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Industrial Minerals and Uranium Section
For information: contact Robert W. Gregory
Email: bgregory@uwyo.edu
Phone: (307) 766-2286 Ext. 237
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IM&U Gypsum Page
Revised 03/11/2005
Red Mountain gypsum quarry southwest of Laramie,
Wyoming. The gypsum is the lower wall in shadow and the white layers in the wall
above. The host unit is the Triassic Chugwater Formation. Photo by Ray E.
Harris, 1985
Gypsum is mined at three locations in Wyoming. Mountain
Cement mines small amounts of gypsum near Laramie for use as a retardant in
cement. Two plants in the Bighorn Basin in northwestern Wyoming mine gypsum and
processes it into wallboard at nearby plants. The gypsum wallboard plants in
Wyoming have been operating at capacity since 1995. Rapid growth in construction
in the Wyoming market areas of the Colorado Front Range, Utah Wasatch Front, and
the Pacific Northwest have increased the demand for construction materials
including wallboard. Gypsum production declined in 2000 due to reduced demand, corporate restructuring, and
plant maintenance. Celotex sold its gypsum mining and wallboard production to British Paper Board Ltd. (BPB), and is now
known as BPB-Celotex. Wyoming has large gypsum resources capable of supporting additional production.
For more information about this industrial mineral, visit the following company sites:
BPB-Celotex Corporation
(http://www.us.bpb-na.com/index2.html)
Georgia-Pacific Corporation
(http://www.gp.com/gypsum/)
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Email: wsgs-info@uwyo.edu