Arcosa Specialty Materials is the result of a long and successful history of doing one thing and one thing only. Treating people right. Our customers, our employees, our partners, and vendors. We believe when you take care of the people that matter most, everything else will take care of itself. Our roots go back to 1955 when the Harrison Gypsum Company originally began as a small family operation supplying gypsum to the family farm and neighbors. Originally named the Cement Gypsum Company, Harrison Mine No. 1 was opened near Cement, OK, and underwent the name change to Harrison Gypsum Company in 1956. Over the years the company developed the mining business by supplying raw gypsum rock to nearby manufacturers of Portland cement. As the Read more