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Claysburg PA History

Standard Refractories was built in 1914 in Claysburg and was later bought by General Refractories Co. The plant produced silica brick. The Sproul plant was built by General Refractories in 1911. Silica Bricks were made mostly from the ganister or silica rock from Dunnings or Sproul Mountain.…

Utah Refractories Silica Brick Manufacturing

Utah Refractories Corp. carries on the seventy plus year manufacturing tradition of the Lehi, Utah plant formerly under General Refractories, and A. P. Green. Our silica bricks are supplied worldwide to primary glass producers and coke ovens. We are the manufacturer of the time-honored Gen-Sil ® and GREFCO ® brands.…