Family-owned Okland Construction Company is a regional general contracting, design/build, and construction management firm. The company works on projects in several construction markets: commercial, education, government, health care, infrastructure, high-tech, industrial, retail, and corporate. Okland Construction offers value engineering and phased or fast-track design and construction. It also provides pre-construction services, risk management, and partnering. Self-performed work includes concrete construction, wood framing, and carpentry. Okland has constructed projects in about 30 US states and throughout Mexico. It has offices in Salt Lake City; Durango, Colorado; Ketchum, Idaho; and Tempe, Arizona.

Oltmans Construction Co. offers preconstruction, general contracting and design/build project delivery, construction management, tenant improvements, and seismic retrofits among its services for commercial and industrial buildings throughout California, Nevada, and Arizona. The company also completes its own concrete work. Oltmans is one of the top general contractors in its home state, as well as one of the top builders of distribution facilities in the US. The company was founded in 1932 and has been led by three generations of the Oltmans family.

Orascom Construction Industries (OCI),the Egyption company offers construction services and fertilizer products primarily in the Middle East, North Africa, and Central Asia. OCI performs large-scale commercial, industrial, and infrastructure engineering and building services; principal operating units include the Besix Group in Belgium and Contrack International in the US. Its fertilizer operations include Egyptian Fertilizer Company and Gavilon. The company sold its cement operations to building materials behemoth Lafarge in 2008.

Orion Marine Group, Inc. operates as a marine specialty contractor serving the heavy civil marine infrastructure market. The company provides a range of marine construction and specialty services on, over, and under the water along the Gulf Coast, the Atlantic Seaboard, and the Caribbean Basin, as well as the Pacific Northwest. The company’s marine construction services include construction of marine transportation facilities, marine pipelines, bridges and causeways, and marine environmental structures. Its marine transportation facility construction projects comprise public port facilities for container ship loading and unloading; cruise ship port facilities; private terminals; recreational use marinas and docks; and other marine-based facilities. Orion Marine Group’s marine pipeline service projects consist of the installation and removal of underwater buried pipeline transmission lines; installation of pipeline intakes and outfalls for industrial facilities; construction of pipeline outfalls for wastewater and industrial discharges; river crossing and directional drilling; and creation of hot taps and tie-ins. Its bridge and causeway projects include the construction, repair, and maintenance of bridges and causeways, as well as the development of fendering systems in marine environments; and marine environmental structure projects primarily comprise the installation of concrete mattresses to ensure erosion protection, and the installation of geotubes for wetlands and island creation. In addition, the company offers dredging services; specialty services, including salvage, demolition, surveying, towing, diving and underwater inspection, excavation, and repair; diving services; and survey services, including surveying pipelines and performing hydrographic surveys. Its customers include federal, state, and local governmental agencies, as well as private commercial and industrial enterprises. The company was founded in 1994 and is headquartered in Houston, Texas.

Ortiz Enterprises is a full-service construction company that provides services for a variety of freeway, flood control, and commercial projects. The company owns and operates specialty recycling equipment that crushes old cement from roads, bridges, air bases, and other sources to recycle into road-base materials for its own jobs and for those of others. President Patrick "Pat" Ortiz founded Ortiz Enterprises in 1984.

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