MasTec is an infrastructure construction company operating mainly throughout North America across a range of industries. Co. manages its operations under five operating segment: Communications, which performs engineering, construction, maintenance and customer fulfillment activities related to communications infrastructure; Clean Energy and Infrastructure, which primarily serves energy, utility and other end-markets; Oil and Gas, which performs engineering, construction and maintenance services for pipelines and processing facilities for the energy and utilities industries; Electrical Transmission, which primarily serves the energy and utility industries; and Other.