Adolfo Valderas Martinez

Sedgman Ltd. provides mineral processing and associated infrastructure solutions to the global resources industry. It provides multi-disciplinary engineering, project delivery and operations services with across coal, iron ore, copper, gold, lead and other base metals, as well as infrastructure. The firm operates through business two segments: Projects and Operations. The Projects segment engages in designing, constructing and commissioning of coal handling and preparation plants, minerals processing plants and other related equipment. The Operations segment engages in operating and ownership of coal handling and preparation plants, and ore crushing and screening plants. The company was founded by John Sedgman in 1979 and is headquartered in Brisbane, Australia.

IRIDIUM Concesiones de Infraestructuras SA engages in the provision of civil infrastructure engineering, construction, operation, and maintenance services. It develops, finances, invests, manages, operates, administrates, maintains, conserves, restores, and prepares government concessions involving transport and public infrastructure works. The company was founded in 1967 and is headquartered in Madrid, Spain.

CIMIC Group Ltd. is engaged in the operations of infrastructure, resources, and property markets. It operates through the following segments: Construction, Services, and Corporate & Investments. The company was founded by Stanley Ellis Leighton in 1949 and is headquartered in North Sydney, Australia.

POLAQUA Sp zoo builds roads, pipelines, infrastructures, and provides other engineering services. The firm engages in the provision of civil engineering, general, environmental, road, and fuel-related engineering services. It develops underground installations and builds roads for commercial facilities, housing estates, and logistic centers. The company was founded in July 1990 and is headquartered in Warsaw, Poland.

Dragados SA provides construction and infrastructure development services. The company constructs highways, airports, marine works, hospitals, sports stadiums, and commercial buildings. It has operations in Europe, the Middle East, Mexico, and the United States. The company is headquartered in Madrid, Spain.

Founded in 1998, Dragados UK Ltd. is a subsidiary of ACS Actividades de Construcción y Servicios SA. The private company engages in infrastructure projects and is based in London, UK.

Founded in 2011, Geocisa UK Ltd. is a civil engineering construction company. Part of ACS Actividades de Construcción y Servicios SA, the private company is based in Kennington Park, UK. Geocisa engages in the construction of civil engineering projects.