From the ground up, Fluor Corporation is one of the world's largest international design, engineering, and contracting firms. The company provides engineering, procurement, construction, maintenance, and project management services for a variety of industrial sectors around the world. Its myriad portfolio includes manufacturing plants, refineries, pharmaceutical facilities, health care buildings, power plants, and telecommunications and transportation infrastructure. Oil and gas, industrial, and infrastructure projects account for more than half of Fluor's sales. The group also provides operations and maintenance services for its projects, as well as administrative and support services to the US government.