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US Gypsum DL535E 112 at Plaster City, California on 6 March 2024. (Charles Freericks photo)
American Aggregates
Becker Sand & Gravel
Canadian Gypsum
CEMEX
Ideal Cement
LaFarge Cement
Lehigh Portland Cement
LHoist
Material Service
Michigan Limestone
St. Lawrence Cement
Texas Crushed Stone
US Gypsum
Vulcan Materials
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