Global engineering, construction, and project management firm Bechtel Group serves sectors including oil, gas and chemical, infrastructure, metals, nuclear, environmental, mining, and security. The company conducts all project activities—from initial planning and investment to start-up and operations. Operating out of offices in some 25 countries, Bechtel has completed more than 25,000 projects in roughly 160 countries on all seven continents. Founded in 1898, the contractor may be best known for building the Hoover Dam and its containment work at the Chernobyl nuclear plant.