Jonathan Brooks Clem

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.

The Lubrizol Corp. develops and produces chemical additives for automotive and industrial lubricants. Its business segments are Lubrizol Additives, Lubrizol Advanced Materials, and Lubrizol Oilfield Solutions. The company was founded by Vincent Smith, Kent Smith, Tommy James and Kelvin Smith in 1928 and is headquartered in Wickliffe, OH.

Case Western Reserve University provides educational services. It offers a variety of undergraduate degree courses and graduate and professional options such as arts and sciences, dentistry, engineering, law, management, medicine, nursing, social work, and more. The firm also offers dual-degree programs. The company was founded in 1826 and is headquartered in Cleveland, OH.