![Workers stand inside a Hoover Dam spillway that was heavily damaged by water during a test of the emergency outflow system in 1941. (Bureau of Reclamation) | Las Vegas Review-Journal Workers stand inside a Hoover Dam spillway that was heavily damaged by water during a test of the emergency outflow system in 1941. (Bureau of Reclamation) | Las Vegas Review-Journal](https://www.reviewjournal.com/wp-content/uploads/2017/02/web1_tumblr_ohddfrmunh1rt90jmo2_1280_7983014.jpg)
Workers stand inside a Hoover Dam spillway that was heavily damaged by water during a test of the emergency outflow system in 1941. (Bureau of Reclamation) | Las Vegas Review-Journal
![Hydroelectric Power Generators Stock Photo - Download Image Now - Indoors, Hoover Dam, Hydroelectric Power - iStock Hydroelectric Power Generators Stock Photo - Download Image Now - Indoors, Hoover Dam, Hydroelectric Power - iStock](https://media.istockphoto.com/id/493539295/photo/hydroelectric-power-generators.jpg?s=612x612&w=0&k=20&c=UVHjMZyFN-0v4Xdfl3_N2kzMOs6D5p3xHx2vvdN_4-Y=)
Hydroelectric Power Generators Stock Photo - Download Image Now - Indoors, Hoover Dam, Hydroelectric Power - iStock
Side trip from Las Vegas: Exploring the history and immensity of Hoover Dam, Lake Mead - cleveland.com
![The Greatest Dam in the World": Building Hoover Dam (Teaching with Historic Places) (U.S. National Park Service) The Greatest Dam in the World": Building Hoover Dam (Teaching with Historic Places) (U.S. National Park Service)](https://www.nps.gov/articles/images/illustration1ch.gif)
The Greatest Dam in the World": Building Hoover Dam (Teaching with Historic Places) (U.S. National Park Service)
![The turbine room inside Hoover Dam as seen Thursday, March 20, 2014 at Hoover Dam.Almost two-fifths of the workforce at the federal facility is expected to retire within the next five years. ( The turbine room inside Hoover Dam as seen Thursday, March 20, 2014 at Hoover Dam.Almost two-fifths of the workforce at the federal facility is expected to retire within the next five years. (](https://www.reviewjournal.com/wp-content/uploads/2014/09/web1_dam-old-mar23_013_3.jpg)