Vent Products directs its energy into manufacturing air-control products and accessories for heating, ventilation, and air conditioning (HVAC) equipment. The company's offerings, which it creates with energy-saving purposes in mind, include standard and custom-designed dampers, shutters, louvers, and roof ventilators. Accessories include actuators, adapters, access doors, fan blades, jackshafts, roof curbs, and equipment supports.

Ruscilli Construction provides construction management, design/build, general contracting, and specialty contracting services. Its in-house teams use carpentry, concrete, masonry, ironwork, and sheet metal to build commercial and residential structures throughout the Midwest. Ruscilli also erects structural steel fixtures, provides real estate brokerage services, and is a commercial and industrial developer. Its Real Estate Services division operates in the commercial and industrial sectors. Clients include Ohio State University, Marriott, and Skybus Airlines. The family-owned company is headed by president and CEO L. Jack Ruscilli, a third-generation family member. Louis Ruscilli Jr. began the firm in 1945.

Milestone Construction Services specializes in construction management, consulting, and general contracting. Founded in 1998 the company started out exclusively building facilities for the Metropolitan Washington Airport Authority in the nation's capital, but has branched out into commercial projects such as office buildings, retail space, restaurants, industrial facilities, and high-end residential development. It maintains a staff of technical experts, including professional construction managers, superintendents, architects, engineers, cost estimators, inspectors, and construction scheduling professionals. Milestone Construction Services operates throughout the US from offices in Virginia and Maryland.

LVI Services, one of the top environmental contractors in the US with more than 30 offices across the country. The company provides integrated facility services such as remediation of hazardous materials, decontamination, and demolition. It caters to clients in a wide range of business segments, from hotels and retail to commercial and industrial. It also serves government and education segments. Customers have included AT&T, IBM, Marriott, Prudential, and Raytheon. Private equity firm Code Hennessy & Simmons is LVI Services' major equity investor.

Ginger likes to add spice to its menu of services. Operating dozens of subsidiaries and affiliated companies, the group is engaged primarily in construction and environmental engineering, construction and maintenance, telecommunications, and expertise studies. Ginger specializes in conducting scientific studies and making recommendations for foundations, structures, building materials, and other construction issues. The company also builds a variety of infrastructure projects and other structures. Ginger's telecommunications arm studies, engineers, installs and maintains telecommunications networks. Ginger was acquired by Grontmij in 2010. The deal created one of the largest engineering consultancies in Europe.

North American Theatrix strives for an electrifying performance with its stage lighting, audio, and video setups. The company provides electrical, structural, and mechanical engineering services, as well as project management, integrated control, and stage rigging. Ultimately, the company matches the physical space with appropriate audio/visual technology to create a sublime experience that caters to the needs of both the audience and the clients. Projects include work on casinos, sports facilities, theaters, museums, churches, corporate offices, and universities.

GSH Group's services are centered around saving energy. The company provides such services as building engineering and maintenance that help facilities improve energy efficiency and emissions control. It does mechanical and electrical work, installs HVAC systems, refurbishes roofing and drainage systems, and offers water quality treatment and equipment. The group serves clients in the financial, industrial, leisure, pharmaceutical, retail, and telecommunications markets; they include IKEA, Pfizer, and T-Mobile. Land Securities is among its public-sector clients. Named after founder George Scarr-Hall, GSH Group is still owned by members of the Scarr-Hall family and has operations in the UK, Europe, and the US.

Cavalier Homes builds castles for regular Joes. Through about a half-dozen plants the company makes manufactured single- and multi-section homes for the low- to medium-priced market in the south-central and south-Atlantic US; it delivers around 4,000 homes annually. Louisiana is its largest market. Cavalier Homes also makes cabinetry and laminated wallboard. The company markets its products through a network of about 50 exclusive and about 240 non-exclusive dealers, as well as one company-owned retail center. Southern Energy Homes, a subsidiary of Berkshire Hathaway portfolio company Clayton Homes, bought Cavalier Homes for nearly $50 million in 2009.

Oran Group (formerly The Snowie Group) provides waste-treatment and a range of other disposal services in the UK, including sludge handling and transportation and spillage cleanup. Clients include Severn Trent, Scottish Water, and the UK Ministry of Defence. The company made about £40 million during the foot-and-mouth crisis of 2001, disposing of millions of livestock carcasses. Other operations include logistics, industrial cleaning, recycling, and equipment leasing. In 2005 the Snowie Group (which began operations as a family farm in the late 1950s) was acquired by the Cork, Ireland-based Oran Group.

The Environmental Quality Company, known as EQ, provides hazardous- and industrial-waste treatment and disposal services. The company also offers facility management, cleaning, recycling, and environmental remediation services. Michigan-based EQ is the largest privately held environmental services business in that state. It also acts as a project manager for the End of Life Vehicle Solutions (ELVS) nationwide mercury switch program, which disposes of mercury switches (used in automobiles prior to 2003). EQ operates from more than 20 locations in the Midwestern and eastern US. The company was founded in 1957 by Michael Ferrantino.

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