NTD Architects (also known as NTD Architecture) provides architectural, engineering, and interior design services in the western US. It specializes in health care, educational facilities, and public sector projects, though it has also managed industrial, recreational, and corporate projects. Services offered include facility planning and programming, digital graphics, master planning, design/build, and construction management. The firm also provides support services such as strategic consultation and funding assistance. NTD Architecture has seven offices in California and Arizona. The company was founded as Neptune Thomas Associates in 1953.

Nuprecon. Considered one of the largest companies in its industry, Nuprecon specializes in demolition services, including total building and targeted demolition, and plant dismantlement. Nuprecon also offers environmental remediation and abatement, construction-related debris and hazardous waste recycling, and concrete sawing and drilling. Serving various industries, the company's projects have included factories, office and retail buildings, hotels, hospitals, and government buildings. Nuprecon, which is majority-owned by private equity firm Evergreen Pacific Partners, merged with competitor CST Environmental in 2008.

O'Brien & Gere provides a range of engineering consulting and project management services throughout the US, including wastewater management and water resources, environmental compliance and remediation, civil and facilities engineering, and utility services. It also provides contract operations and maintenance. The company, which employs hundreds of scientists, engineers, construction, and other personnel, operates some 30 offices located throughout the eastern half of the US. Employee-owned O'Brien & Gere was formed by Earl O'Brien, William Gere, and Glenn Holmes as a water and wastewater engineering partnership in 1945.

O'Connell Robertson (formerly O'Connell Robertson & Associates) is a design firm that offers architectural and engineering services. It has completed more than 1,000 projects, including new university, K-12 education, and healthcare facilities. Its services include interior design, electrical and mechanical engineering, energy conservation planning, and financial analysis. Clients include Texas A&M, the University of Texas, and the Metroplex Hospital. Established in 1950, the firm has offices in Austin and San Antonio, Texas. O'Connell Robertson is a privately-held corporation owned by several employees.

Offshore Oil Engineering Co., Ltd. goes by a couple of names -- CNOOC Engineering and COOEC -- but its business is pretty straightforward. The company designs and builds offshore platforms; underwater pipelines; floating production, storage, and offloading (FPSO) vessels; and onshore terminals for the oil and gas industry. CNOOC Engineering has two fabrication yards in China that total almost 12 million sq. ft. and a fleet of 14 engineering vessels. It works in China, across Southeast Asia, and the Middle East for clients such as Arco, BP, and Shell. Parent China National Offshore Oil Corporation (the original CNOOC) owns 51% of the company's stock. CNOOC Engineering was founded in 2000.

Onsite Energy says electricity efficiency is "outta sight." The energy services company identifies energy management measures that its mostly industrial and government clients can use to save on power and fuel-supply costs. It installs the recommended cost-effective systems, heat and power generation systems, central plant upgrades, lighting and refrigeration system upgrades, and air compressor and boiler retrofits. It also provides consulting services to help customers monitor energy usage and identify incentive programs. The company focuses on California, though its market extends throughout the western US and northern Mexico. Management bought control of Onsite in 2003.

Opus Group Berhad -- operating primarily through its subsidiaries, including Opus International Consultants (Opus IC) -- provides asset development and asset management services for clients who are developing or maintaining such massive projects as highways, airports, hospitals, sports complexes, and mixed-use developments. The company's primary source of revenue comes from its engineering, planning, and other related consultant services. Opus Group Berhad, a subsidiary of engineering and health care group UEM Group Berhad, has more than 80 offices in Malaysia, New Zealand, Australia, the UK, Canada, Vietnam, and India.

Page Southerland Page performs pre-design planning, architectural, engineering, historic preservation, interior design, and sustainable design services. Its portfolio of projects includes corporate, education, health care, hospitality, government, and science and technology facilities. Page Southerland Page traces its beginnings to a two-person office established by brothers Charles and Louis Page in Austin, Texas in 1898; Louis Southerland joined the firm during the 1930s. The company has additional offices in Dallas, Denver, Houston, and Washington, DC.

Parker Bromley is always working behind the scenes to keep the luxury of environmental controls running smoothly. The company provides electrical, heating, ventilation, and other contracting services for residences, government entities, and businesses across the UK. The company is capable of handling simple boiler renewals to large combined heating and electrical power installations. Parker Bromley also offers design and build services to complement its maintenance services. Clients have included the North British Housing Association and the Peabody Trust. Parker Bromley was founded in 1980.

Parsons Brinckerhoff (PB) is spreading its gospel around the world. A leading transportation engineering firm, the company provides planning, design, construction management, and consulting services for infrastructure projects in about 80 countries worldwide. Organized into three divisions (the Americas, international, and facilities), PB specializes in transportation projects but also works in the environmental, water, energy, urban development, and telecommunications sectors. Founded in 1885 by William Barclay Parsons, the firm designed New York City's first subway. It operates from about 150 offices globally. UK-based construction giant Balfour Beatty bought PB in 2009.

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