"1500 Enlarged sections of the Diversion Tunnels, which are later filled with Concrete Plugs, are lined with concrete, and at the same time made to conform to an exact 50-foot circular section, by means of temporary wooden panel forms, which will later be removed. August 24th, 1932.
1561 16-Cubic yard Aluminum Rock Body on AP Mack Truck. September 1st, 1932.
1596 Loading 2-cubic yard Concrete Buckets from 4-cubic yard Rex Agitator Truck for placement in Sidewall Forms.
September 10th, 1932.
1563 Lubricating Oil Reclaiming Plant at Boulder City Garage. September 3rd, 1932."