William G. Pryor

Oglebay Norton Co. LLC engages in mining, processing, transporting and marketing industrial minerals and aggregates. It provides aggregates and industrial minerals for applications in the building materials, environmental, energy and industrial markets. The company operates in three segments: Great Lakes Minerals, Global Stone and Performance Minerals. The Great Lakes Minerals segment mines and distributes limestone from facilities located in northern Michigan. The Global Stone segment supplies lime, crushed and ground limestone, construction aggregates and chemical limestone in the Great Lakes region. It's products are used as a filler in building materials, waste water treatment and soil stabilization and as an aggregate for construction of highways, shopping centers, hospitals and schools. Performance Minerals segment mines and processes industrial sands. The company was founded in 1854 and is headquartered in Cleveland, OH.

Part of Sumitomo Heavy Industries, Ltd., Van Dorn Demag Corp. is a company that distributes molding machines. The company is based in Strongsville, OH. Van Dorn Demag was acquired by Sumitomo Heavy Industries, Ltd. from MPM Holding GmbH on March 04, 2008.

Part of Crown Holdings, Inc., Van Dorn Co. is a company that specializes in containers and molding machines. The company is based in Cleveland, OH. Van Dorn was acquired by Crown Cork & Seal Co., Inc. on April 19, 1993 for $175 million.