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1026 - 1050 of 2123 Items << < 37 38 39 40 41 42 43 44 45 46 > >>
1026 - 1050 of 2123 Items << < 37 38 39 40 41 42 43 44 45 46 > >>
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River fill at leaky cofferdam. Upstream cross-river cofferdam in the distance.
1937-04-01
2024-11-23 |
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Bents in "high" placing trestle - 36-inch I-beam columns.
1936-07-15
2024-11-23 |
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Waste (surplus) sand pile in center; blended sand for use, under trestle; and fine gravel pile to the right.
1936-05-06
2024-11-23 |
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A Government survey party cross sections the pumping plant discharge tunnels. The measurements will be used to compute the volume of the excavated rock.
1940-03-19
2024-11-23 |
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Consolidated Builders, Inc. installed one-man controls on the concrete trains. In addition to hook tender duties, the workman operates the train from any one of six control stations on the bridge deck of the bucket car.
2024-12-23
2024-11-23 |
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Album leaf 137: Bedrock<br><br>PH Coll 238.137
2024-11-23
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Governor Martin, engineer on special train, U.S. Construction Railroad
1935-07-29
2024-11-23 |
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Construction Engineer A. F. Darland and Supervising Engineer F.A. Banks watching operation of main unit generator L-3, as load of 105,000 kilowatts is reached.
1941-10-03
2024-11-23 |
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View of the east face of block 40, with a rock drilling crew in the foreground. Inspection and grouting galleries appear on extreme left.
1937-03-17
2024-11-23 |
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Governor Martin at the microphone when U.S. Construction Railroad was officially turned over to contractor for operation.
1935-07-29
2024-11-23 |
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This is a view of the deepest hole in bedrock on the east side; 120 feet deeper than average bedrock surface, and 175 feet below low water level of the river (935)". These deep fissures in the bedrock were filled with a dense, sticky clay deposit...
2024-11-23
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The Columbia River at flood stage is diverted over spillway blocks at elevation 995. the conduit liners are in place for the outlet works at elevation 1036.
1939-06-01
2024-11-23 |
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Wooden trestle across Columbia River at Grand Coulee in an ice flow.
1935-01-22
2024-11-23 |
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Mr. Francis Donaldson, Chief Engineer, MWAK Company, formally accepting operation of U.S. Construction Railroad on part of the contractor. Left to right: James H. Miner, Office Engineer, U.S.B.R; Miss Mary Cole with bottle of christening water;...
1935-07-29
2024-11-23 |
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Third Volume, Fifty First issue, of the Mason-Walsh-Atkinson-Kier CO. builders of Coulee Dam Safety Newsletter. Created by the Safety Department and issued to the residents of Mason City and contract workers at Grand Coulee Dam.
2024-11-23
2024-11-23 |
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Drum Gate Chamber Forms Fig. 11-A Appendix - 2; L-2846-6
1941-01-24
2024-11-23 |
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The manufacture of 5-inch i.d. porous concrete drain tile. After the mold form is filled with compacted concrete, the core is withdrawn and within a few minutes the mold form is removed. A 5-man crew makes an average of 242 tile in an 8-hour...
2024-11-23
2024-11-23 |
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Columbia River cut off by downstream cross-river cofferdam, center of picture, to the right. In middle are sections "D"E" and "G" of west cofferdam forming west side of new enclosure. At left is upstream crib-type cross-river cofferdam under...
1937-01-06
2024-11-23 |
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Mr. James H. Minor, U.S.B.R Office Engineer, at the microphone, delivering U.S. Construction Railroad to the contractor for operation. On his right is Governor Martin, engineer in charge of the special train
1935-07-29
2024-11-23 |
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Drum Gate Chamber Forms Fig. 11 Appendix - 2; L-2846-5
1941-01-21
2024-11-23 |
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Downstream view of diversion channel from west shore. Part of Mason City across the river.
1937-06-23
2024-11-23 |
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Looking west - on bedrock, toward block 31. Elevation 1024 trestle to the right.
1936-07-01
2024-11-23 |
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Daily log of Glover's work on dams in the U.S. West including Boulder Canyon (Hoover), Owyhee, Grand Coulee, Caballo, and Friant
2024-11-23
2007-01-03 2007-01-03 |
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Third Volume, Forty Ninth issue, of the Mason-Walsh-Atkinson-Kier CO. builders of Coulee Dam Safety Newsletter. Created by the Safety Department and issued to the residents of Mason City and contract workers at Grand Coulee Dam.
2024-11-23
2024-11-23 |
