Michael J. Minkel

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 Carmeuse Holding SA, Oglebay Norton Specialty Minerals LLC produces and provides high quality specialty mineral products for use in the manufacture of a variety of industrial products. The company is based in Raleigh, NC.

Resilience Capital Partners LLC (Resilience Capital) is a private equity firm founded in 2001 by Bassem A. Mansour and Steven H. Rosen. The firm is headquartered in Cleveland, Ohio.