Specifications and invitations. 4017. Earthwork, asphaltic membrane lining and structures, Fort Laramie Canal, stations 1531+00 to 1589+00, 1765+47 to 1830+00, 2043+46 to 2070+00 and stations 4509+20 to 4562+00, 5518+00 to 5534+00, 5900+00 to 5919+85, 6125+00 to 6165+00, and 6199+00 to 6223+12.3, North Platte project, Wyo.-Nebr.

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