Related Links: ENR Top 400 Contractors 2014 Overview: Applying Lessons Learned Top 400 Contractors List and Analysis 2014 (PDF-subscription required) Top 400 Contractors List 2014 Celebrates Its 50th Anniversary See the Complete First-Ever ENR Top 400 Contractors List from 1964 Bechtel Corp. Website Top 400 Contractors 2014: St. Louis Building Giant McCarthy Turns 150 In February, Riley Bechtel stepped down as CEO of Bechtel (No. 1) after being diagnosed with early-stage Parkinson's disease. Bill Dudley, Bechtel's president, stepped in as the first non-family member to be CEO in the company's 116-year history.ENR: Tell us about your background. I have been
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.