Refractory Minerals Co., Inc.

Operational for more than 150 years, Ryerson is one of the leading distributors and processors of metals in North America. The company processes a range of metals that includes stainless steel, brass and copper, aluminum and nickel alloys. It also provides building products and fabrication services to its clients. Ryerson distributes stainless steel products in several gauges, widths, lengths, sizes and finishes. It additionally offers saw and laser cutting, leveling, blanking, precision grinding, slitting, shearing and polishing services. The company provides ColorKlad, AlumaKlad and copper roofing building products. Headquartered in Chicago, the company operates various service centers throughout the United States and Canada. Ryerson maintains one of its locations in Newark, Del.

Founded in 1965, APEX Piping Systems Inc. is one of the leaders in process pipe and specialty metal fabrications, including American Society of Mechanical Engineers (ASME) code work. The company serves the chemical, petrochemical, pharmaceutical, food and beverage, pulp and paper, power, and marine industries. APEX Piping Systems Inc. offers a wide array of product lines, including jacketed piping systems, pipe coils, skid mounted modular process systems and ASME code pressure vessels. In addition, it also provides mechanical, boiler maintenance and repair services.

Founded in 1945, Spitz is one of the world's leading projection dome suppliers with over 1,200 installations. Its architectural services include engineering and the complete installation of custom spherical structures. Spitz specializes in planetarium theaters and architectural domes. Its projects include museums, schools, theme parks, simulators, casinos and diverse architectural structures. Spitz provides display systems and automation, lighting, audio and engineering services. Its clients include The Griffith Observatory, Disney, Imax, Zeiss, Universal Studios and Volkswagen. Spitz s projects include the Tampa Port Authority, Lucent Visitors Center, Sea World, Custom Atrium Ceiling, Mohegan Sun Casino, Spacepark Bremen and Denver Museum of Nature and Science.