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Argan, Inc., through its subsidiaries, provides engineering, procurement, construction, commissioning, maintenance, project development, technical, and consulting services to the power generation market. The company operates through Power Industry Services, Industrial Fabrication and Field Services, and Telecommunications Infrastructure Services segments. The Power Industry Services segment offers engineering, procurement, and construction contracting services to the owners of alternative energy facilities, such as biomass plants, wind farms, and solar fields; and design, construction, project management, start-up, and operation services for projects with approximately 16 gigawatts of power-generating capacity. This segment serves independent power project owners, public utilities, power plant equipment suppliers, and other commercial firms. The Industrial Fabrication and Field Services segment provides construction and field services and vessel fabrication services for fertilizer, lithium technology, engineering and construction, forest products, industrial gas, mining, and other companies in southeast region of the United States. The Telecommunications Infrastructure Services segment offers trenchless directional boring and excavation for underground communication and power networks, as well as aerial cabling services; and installs buried cable, high and low voltage electric lines, and private area outdoor lighting systems. It also provides structured cabling, terminations, and connectivity that offers the physical transport for high-speed data, voice, video, and security networks. This segment serves electricity cooperative, state and local government agencies, regional communications service providers, and other commercial customers, as well as contractors, other commercial firms, and federal government facilities in the mid-Atlantic region of the United States. Argan, Inc. was incorporated in 1961 and is headquartered in Rockville, Maryland.

Great Lakes Dredge & Dock Corporation provides dredging services in the United States. The company engages in capital dredging that consists of port expansion projects; coastal restoration and land reclamations; trench digging for pipelines, tunnels, and cables; and other dredging related to the construction of breakwaters, jetties, canals, and other marine structures. It is also involved in coastal protection projects that comprises of moving sand from the ocean floor to shoreline locations where erosion threatens shoreline assets; maintenance dredging, which consists of the re-dredging of previously deepened waterways and harbors to remove silt, sand, and other accumulated sediments; lake and river dredging, inland levee and construction dredging, environmental restoration and habitat improvement, and other marine construction projects; and land reclamations, channel deepening, and port infrastructure development. The company serves federal, state, and local governments; foreign governments; and domestic and foreign private concerns, such as utilities, oil and gas, and other energy companies. It operates hydraulic dredges, hopper dredges, mechanical dredges, unloaders, drill boats, and material and other barges equipment. The company was formerly known as Lydon & Drews Partnership and changed its name to Great Lakes Dredge & Dock Corporation in 1905. Great Lakes Dredge & Dock Corporation was founded in 1890 and is headquartered in Houston, Texas.

NCI Building Systems, Inc. designs, engineers, manufactures, and markets metal products for the nonresidential construction industry in North America. It operates in four segments: Engineered Building Systems, Metal Components, Insulated Metal Panels, and Metal Coil Coating. The Engineered Building Systems segment offers engineered structural members and panels; and self-storage building systems under the Metallic, Mid-West Steel, A & S, All American, Mesco, Star, Ceco, Robertson, Garco, Heritage, and SteelBuilding.com brands to builders, general contractors, developers, and end users directly, as well as through private label companies. The Metal Components segment provides metal roof and wall systems, metal partitions, metal trims, doors, and other related accessories for use in new construction, and repair and retrofit applications; roll-up doors; and interior and exterior walk doors under the MBCI, American Building Components, Eco-ficient, Metal Depots, and Doors and Buildings Components brands to manufacturers, contractors, subcontractors, distributors, lumberyards, cooperative buying groups, and other customers. The Insulated Metal Panels segment offers insulated metal panels for architectural, commercial, industrial, and cold storage end-market applications under the Metl-Span and CENTRIA brands. The Metal Coil Coating segment engages in cleaning, treating, and painting flat-rolled metals in coil form, as well as in slitting and/or embossing the metal, before the metal is fabricated for use by industrial users. It also cleans, treats, and coats heavy and light gauge metal coils for use in construction products, heating and air conditioning systems, water heaters, lighting fixtures, ceiling grids, office furniture, appliances, and other products; and provides toll coating and painted metal package services under the Metal Coaters and Metal Prep brands. NCI Building Systems, Inc. was founded in 1984 and is headquartered in Houston, Texas.

Tutor Perini Corporation, a construction company, provides diversified general contracting, construction management, and design-build services to private customers and public agencies in the United States and internationally. It operates through three segments: Civil, Building, and Specialty Contractors. The Civil segment engages in the public works construction and the replacement and reconstruction of infrastructure; and offers contracting services, including construction and rehabilitation of highways, bridges, tunnels, mass-transit systems, military defense facilities, and water management and wastewater treatment facilities, as well as provides drilling, foundation, and excavation support for shoring, bridges, piers, roads, and highway projects. The Building segment offers range of services in various specialized building markets, such as hospitality and gaming, transportation, health care, commercial offices, government facilities, sports and entertainment, education, correctional and detention facilities, biotech, pharmaceutical, industrial, and technology. The Specialty Contractors segment provides electrical, mechanical, plumbing, and fire protection systems, as well as heating, ventilation, and air conditioning services (HVAC) for civil and building construction projects in industrial, commercial, hospitality and gaming, and mass-transit end markets. It also offers pre-construction planning and project management services comprising planning and scheduling of the manpower, equipment, materials, and subcontractor services; and self-performed construction services consisting of site work, concrete forming and placement, and steel erection. The company was formerly known as Perini Corporation and changed its name to Tutor Perini Corporation in May 2009. Tutor Perini Corporation was founded in 1894 and is headquartered in Sylmar, California.

USG Corporation, through its subsidiaries, manufactures and sells building materials worldwide. The company's Gypsum division manufactures and markets gypsum and related products to construct walls and ceilings of residential, nonresidential, and institutional buildings; and agricultural and industrial customers. This segment offers gypsum wallboards and compound portfolios, as well as corner beads, joint tapes, and plasters under the USG Sheetrock brand; glass mat sheathing portfolios under the Securock brand; construction plaster products under the Red Top, Imperial, Diamond, and Supremo brands; and lightweight gypsum panels under the USG Sheetrock brand, as well as ultralight panels, USG Sheetrock brand ecosmart panels, and industrial gypsum. Its Performance Materials division manufactures and markets products for interior and exterior building applications of residential and nonresidential buildings, as well as industrial applications. This segment provides cement boards, backer boards, shower systems, performance floorings, air barrier systems, roof board portfolios, and structural panels under the USG Durock, Fiberock, Levelrock, Securock, ExoAir, Securock, and USG brands. The company's Ceilings division manufactures and markets ceiling tiles under the Radar, Eclipse, Mars, and Halcyon brands; ceiling grids under the Donn, DX, Fineline, Centricitee, and Identitee DXI brands; specialty ceilings under the Curvatura, Compasso, Radians, Illusions, Multiples, Runways, Barz, Planx, Mirra, Corniche, Wallforms, and Parti brands; and acoustical drywall ceilings under the Ensemble brand. Its USG Boral Building Products division manufactures, distributes, and sells building products, mines raw gypsum, and sells natural and synthetic gypsum under the USG Boral Sheetrock, USG Boral NextGen, Elephant, Jayaboard, Durock, and Donn DX brands. The company was founded in 1902 and is headquartered in Chicago, Illinois.