C. Overaa & Co. has been making its mark in Northern California. Norwegian immigrant and carpenter Carl Overaa founded the company in 1907 in order to help rebuild San Francisco after a major earthquake struck. Today the family-owned company builds institutional, commercial, industrial, public, and housing projects primarily in San Francisco's East Bay. It provides preconstruction, design/build, construction, sustainable building, and contracting services. The company's customers have included Courtyard by Marriott, the John Muir Medical Center, the US Postal Service, YMCA, and the University of California, Berkeley.

Project Enhancement offers a variety of environmental services, including hazardous waste management, nuclear plant decommissioning, and stabilization and disposition of nuclear materials. The company serves customers throughout the US from offices in Maryland, Tennessee, and Washington state. Clients have included several US Department of Energy nuclear sites, as well a range of industrial manufacturing companies and utilties including Bechtel, British Nuclear Fuels, Commonwealth Edison, Fluor, Lockheed Martin, Morrison Knudsen, and Science Applications International.

A.P. Hubbard Lumber manufactures lumber and lumber products for the construction industry. Its offerings include air- and kiln-dried lumber made from cypress, hardwoods, softwoods, and eastern white pine, as well as engineered wood products such as glue-laminated timber, rim board, wood deckinh, sheathing, and framing lumber. The company distributes its products in the Carolinas, Virginia, and Maryland. A.P. Hubbard Lumber was founded in Greensboro, North Carolina in 1952.

Ube-Mitsubishi Cement is Japan's second largest supplier of cement and a joint venture between leading Japanese materials producer Mitsubishi Materials and diversified chemical, metals, and machinery provider Ube Industries. The company markets cement and related products manufactured by its parent companies. It primarily serves customers in the construction and industrial markets. Ube-Mitsubishi also operates a cement research institute in Tokyo. In an effort to break into the potentially lucrative Russian cement market, Ube-Mitsubishi Cement began exporting cement products there in 2008 -- a first for a Japanese company.

Taiwan Cement is a hard act to follow. Taiwan Cement Co., Ltd. manufactures and sells a variety of cement and ready-mixed concrete products for distribution throughout Asia, the Middle East, and the US. As the largest cement supplier in Taiwan, Taiwan Cement Co., Ltd. produces some 25 million metric tons of cement annually from its plants in Taiwan. It plans to double capacity and expand by building new plants, especially in the growing Chinese market. In 2010 it bought Prosperity Minerals Holdings' cement unit for about $500 million, enhancing its holdings on the mainland. In addition to its cement operations, Taiwan Cement Co., Ltd. produces paper, paper bags, and sludge treatment agents.

Crystal Windows & Door Systems Ltd, an award-winning state-of-the-art manufacturer, offers a wide array of energy management solutions for architects, developers, and property owners. Where energy management used to be a secondary priority, today companies and property owners are taking a hard look at long term energy management solutions at every juncture of the building design process. Programs such as LEEDS, and sustainable design initiatives are challenging the status quo, as designers seek to integrate sophisticated systems that reduce building management HVAC system reliance on fossil fuels.

The Monarch Cement Company, together with its subsidiaries, engages in the manufacture and sale of portland cement and ready-mixed concrete under the MONARCH brand name. Its products also include concrete products, and sundry building materials that are used in highway, bridge, and building construction. The company sells its products primarily to contractors, ready-mixed concrete plants, concrete products plants, building materials dealers, and governmental agencies in Iowa, Kansas, Nebraska, Missouri, Arkansas, and Oklahoma. The Monarch Cement Company was founded in 1908 and is based in Humboldt, Kansas.

Environmental services company Lemna operates through two main business units. Lemna Technologies provides treatment and floating cover systems for municipal and industrial wastewater lagoons. Its offerings include a biological process that treats wastewater with minimal maintenance. Lemna Technologies has installed more than 200 systems across the US. The company's Lemna International unit designs a variety of infrastructure projects, including renewable energy generation facilities and water and wastewater treatment systems. It has designed and built more than 300 projects in 16 countries. Lemna was founded in 1983.

Black & Veatch (BV) provides the ABCs of construction, engineering, and consulting. The international group is one of the largest private companies in the US. It specializes in infrastructure development for the energy, water, environmental, federal, and telecommunications markets. BV engages in all phases of building projects, from design and engineering to financing and construction. The company offers environmental consulting, operations and maintenance, security design and consulting, management consulting, and IT services. The employee-owned firm has worked on coal, nuclear, and combustion turbine plants; drinking water and coastal water operations; and wireless and broadband installation.

Structural Group has overseen more facelifts than a plastic surgeon. The group consists of five companies that serve industrial, commercial, and public sectors. Specialty contractors Structural Preservation Systems and SPS Infrastructure offers structural repair, strengthening, waterproofing, and geotechnical construction on everything from bridges to historic buildings. Another unit, VSL, provides heavy lifting and post-tensioning services (a method of reinforcing concrete with high-strength steel bars). Its Pullman Power arm repairs chimneys, stacks, and silos. UK-based Electro Tech provides corrosion control and water intrusion services worldwide. The group was founded in 1976 by owner and CEO Peter Emmons.

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