"1413-1414 These pictures, together with the two on the opposite page, complete the panorama of the canyon rim operations on the Nevada side of the river. In the picture to the left is shown the open cut excavation for the Nevada spillway. Above the spillway excavation is the start of the fill for the cableway bench. At the right is shown trucks hauling excavated rock to the Nevada spoil dumps. August 12th, 1932.
1394 This picture was taken at the Nevada abutment of the Dam. Workmen are drilling for the extension of the highway from the damsite to the Nevada spillway. The boom of a shovel is shown working in from the opposite direction. July 26th 1932
1397 Close-up view of Jackhamer men drilling for the extension of Black Canyon highway from the Dam to the Nevada spillway.July 26th, 1932."