Arcosa Specialty Materials Employee Directory
MiningOklahoma, United States201-500 Employees
Arcosa Specialty Materials operates in the mining sector with a focus on gypsum and related rock materials, based in Norman, Oklahoma. The business traces its origins to Harrison Gypsum Company, founded in 1955 to supply gypsum to a local farm network and neighboring customers, later expanding to provide raw gypsum rock to Portland cement manufacturers as its operations grew. A 1994 milestone noted Harrison Gypsum’s Mine No. 2 as the largest single gypsum mine in the United States, and reserves are reported to exceed a quarter of a billion tons. In 2015 the company rebranded from Harrison Gypsum to ACG Materials, reflecting its evolution, and the historical lineage continues within Arcosa Specialty Materials. A recent development in the wider Arcosa organization was an October 2024 acquisition that added five hard rock quarries, twelve asphalt plants, and three recycled aggregate sites, signaling expanded capacity in construction materials.
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