The Double Tragedy On The Hoover Dam

112 deaths were associated with the building of the Hoover Dam, but there's a strange coincidence between the first and last men to lose their lives during its construction. The first man to die was a surveyor called George Tierney, who drowned in the Colorado on December 20, 1922, while looking for an ideal place for the dam. The last man to die? Patrick Tierney, George's son, who also died on December 20 in 1935.