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  • 4750
    CN-12-201-202NA Klamath Project - Oregon-California. View of cutoff trench. The trenching machine dug the cutoff wall, but in doing so left a large amount of dirt in the excavated area. It was necessary ...
    Citation
  • 4751
    CN-12-201-203NA Klamath Project - Oregon-California. View of cutoff trench. The workmen in photo are removing loose material from the cutoff trench; November 1972; Bureau of Reclamation photo by D. W. ...
    Citation
  • 4754
    CN-12-201-207NA Klamath Project - Oregon-California. View of workman in trench; February 1973; Bureau of Reclamation photo by D. W. Stein
    Citation
  • 4755
    CN-12-201-204NA Klamath Project - Oregon-California. View of outlet end of closed drain line before it was backfilled. Workmen are attaching plastic drainage tubing to the steel outlet pipe; November 1972; ...
    Citation
  • 4846
    CN-12-201-296NA Klamath Project - Oregon-California. Experimental Line in Unit 71. Connection to the steel outlet pipe was made in the same manner as with the unsheathed tubing. Plastic tape is used to ...
    Citation
  • 4104
    P-12-200-3091NA Klamath Project - Oregon-California. General view of trenching and installing cinders and pipe on Closed Drain #53-2; February 1975; USBR photo by D. W. Stein
    Citation
  • 5217
    CN-12-200-64A Klamath Project - Oregon-California. Looking west at equipment developed and used by Contractor to excavate and install plastic drainage tubing in one operation. Note that the trencher tows ...
    Citation