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1201 - 1225 of 2123 Items << < 44 45 46 47 48 49 50 51 52 53 > >>
1201 - 1225 of 2123 Items << < 44 45 46 47 48 49 50 51 52 53 > >>
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Two Dorr clarifiers, 125-ft diameter and 125-ft. by 250-ft. 3,600,000 gallons at aggregate washing and screening plant, Brett pit.
1935-09-03
2024-11-23 |
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Cribs in wood plug closing spillway slope on blocks 39 and 40 to steel cell - cluster "G" in west cofferdam. A total of 2-1/2 million board-feet of lumber used in plug.
1936-04-01
2024-11-23 |
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Album leaf 279: Backside of dam. 11-30-37
PH Coll 238.279
2024-11-23
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Sounding barge for taking elevations of river bottom for fitting timber cofferdam cribs in river channel ; 52,000 soundings taken.
1936-07-01
2024-11-23 |
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Government camp looking west to Fiddle Creek Canyon.
1935-01-30
2024-11-23 |
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Screens and washing arrangement in aggregate processing plant at Brett gravel pit.
1935-09-01
2024-11-23 |
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The most precarious, and perhaps the most spectacular phase of the construction program, was the diversion of the river. This matter of river control required an exacting performance of construction operations to conform with the cycles of river...
2024-11-23
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The finished outlet portal of one of the 12 pumping plant discharge tunnels.
1939-02-08
2024-11-23 |
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A typical Mason City residence. At the close of the Mason-Walsh-Atkinson-Kier Company contract, 59 of these houses were reserved for Government employees.
1938-12-09
2024-11-23 |
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A portion of the approach road to the right fish ladder at Rock Island Dam. This road is not completed and was at this time still under construction by Goodfellow Brothers.
1938-12-01
2024-11-23 |
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Three of four main low slots (elev. 910) west of "block 40" for river diversion in 1937, estimated capacity of all, 80,000 c.f.s. Bents in high trestle in upper part; wood spillway plug to cofferdam section "G" in lower left.
1936-11-01
2024-11-23 |
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Album leaf 190: Big wigs viewing dam, 10/14/37
PH Coll 238.190
2024-11-23
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Timber cribs for cross-river cofferdam floating in flooded diversion channel - section "C" of west coffer partly removed. Large cell cluster is section "D"
1936-12-20
2024-11-23 |
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Album leaf 403: Two men awaiting beam, 7/28/38
Probably for the construction of trestles by means of which concrete was distributed. PH Coll 238.403
2024-11-23
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Snow and glaciers in the catchment basins here on the headwater of Snow Creek, high in the Cascade Mountains, made this drainage an excellent source of cold-water supply for hatchery operations during the hot summer months. Plans for the control...
2024-11-23
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Diamond Drill exploration at Icicle Creek for the Leavenworth migratory fish control station. This is the proposed site for dam No. 2 of the diversion canal and holding pond system at the Leavenworth station.
1938-05-01
2024-11-23 |
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Rockwork by C.C.C. enrollees in Coulee Dam park at foot of Douglas Avenue
2024-05-23
2024-11-23 |
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Upstream cross-river cofferdam in near foreground - right center is downstream coffer, both nearing completion. Suspension bridge crosses in center - west end of highway bridge is shown at the right.
1936-11-20
2024-11-23 |
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Album leaf 401: Two men on beam, 7/26/38
PH Coll 238.401
2024-11-23
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Part of 40 Blaw-Knox 4-yard concrete placing buckets.
1935-10-24
2024-11-23 |
