National Labor Relations Board member Terence F. Flynn, a Republican, resigned on May 26 amid fallout from a May 2 Inspector General report alleging he improperly shared data on pending NLRB cases with former Chairman Peter Schaumber and others. Flynn has denied the allegations. He recused himself from future board cases. His July 24 departure will leave the five-person NLRB with three Democrats and one Republican.
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.