Ralf Schonfelder

Prince Minerals Ltd. processes and markets specialty minerals. Its products include barium carbonate, bauxite, calcium carbonates, colored sands, lithium products, manganese products and perlite ore. The company was founded on October 4, 2005 and is headquartered in Stoke-on-Trent, the United Kingdom.

American Gilsonite Co. engages in the mining and processing of hydrocarbon resin chemicals. Its products are used in the oil and gas drilling and other industrial applications. The firm sells its products to customers in primary markets including oil and gas, inks & paints, foundry and asphalt. The company was founded in 1946 and is headquartered in Houston, TX.

Vibrantz International Corp. engages in the process and supply of mineral products and additives to industrial and agricultural applications. The firm serves packaging, drying, milling, granulating, calcining, blending and mixing services together with research and development capabilities and also serves the brick, glass, agriculture, battery, chemical, foundry, refractory, steel, coal, oil and gas industries. The company was founded in 2003 and is headquartered in Houston, TX.

Accupac LLC engages in the provision of packaging services to cosmetic and pharmaceutical companies. It offers supply chain management, quality assurance services, contract manufacturing, and expert contract packaging. The company was founded by Anthony Heck in 1974 and is headquartered in Mainland, PA.