The Dept. of Interior on Oct. 12 lifted a July 12 moratorium on deepwater drilling for offshore operators that can comply with new and existing offshore regulations and demonstrate the availability of adequate blowout containment resources. “The oil and gas industry will be operating under tighter rules, stronger oversight, and in a regulatory environment that will remain dynamic as we continue to build on the reforms we have already implemented,” said Interior Dept. Secretary Ken Salazar on Tuesday. Deepwater drilling was banned following the April 20 explosion on BP’s Mancondo well that left 11 dead and millions of gallons of
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.