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Aegion Corporation provides technologies to maintain, rehabilitate, and strengthen infrastructure in the United States, Canada, Europe, and internationally. It operates through two segments, Infrastructure Solutions and Corrosion Protection. The company offers various solutions for rehabilitating and maintaining aging or deteriorating infrastructure; protecting new infrastructure from corrosion and other threats; and providing integrated professional services in engineering, procurement, construction, maintenance, and turnaround services for oil and natural gas companies. Its solutions include rehabilitation of water and wastewater pipelines; fusible polyvinyl chloride products for rehabilitation and new installation; fiber reinforced polymer systems for rehabilitation and strengthening; cathodic protection for corrosion engineering control and infrastructure rehabilitation; pipe coatings for corrosion and thermal control and prevention; thermoplastic pipe lining for corrosion control, abrasion protection, and pipeline rehabilitation; and construction and maintenance of oil and gas facilities. The company serves municipal, state, and federal governments, as well as corporate customers in various industries, including pipelines, energy, oil and gas, refinery, mining, general and industrial construction, infrastructure, water and wastewater, transportation, utilities, maritime, and defense. Aegion Corporation was founded in 1971 and is headquartered in Saint Louis, Missouri.

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.

Loma Negra Compañía Industrial Argentina Sociedad Anónima, together with its subsidiaries, manufactures and sells cement and its derivatives in Argentina. The company operates through Cement, Masonry Cement and Lime; Concrete; Railroad; Aggregates; and Others segments. It offers masonry cement, aggregates, ready-mix concrete, concrete, and lime to wholesale distributors, concrete producers, industrial customers, and others for use in the construction. The company also provides rail transportation services; and treats and recycles industrial waste for use as fuel and raw material. It markets its products under the Loma Negra, San Martín, Plasticor, Cacique Plus, Cacique Max, Loma Negra Plus, and Lomax brands. The company was incorporated in 1926 and is based in Buenos Aires, Argentina. Loma Negra Compañía Industrial Argentina Sociedad Anónima operates as a subsidiary of Intercement Trading E Inversiones Argentina Sociedad Limitada.

Quanex Building Products Corporation, together with its subsidiaries, provides components for the fenestration industry in the United States, rest of Europe, Canada, Asia, the United Kingdom, and internationally. The company operates through three segments: North American Fenestration, European Fenestration, and North American Cabinet Components. It offers flexible insulating glass spacers, extruded vinyl profiles, window and door screens, and precision-formed metal and wood products, as well as cabinet doors and other components for original equipment manufacturers (OEMs) in the kitchen and bathroom cabinet industry. In addition, the company provides various non-fenestration components and products, including solar panel sealants, trim moldings, vinyl decking, fencing, water retention barriers, and conservatory roof components. It sells its products to OEMs in the building products industry through sales representatives, direct sales force, distributors, and independent sales agents. Quanex Building Products Corporation was founded in 1927 and is based 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.