H.I.G. Capital portfolio company ACG Materials has acquired Art Wilson Company. Founded in the 1950s, AWC mines, processes and markets anhydrite, gypsum and limestone products used in agricultural, industrial and commercial applications. The company operates across the U.S. states of Nevada, California, Washington, Oregon and Idaho. Founded in 1955, ACG is a producer and processor of high-quality minerals and aggregates including gypsum, limestone, sand, gravel and downstream food, pharmaceutical and plaster products. H.I.G. has backed the company since late 2012. The transaction marks the second add-on deal for ACG of 2015.