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  • 4732
    CN-12-201-184NA Klamath Project - Oregon-California. Side view of the hopper unit used to feed both pipe and cinders into the trench. The digging chain for the trencher is mounted directly in front of ...
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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 ...
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  • 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. ...
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  • 4754
    CN-12-201-207NA Klamath Project - Oregon-California. View of workman in trench; February 1973; Bureau of Reclamation photo by D. W. Stein
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  • 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; ...
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  • 4757
    CN-12-201-209NA Klamath Project - Oregon-California. The outlet ends of the closed drains were filled and compacted by hand. Note marker post being positioned by workman; November 1972; Bureau of Reclamation ...
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  • 4775
    CN-12-201-227NA Klamath Project - Oregon-California. Workman is coupling two sections of 4-inch tubing together, A 4-inch collar is taped around the tubing, making a very strong connection; November 1972; ...
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  • 4805
    CN-12-201-256NA Klamath Project - Oregon-California. View of laser control panel. Red, yellow and green lights indicate if the trencher is on grade. Facing the camera is A. H. Patterson, the contractor; ...
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  • 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 ...
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  • 4082
    P-12-200-3069NA Klamath Project - Oregon-California. View of operator and trencher control panel. Left side of panel shows lights for the Laser; January 1975; USBR photo by D. W. Stein
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