Hanafee Bros. Sawmill specializes in red oak and white oak lumber products. It also produces lumber from a broad range of other hardwood species, including ash, sycamore, cottonwood, elm, poplar, sassafras, walnut, hackberry, sap gum, and more. The company sells its products to furniture and cabinet makers, flooring manufacturers, and makers of stair parts, moldings, and other items. Export clients comprise more than half of its business. Hanafee Bros. Sawmill's hardwood lumber operations, which have been family-owned since 1906, operates from the Obion River valley in northwestern Tennessee. President Donald Hanafee Jr. owns and operates the company.

Kolbe & Kolbe Millwork. Instead, workers are busy making wooden and aluminum-clad windows and doors in a variety of styles. The family-owned company also includes Kolbe Vinyl Windows & Doors and Pointe Five, which offer custom-made and Craftsman-style doors and garden windows. The company provides installation and maintenance through its ServicePro unit. Sales and distribution of Kolbe & Kolbe products is handled by K-K Sales and K-K Way. Kolbe & Kolbe sells its products to distributors and dealers throughout the US and in Canada, China, Ireland, the Netherlands, South Korea, and the UK. The building products company is led by CEO Judith Kolbe Gorski.

Environmental engineering and consulting firm SC&A provides emergency response and homeland security services, environmental management, information and communication, waste remediation, and risk assessment services through its offices in New York, New Jersey, Missouri, and Virginia. The company works mainly for agencies of the US government (including the Department of Defense, the Department of Energy, and the Department of Homeland Security); other clients have included Boeing and General Electric. Company chairman Sanford Cohen is the SC in SC&A; his associates are the A. The company was founded in 1981.

Dukane Precast makes precast and prestressed concrete building components including flat panels, structural and decorative columns, spandrels, and beams in a variety of finishes. Its wall system division makes precast concrete floor and wall panels for residential and commercial construction. Dukane's products are touted as being energy efficient and weather-proof, with its walls being able to sustain tornado-force winds. Dukane also operates a delivery fleet and offers engineering design and erection services. Customers include DeVry, Carson Pirie Scott, and Medieval Times.

Dycom Industries for construction and engineering assistance. Operating through more than 30 subsidiaries, the company primarily designs, builds, and maintains coaxial, copper, and fiber-optic cable systems for local and long-distance phone companies and cable television operators. Dycom also provides wiring services for businesses and government agencies, installs and maintains electrical lines for utilities, and locates underground wires and pipelines for excavators. Dycom's operating subsidiaries are located in 18 states and Alberta, Canada. AT&T, Comcast, and Verizon Communications are its top customers, together accounting for nearly half of sales.

Henry Broan started the company in 1932 with the Motordor kitchen fan; today Broan-NuTone, a subsidiary of Nortek, is a leading maker of residential ventilation products. Offerings include ventilation and ceiling fans, heaters, indoor air quality products and trash compactors. Central vacuums, intercom systems, medicine cabinets, speakers, and doorbells are marketed under the NuTone name and range hoods are sold under the Best brand. The company's products available at retail stores such as Lowe's and The Home Depot, and also sold by distributors. It also makes private label products for GE, Sears, Whirlpool, and others.

Skidmore Owings & Merrill prefers a skyline view. One of the world's largest architectural and engineering firms, Skidmore Owings & Merrill (or SOM) has earned its fame with innovative modernist designs and such high-profile projects as the John Hancock Building and Willis Tower (formerly the Sears Tower). Its portfolio of services includes graphics, interior design, and urban design and planning. Transportation planning, infrastructure planning, environmental engineering, and geotechnical engineering are part of its structural and civil engineering offerings. The firm, which has completed projects in more than 40 countries, has offices in several major metropolitan US cities and in Europe and Asia.

Bergelectric provides design/build and design/assist services on projects that include office buildings, educational and other public-sector facilities, bioscience labs, entertainment complexes, hotels, data centers, hospitals, parking garages, water treatment plants, residential towers, and state-of-the-art prisons. Established in 1946, Bergelectric operates mainly in the western and southeastern US from about a dozen offices in Arizona, California, Colorado, Florida, Nevada, North Carolina, Texas, and Oregon.

U.S. GreenFiber makes cellulose building insulation from 85% recycled content including newsprint and other paper products, much of which is collected at community recycling centers. The company operates a dozen manufacturing plants; its products are sold to the US and Canadian construction industries (both residential and commercial) as well as the do-it-yourself market. Founded in 2000 and active in the US and Canada, GreenFiber is a joint venture between Louisiana-Pacific's GreenStone Industries and Casella Waste Systems' U.S. Fiber.

Harley Ellis Devereaux offers architecture, engineering, interior, landscaping, planning, preservation, and other services from about a half-dozen offices in the Chicago, Detroit, Los Angeles, and San Diego metro areas. The company serves corporations, health care firms, universities, and government agencies; it has done work for such clients as Comerica, General Motors, Stanford University, and Chicago's Lincoln Park Zoo. Companies affiliated with Harley Ellis Devereaux offer such specialized services as crime lab design, environmentally sustainable design consulting, and real estate services.

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