Related Links: Good Guys, Wiseguys, and Putting Up Buildings: A Life in Construction The summer of 1963—remembered mostly for the March on Washington—was marked in the construction industry by the arrival of affirmative action. I don't believe I had ever heard the term before, but its entry into our lives was truly dramatic and, a half century later, worth recalling now. In New York City, starting in mid-Juneand lasting for a full five months, work was halted on the $25-million annex being built for Harlem Hospital. Pickets, alleging discrimination against blacks and Puerto Ricans in the construction trades, introduced a
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.