Marshfield just adores portals. Marshfield DoorSystems is a leading maker of commercial architectural wood doors in the US. The company sells its door and accessory products to the commercial construction industry nationwide. Marshfield DoorSystems offers customers more than 3 million possible made-to-order combinations of doors. The company's history dates back to Axel Hatteberg's establishment of Hatteberg Veneer Company in 1890. Before it was bought by Marshfield DoorSystems in 2000, the company was Weyerhaeuser's door division. Private equity firm Wind Point Partners and Marshfield DoorSystems' management own the manufacturer.

TREVI-Finanziaria Industriale (Trevi) runs its business from the ground down. The company provides soil foundation engineering services for civil engineering and construction projects. Projects have included a runway underpass at JFK International Airport, work on the Leaning Tower of Pisa to reduce its tilt, and foundation work for Milan's subway. It is also involved in deep excavation support, pre-tunneling technology, hydraulic drilling rigs, and underground parking garages; its Soilmec unit makes soil engineering and drilling equipment. Chairman Davide Trevisani and his family controls the company, which he founded in 1957.

Sharps Compliance Corp. provides medical waste disposal solutions in the United States. It offers Sharps Disposal by Mail System to dispose medical waste, such as hypodermic needles and lancets; RxTakeAway, which facilitates the disposal of unused pharmaceuticals and medications; and SharpsMWMS, a medical waste management system to collect, store, and dispose medical and pharmaceutical waste. The company’s solutions include Sharps Rx Recovery and Reporting System, which helps in the collection, storage, audit, treatment, and documentation of unused medications; Pitch-It IV Poles for gravity-fed or pump-administered infusions; Trip LesSystem for return and/or disposal of waste; and Sharps’ asset return boxes that provide delivery and retrieval of expensive equipment. It also offers Sharps Secure Needle Disposal System for needle collection and disposal by mail; Sharps SureTemp Tote, a disposable cooler to maintain a safe range for temperature-sensitive materials; IsoWash Linen Recovery System for safe handling of linens contaminated with blood, bodily fluids, and other biohazards; and Biohazard Spill Clean-Up Kit and Disposal System for cleanup and disposal by mail of bio-hazardous spill waste and materials. In addition, the company provides online services, including SharpsTracer, an imaging and tracking program for tracking and certifying the transportation and disposal of regulated medical waste; and AssetTracer to manage capital assets. Further, it offers environmental services, such as the destruction and disposal of medical sharps waste, legal/confidential documents, pharmaceutical products, and non-hazardous industrial waste; and consulting services, which include analysis of legal and regulatory implications of present waste handling practices. It primarily serves healthcare, government, retail, pharmaceutical manufacturer, professional, hospitality, industrial, and agriculture markets. The company was founded in 1992 and is based in Houston, Texas.

Butler Manufacturing, maker of pre-engineered buildings, structural systems, and roof and wall systems for nonresidential construction. A subsidiary of Australia-based BlueScope Steel, Butler produces pre-engineered and custom-designed steel structures used in a range of projects, from offices to schools to shopping centers. Through its BUCON and Butler Heavy Structures units, the company provides general contracting services for large-scale projects. Butler also offers real estate development services. It distributes its products throughout North America.

Weekley Homes can do it. Doing business as David Weekley Homes, the company is one of the largest privately owned homebuilders in the US. It builds single-family detached homes ranging in size from about 1,500 to 5,000 sq. ft. Prices range from the low $100,000s to some $1.2 million. In 2009 Weekley Homes closed about 2,300 homes (about half the business it did in better years). The company builds from hundreds of floor plans and offers a variety of custom options and upgrades. David Weekley homes are found in planned communities in the West, Southeast, and Mid-Atlantic. Chairman and owner David Weekley founded the company in 1976.

Boh Bros. builds bridges in the Big Easy and beyond. One of the top industrial and heavy construction contractors in the Southeast, Boh Bros. Construction has been building in and around New Orleans for about a century. The firm was created in 1909 by Arthur Boh, whose brother Henry joined the company in 1913 to give it the "Bros." name. Boh Bros. became known for its pile-driving and underground work. The company has expanded both geographically and its services, providing asphalt and concrete paving, mechanical and industrial piping, marine construction, highway and railroad construction, equipment sales, and excavation and site preparation in nine states. The Boh family and key employees own the firm.

Italcementi is the colossus of roads. Italcementi S.p.A. produces cement, ready-mix concrete, aggregates, and related construction materials through more than two dozen subsidiaries on four continents. European customers dominate sales, but Italcementi also does business in North America (through Essroc), and has seen sales in other markets coming on strong in recent years. Italcementi's cement division accounts for almost two-thirds of total sales and produces some 70 million tons annually; concrete and aggregates account for more than 30%. Its international operations include about 60 cement plants, 15 grinding centers, 130 quarries, and 600 concrete plants. Italmobiliare owns some 59% of Italcementi.

Wolcott Architecture Interiors provides architectural planning and interior design services through its office in Culver City, California. The company's clients have included the Elton John Foundation, Saban Entertainment, Wyle Laboratories, the Annenberg Foundation, Volkswagen Group of America, and many more. Principal John Wolcott founded the company in 1975.

RMJM designs big. As one of the world's largest architecture firms, with offices in some 16 cities throughout North America, Asia, the Middle East, and Europe, RMJM draws blueprints for an array of projects. It serves a wide range of clients in the educational, commercial, industrial, leisure, retail, residential, scientific, health care, and public sectors. Major projects span the globe and include the Dubai Convention Centre, The Scottish Parliament, and the Synygy World Headquarters. In 2007 RMJM merged with the established US-based Hillier Group. The deal brought RMJM a well-known firm in North America, where it lacked a presence. The US arm dropped the Hillier name in 2008.

Dimeo Construction Company has built up its reputation in New England. The company provides general contracting, design/build, and construction management services from offices in Connecticut, Massachusetts, and Rhode Island. The builder focuses on commercial, education, health care, industrial, and retail projects such as schools, college residential halls, hospitals, and shopping centers. It also has worked on renovation projects, including The Mark Twain House & Museum and the Ocean House. Dimeo's green side has emerged and it has built eco-friendly projects for IKEA, and several public schools. The family-owned company was established in 1930 by Joseph Dimeo.

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