Canal lining and construction--East and West Canal core samples

Columbia Basin Project--Irrigation Division. West and East Low Canals--Specifications 1286 and 1422. Winston Bros. Co. and Utah Construction Company, Contractors. View shows entire group of cores removed to date from 4 1/2-inch canal lining. Excellent consolidation and absence of segregation in this air entrained concrete is shown. West Canal specimens show transverse and longitudinal cuts of reinforcing steel. East Low lining is unreinforced. Calculated overrun in West Canal was much greater than in East Low Canal, a fact verified by this photograph. H.E. Foss, photographe