Bechtel Corp. is one of the largest closely held companies in the United States. It reported more than $37 billion of revenue in 2014, and it employs 55,000 people, who are spread across 37 countries. Since its founding more than a century ago, the company has undertaken some of the world’s biggest construction projects, including the Hoover Dam and the English Channel Tunnel. It continues to build the core components of “routine” infrastructure, including airports, bridges, roads, ports, and oil and gas facilities. Its activities run the gamut from destroying chemical weapons to treating radioactive waste.

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