Irving Materials, Inc. (IMI) digs deep for business. One of the largest privately held concrete suppliers, Irving Materials, Inc. produces stone, sand, gravel, and concrete materials for customers in Alabama, Illinois, Indiana, Ohio, Kentucky, and Tennessee. It operates four regional operations centers and more than 150 ready-mix plants, about 15 asphalt plants, and 10 stone quarries. IMI also sells used equipment ranging from haul trucks and fleet cars to portable crushing equipment and other heavy equipment. C. C. "Skunk" Irving founded Irving Materials, Inc. in 1946. It is employee owned.