Archival objects in this container: Motor lorry belonging to construction companies that built Boulder Dam, 1930-1936 Overhead road transports dam workmen at the change of shift, 1930-1936 Aerial view, 1950-1959 Six Companies' scrip retrieved from a metal box which had been dumped into the Colorado River after the use of the scrip was discontinued, undated Hoover Dam, 1960-1969 Truck-mounted giant drilling rig used to cut the diversion tunnels in Black Canyon during construction, 1930-1936 High scalers drilling on the Nevada wall of Black Canyon, 1933 April Section of penstock pipe arrives at the mouth of an adit leading to the interior of one of the diversion tunnels, undated Construction, 1930-1936 Construction, 1930-1936 Construction, 1930-1936 Gang of puddlers as an eight cubic yard bucket pours sixteen tons of concrete, 1930-1936 Hoover Power Plant construction, transportation of 30 foot diameter section of penstock, 1930-1936 Construction, 1930-1936 Dumping concrete, 1930-1936 Boulder City Ranger Jack Weiler and daughter Dorothy, Boulder City, 1933 Hoover Power Plant, section of penstock pipe, 1930-1936 Boulder City home of Jack Weiler, 1938 Hoover Power Plant, turbine generation unit, 1936 Hoover Dam, undated Mr. and Mrs. Jack Weiler and daughter Dorothy, 1920 Boulder City Ranger Jack Weiler and daughter Dorothy, 1928 Dumping concrete, 1930-1936 Boulder City Ranger Jack Weiler, 1920-1929 Dumping concrete, 1930-1936 Load More