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Show agencies, but the construction industry and general public as well. The Bureau of Reclamation would be the lead agency in the research, supported by an advisory committee consisting of eminent tunneling authorities,, Representatives of other Governmental agencies, technical societies, industry, and educational institutions would be invited to contribute fact and philosophy to the research program and to formulate, screen, and coordinate research,. Upper Stillwater Tunnel would be driven from each end, and several experimental methods of tunnel waste removal would be employed. These methods would include ( 1) slurry, ( 2) conveyor belt, ( 3) rapid transit train, and ( 4) a pneumatic means of transporting the waste material. A sophisticated conventional mining and waste removal method would be tried at the inlet end, with the waste material being placed in the Upper Stillwater Reservoir area below normal water surface. Other methods may also be used at this portal. A slurry operation for tunnel waste removal would be employed for a portion of the outlet reach of the tunnel. Settling basins located near the portal would be used to settle out the solid material, which would finally be placed in a waste disposal area. The tunnel waste removed by other methods would be added to this material. This area would then be prepared for revegetation. Excavation would be controlled to minimize vibration. Special concrete- lined settling tanks would be provided during construction to keep uncontrolled waterflows from the tunnel off of the slope below the portal. North Fork Siphon The proposed North Fork Siphon would cross the North Fork of the Duchesne River about 4 miles upstream from the confluence of West Fork and the North Fork of the Duchesne River. The siphon would extend from the outlet portal of Stillwater Tunnel on the east slope of the North Fork Duchesne River Canyon, across the canyon southwesterly to the inlet portal of Hades Tunnel on the west slope of the canyon. Hades Creek feeder pipeline would enter the aqueduct at the North Fork Siphon. Hades Creek Diversion Structure and Feeder Pipeline Hades Creek diversion structure would divert Hades Creek water into Hades Creek feeder pipeline for conveyance to 47 |