DUNBAR Michael E. Dunbar, vice president of special projects at the Associated Builders and Contractors and a 22-year veteran of the open-shop contractors group, died on Jan. 31 at 63 after a long illness. He had a key role in ABC communications and operations and was a former Associated General Contractors staff member. “Mike loved being around construction contractors and admired their entrepreneurship,” says ABC CEO M. Kirk Pickerel.
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.