Brazil-based Elfusa. The Aliquippa company specializes in fused aluminum oxides and silicon carbides, while also producing mineral grains and powders for abrasive, refractory, blasting and other industrial uses. As part of the family-owned Curimbaba Group, USEM works within an integrated network that includes mineral extraction, electric-furnace production and ISO 9001-certified sister companies.
ISO 9001 Certified
U.S. Electrofused Minerals, Inc. (USEM)Established in 1982, U.S. Electrofused Minerals is the U.S. manufacturing representative for Elfusa and a member of the family-owned Curimbaba Group. From Aliquippa, the company manufactures and distributes industrial minerals for manufacturers that rely on abrasive and refractory materials, combining a local U.S. operation with Curimbaba’s international production network.BUFFALO, NY
Washington MillsFounded in 1868, family-owned Washington Mills manufactures abrasive grains and electro-fused mineral materials, including custom silicon carbide grains and powders, for industrial customers worldwide. From its Massachusetts headquarters, the company operates manufacturing facilities across North America and Europe and remains the oldest abrasive grain company in continuous operation in the United States. Washington Mills also develops custom fused materials in pilot furnaces and provides laboratory testing and recycling services alongside production.NIAGARA FALLS, NY
Allied Mineral ProductsFounded in 1961, Columbus-based Allied Mineral Products makes monolithic refractory ceramics and cast refractory shapes for furnaces and other high-temperature industrial equipment. The employee-owned company has grown from foundry roots into a global manufacturer serving more than 100 countries, with 14 manufacturing facilities in eight countries and a portfolio of more than 2,500 products. Its U.S. manufacturing facilities are ISO certified, and its research and engineering teams develop custom refractory solutions for demanding applications.COLUMBUS, OH
Seaforth Mineral & Ore Co., IncFounded in 1957, Seaforth Mineral & Ore supplies industrial minerals from international sources and processes fluorspar at its East Liverpool, Ohio plant for customers in the United States and Canada. Its history includes developing affiliated fluorspar mines in Mexico and expanding its Ohio processing facilities, while its laboratory provides chemical and physical analysis with each shipment. Seaforth stocks mineral materials for industrial customers and can arrange delivery within 24 hours.CLEVELAND, OH