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Founded in 1931, High Steel Structures is one of the largest steel bridge manufacturers in the United States. It serves the domestic and foreign steel construction industries by specializing in fabricated plate girders utilized in power plants, civic centers, sports arenas, industrial complexes, and commercial and industrial buildings. The company has fabricated more than 6,000 bridges. It additionally provides solutions for emergency repairs, field operations and steel bridge designs. High Steel Structures operates sales, engineering, fabrication and transportation departments with access to computer systems. The company also maintains a fleet of equipment that can transport overweight loads. It additionally provides various online tools, such as project pricing and shipping calculators. The company maintains a location in Lancaster, Pa. High Steel Structures is a part of High Companies, which offers a range of construction, manufacturing, real estate and business services.

Founded in 1915, Gannett Fleming is an international planning, design and construction management firm. The company provides full-service, multidisciplinary engineering services and technical expertise for the transportation, institutional, commercial, environmental, information technology, and water and wastewater industries. It offers application design and development and graphics and multimedia design services. Gannett Fleming also provides environmental management, site development and strategic planning solutions. The company offers dam investigation and inspection and emergency response planning services. It provides services for roads, highways, bridges, and transit and rail systems. Gannett Fleming operates more than 50 offices throughout the United States and Canada. Gannett Fleming employs nearly 1,900 professionals. The company has achieved ISO 9001:2000 certification.

The Sheridan Press is dedicated to the print and communications needs of the scientific, technical, medical and scholarly journal publishing communities. The company offers comprehensive front-end services, such as composition, editorial services, electronic deliverables, as well as printing and binding, distribution, reprints, back-issue fulfillment and warehousing services. Sheridan Press is one of eight printing companies that make up The Sheridan Group. The other companies in the Sheridan Group are Sheridan Reprints, Sheridan Digital Print, Dartmouth Journal Services, Dartmouth Printing Company, United Litho, Sheridan Books and Dingley Press. Founded in 1915, the company employs more than 450 people at its headquarters in Hanover, Pa.