Hirschfeld Industries is into heavy metal. The company, operating through subsidiaries (Carolina Steel Group, Consteel Technical Services, and Hirschfeld Steel), fabricates and provides structural steel for transportation, infrastructure, industrial, commercial construction, and power projects. The group produces more than 10,000 tons of the alloy each year and its products include girders, trusses, beams, mill-rolled shapes, and other structural steel. Hirschfeld has provided steel for projects such as Reliant Stadium in Houston, the Anaheim Convention Center in California, McCarran Airport in Las Vegas, and the J. C. Penney corporate headquarters in Plano, Texas. Hirschfeld filed an IPO in 2009.

PremierGarage Systems, LLC wants its customers' garages to be as useful and organized as other rooms in the house. The company installs floor coatings, cabinets, organizers, and other storage systems in residential garages, as well as commercial garages. PremierGarage's branded products include PremierGarage storage products, PremierGarage Cabinetry, and PremierOne Floor Coating, a proprietary hybrid polymer coating. Based in Phoenix, the company has about 100 franchised locations around the US and Canada and operates manufacturing facilities in Phoenix and Atlanta. The company was founded in 1999 by CEO Mark Loberg.

HDR has left its mark on the US. HDR is an architecture, engineering, and consulting firm that specializes in projects including bridges, water- and wastewater-treatment plants, and hospitals. HDR also provides mechanical and plumbing services, construction and project management, and utilities planning. The group has completed projects throughout the US and in some 60 countries abroad and has more than 185 locations around the world. The employee-owned company was founded as Henningson Engineering in 1917 to build municipal plants in the rural Midwest.

American Infrastructure provides balance and structure. Through subsidiaries Allan A. Myers and American Infrastructure-Virginia, the firm provides heavy civil construction services for projects in the Mid-Atlantic. It builds and reconstructs highways, water treatment plants, medical facilities, and shopping centers, and offers site development for homebuilders. Its Independence Construction Materials (ICM) subsidiary supplies aggregates, asphalt, and ready-mixed concrete to its construction companies. The family-run business was established in 1939 as Allan A. Myers and Son, a local hauling company in the suburbs of Philadelphia.

Brock White Company was founded in 1954 by George White and Wayne Brock, two former chemical engineering classmates at the University of Minnesota. Contractors in the Upper Midwest and Prairie regions of Canada can go to Brock White Company if they need specialty construction products including brick, stone, specialty chemicals, waterproofing materials, and masonry accessories. Its Canadian locations also supply mechanical insulation and roofing products. The distribution company operates from some 20 locations in the US and Canada, as well as through catalogs and the Internet. Customers include commercial, residential, road and bridge, and erosion control construction companies.

Civil and environmental engineering firm Bryan A. Stirrat & Associates (BAS) specializes in municipal solid waste and hazardous waste management. The company helps customers with landfill siting and design; it also works on permitting and planning of landfill expansions and provides construction and operations support. Hazardous waste projects have included assessment and remediation on sites throughout the western US. The company operates from offices in California and Arizona. Leading consulting engineering firm Tetra Tech acquired BAS in 2009.

Rudolph and Sletten, Inc., is a mainstay of the California construction scene, especially Silicon Valley. It has built corporate campuses for Apple, Microsoft, and Sun Microsystems, as well as Lucasfilm's Skywalker Ranch production facility. Rudolph and Sletten is one of the US' largest general building contractors, with site selection, design/build, and construction management capabilities. Key projects also include biotech labs, hospitals, and schools. Onslow "Rudy" Rudolph founded the company in 1959 and was joined by partner Kenneth Sletten in 1962. Rudolph and Sletten is a subsidiary of Tutor Perini Corporation.

Rocky Top Building Products produces pressure-treated lumber and engineered wood for residential, commercial, agricultural, industrial, marine, and recreational applications. The company's products include dimension lumber, decking boards, railing, beams, lattice, and related fastening systems. The company operates facilities in Maryland, Pennsylvania, and Virginia, and sells its products to professional builders and do-it-yourselfers through dealers in about a dozen northeastern and mid-Atlantic states. A wholly owned subsidiary of the Franklin Group, Rocky Top was established in 1977.

MW Builders, a subsidiary of MMC Corp., provides construction management and general contracting services in the US. The group focuses on commercial construction projects for sectors including entertainment, higher education, hospitality, health care, and senior living. MW Builders was incorporated in 1971. The employee-owned company operates from offices in Overland Park, Kansas; and Salado, Texas.

A and L, Inc. company provides construction management, site development, and demolition services for such projects as airports, bridges, dams, roads, tunnels, manufacturing facilities, railways, toll plazas, and water treatment plants. Clients run the gamut from businesses to school districts to government agencies and include CONSOL Energy, US Steel, Volkswagen, Westinghouse, and the Pittsburgh Zoo. It largest contracts are for the construction or rehabilitation of highways and public transportation systems. A & L, which was founded in 1963 by president Louis Ruscitto, operates offices in Illinois, New York, and Pennsylvania.

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