Samsung C&T is the trading, investment, construction, and engineering arm of the Samsung Group, the largest "chaebol" (business conglomerate) in South Korea. The unit's trading and investment group is active in a number of sectors, including oil and gas, electronics, heavy machinery, and chemicals. Meanwhile, the construction and engineering division handles projects including bridges and ports, power plants, petrochemical facilities, and multifamily residential developments. It has helped build such notable projects as the Petronas Twin Towers in Malaysia and the Burj Khalifa in Dubai -- both among the world's tallest buildings. Founded in 1938, Samsung C&T has more than 100 offices worldwide.

Sargent Corporation provides civil engineering and construction services for customers operating throughout the northeastern US. The company's projects include construction of airports, landfills, wind power sites, malls, sports fields, highways, transfer stations, and hatcheries. Projects have included an airplane hanger for the Air National Guard, upgrading a highway bridge interchange, and converting a limestone rock quarry into a solid waste landfill. Sargent Corporation was formed in 2005 when Sargent & Sargent acquired H.E. Sargent from Fru-Con Construction. The acquisition returned ownership of the company founded by Herb Sargent in 1926 to the Sargent family.

Satterfield & Pontikes Construction provides general contracting, consultation, and construction management services, primarily in the Gulf Coast region of Texas and Louisiana. The company often works on buildings for the commercial, retail, industrial, educational, entertainment, and recreational sectors. Recent projects include the Texas A&M University Health Science Center and the expansion of the World War II Museum in New Orleans. The company specializes in concrete work and early-stage site work, as well as 3-D modeling and virtual design. Satterfield & Pontikes Construction was founded in 1989 and is headed by majority owner and CEO George Pontikes, Jr.

SEMA Construction does a large amount of its business in the Mountain West. The company specializes in civil construction, including highway contracting, bridges, flyovers, tunnels, dams, spillways, and reservoirs. SEMA also works on commercial, industrial, and residential site development projects, as well as infrastructure projects (pipe, sewers, water, and drainage works). SEMA Construction, which operates primarily in Colorado and California, is part of the SEMA Companies, which includes affiliates active in golf course construction and precast concrete manufacturing.

Shaw Group UK Limited is probably best known for its industrial pipe fabrication operations, but it also provides design, engineering, and construction services for customers in such industry sectors as energy, chemicals, environmental, and infrastructure. Shaw Group UK (with three offices in England) is a subsidiary of US-based Shaw Group. The Shaw Group expanded operations in the UK in 2009 when it added a power group office, which is developing new coal-fired power stations. Shaw has its sights set on leading nuclear power development around the world. Shaw Group UK evolved from former Midlands-based firms Aiton & Co., Dunn International, and PE&D.

Shawmut Woodworking & Supply, which does business as Shawmut Design and Construction, provides beginning-to-end construction services, from preconstruction planning to post-construction quality assurance checks. Shawmut Design and Construction has experience building retail, restaurants, academic, banking, health care, and science facilities; it also handles corporate interiors and high-end residential construction and has expertise in cultural and historical preservation projects. The employee-owned company serves clients nationwide and operates from offices in a half-dozen states.

One of the largest contractors in the southeastern US, Shelco specializes in the construction of warehouse and distribution facilities; educational, manufacturing, retail, and health care facilities; and office buildings. Repeat customers account for nearly three-quarters of Shelco's business. Not content to stay in its home state of North Carolina, the company is also active in South Carolina, Georgia, and Virgina. The company was founded in 1978 in Winston-Salem, North Carolina by Charles and Edwin Shelton. The Sheltons owned the company until 2003, when they sold Shelco to six senior managers.

Shimizu provides architectural, engineering, construction, and development services for commercial, industrial, infrastructure, and residential projects around the world. One of Japan's largest general contractors, the company has worked on major projects including Tokyo's Metro subway, Singapore's Changi Airport, and the Malaysia-Singapore Bridge. Other areas of specialization range from offices and power stations to railroads and dams. Shimizu has increasingly focused on green building and urban renewal projects. Needless to say, earthquake-resistant technologies have always been a part of the company's approach. The company also provides facilities management. Shimizu was founded in 1804.

Shook National Corporation provides commercial and industrial construction services through its subsidiaries. The group offers design/build, construction management, and traditional general contracting project delivery through its ABS General Contractors, Amerticon, Shook Construction, Shook Masonry, and Shook, Inc., subsidiaries. The company specializes in healthcare and industrial facilities, commercial, institutional and educational buildings, telecommunications and data centers, as well as infrastructure projects such as water and waste water treatment plants. Founded in 1926 by Charles Shook, the now employee-owned company has offices in Indiana and Ohio.

Sigdo Koppers is a holding company with more than 40 subsidiaries involved in heavy construction, civil engineering, appliance manufacturing, plastics, and automobile and industrial machinery sales and distribution. Main subsidiary Sigdo Koppers Ingeniería y Construcción (ICSK) owns the largest fleet of heavy machinery in Chile and is responsible for infrastructure and development projects across South America. Other companies are involved in industrial services related to mining, energy, and forestry, including chemical plants for producing ammonium nitrate fertilizer and explosives.

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