Las Vegas Sun

July 10, 2024

An explosion occurs during the construction of the Hoover Dam. Workers, called high-scalers, are suspended from the Black Canyon wall and would drill holes into the rock with 44-pound jackhammer drills. The holes are then loaded with dynamite in order to clear Black Canyon down to bedrock.

Sun File Photo

An explosion occurs during the construction of the Hoover Dam. Workers, called high-scalers, are suspended from the Black Canyon wall and would drill holes into the rock with 44-pound jackhammer drills. The holes are then loaded with dynamite in order to clear Black Canyon down to bedrock.