MasTec is an infrastructure construction company operating mainly throughout North America across a range of industries. Co.'s operating segments include: Communications, which performs engineering, construction, maintenance and customer fulfillment activities related to communications infrastructure; Clean Energy and Infrastructure, which primarily serves energy, utility, government and other end-markets through the installation and construction of power generation facilities, primarily from clean energy and renewable sources; and Oil and Gas, which performs engineering, construction and maintenance services for pipelines and processing facilities for the energy and utilities industries.