Transport buses to haul workmen to Dam from Boulder City. Warehouse present in background. Note: "Between shifts, early a.m. mess hall out of photo to the left. RR Pass in right rear. Trucks ready to take Trucks were called Crummies. Each truck had a particular station to drop off and pick up their crews. - W.A. Davis."
Babcock & Wilcox plant under construction. Note on back: ""Steel plant at damsite, used to fabricate steel for tunnels. Transported by RR on a special car then put in place with a 150 ton crant. - W.A. Davis""
Tent camps for people waiting for work at the Dam, located just before Railroad Pass. Note on back ""Ross kept a sidewinder in a box on rt. side of water ladys tent (tent in backghround at right). Ross' camp (left, background). He was bitten by the rattlesnake. Location where elderly lady sold water at the top of the Pass. $0.05 glass and $0.25 to fill a radiator. Guss Nugeat's mine out of picture to the left. Only about 5 cars a day came by in 1930."" - W.A. Davis
Railroad workers at Hoover Dam site blasting rock in the background at noon-time; this was the site where cofferdam was built. Note on back: "High scalers setting off blasts on Nevada side. - W. A. Davis."