Category:Construction of the Grand Coulee Dam

Media in category "Construction of the Grand Coulee Dam"

The following 200 files are in this category, out of 376 total.

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"A bulge in the ice at Hell Gate on the Columbia River caused by the accumulation of floe ice piling up at this point." - NARA - 294272.jpg 3,000 × 2,437; 4.04 MB
"A cleanup crew removing all particles of broken rock on dam foundation." - NARA - 294337.jpg 2,440 × 3,000; 3.83 MB
"East side cofferdam and excavation area - forebay slope to the right." - NARA - 294064.jpg 3,000 × 2,230; 751 KB
"East side excavation area - tailrace slope on the left. In the upper center of 770 is 'tripper' at the sand and... - NARA - 294061.jpg 3,000 × 2,329; 1.26 MB
"East side excavation area - tailrace slope on the left. In the upper center of 770 is 'tripper' at the sand and... - NARA - 294062.jpg 3,000 × 2,328; 1.51 MB
"East side excavation area in the foreground showing feeder belts to cross-river conveyor, cofferdam in distance." - NARA - 293963.jpg 3,000 × 2,285; 1.05 MB
"East side excavation area showing the deep crevice on the left, east cofferdam on the right, conveyor to ridge... - NARA - 294264.jpg 3,000 × 2,314; 1.59 MB
"East side excavation area, showing the two conveyor feeder belts leading to cross-river conveyor, with main-line... - NARA - 293977.jpg 3,000 × 2,189; 1.29 MB
"East side excavation area." - NARA - 294002.jpg 3,000 × 2,345; 1.31 MB
"East side excavation operations looking south into a deep rock crevice. The lowest dragline is located near the dam... - NARA - 294263.jpg 3,000 × 2,188; 1.47 MB
"East tower of suspension bridge for sand and gravel conveyor." - NARA - 294024.jpg 2,424 × 3,000; 731 KB
"Pouring an approach bent, west side of highway bridge." - NARA - 293973.jpg 2,440 × 3,000; 708 KB
"Pouring concrete column supports for the west mixing plant." - NARA - 294068.jpg 2,191 × 3,000; 934 KB
"Power house concrete blocks on west side, shown under the lower placing trestle." - NARA - 294299.jpg 3,000 × 2,310; 1.17 MB
"Power shovel dumping into tractor powered dump buggy in foundation excavation." - NARA - 294135.jpg 2,118 × 3,000; 610 KB
"Preparing block 40-J for concrete." - NARA - 294189.jpg 3,000 × 2,384; 1,009 KB
"Putting down steel sheet piling in cofferdam cells." - NARA - 294133.jpg 2,133 × 3,000; 480 KB
"Re-setting a conveyor feeder on the east side." - NARA - 294093.jpg 3,000 × 2,428; 1.14 MB
"Ready for a concrete pour in block 14G, showing cleaned bedrock and form work on which are mounted the metal... - NARA - 294147.jpg 3,000 × 2,360; 659 KB
"Ready for grout pour at block 40-H." - NARA - 294190.jpg 3,000 × 2,229; 649 KB
"Rebuilding cell F-6." - NARA - 294352.jpg 3,000 × 2,262; 929 KB
"Reeling up highline cable used in erecting highway bridge superstructure." - NARA - 294087.jpg 3,000 × 2,421; 704 KB
"River ice which accumulated above the conveyor trestle crossing the Columbia River." - NARA - 294243.jpg 3,000 × 2,427; 1.21 MB
"Rock excavation operations at elevation 1010, site of the proposed Eastmix concrete plant." - NARA - 294222.jpg 3,000 × 2,339; 1.22 MB
"Roller bearings for belt conveyor leaving gravel screening plant." - NARA - 294131.jpg 2,120 × 3,000; 889 KB
"Rollers in place for conveyor belts leading from sand classifiers of the sand and gravel plant." - NARA - 293965.jpg 2,442 × 3,000; 1 MB
"Sand and gravel dewatering equipment." - NARA - 293964.jpg 3,000 × 2,315; 1.24 MB
"Sand and gravel plant. The building to the right is the crusher plant from which the conveyor runs to the balancing... - NARA - 294030.jpg 3,000 × 2,343; 1.22 MB
"Section of Grand Coulee, Wash., boom town near Grand Coulee Dam." - NARA - 294114.jpg 3,000 × 2,145; 608 KB
"Sheet piling in section F of the west cofferdam exposed in excavating west of block 40." - NARA - 294315.jpg 3,000 × 2,431; 1.38 MB
"Sliding ground on the east forebay slope. Shovel working at elevation 970." - NARA - 294335.jpg 3,000 × 2,338; 1.45 MB
"Some of the 40 four-yard concrete buckets." - NARA - 294071.jpg 3,000 × 2,322; 839 KB
"Spreading mortar over the bedrock." - NARA - 294149.jpg 2,427 × 3,000; 744 KB
"Squad of C.C.C. boys at work on landscape development, government town." - NARA - 294117.jpg 3,000 × 2,096; 1,013 KB
"Steamboat rock in Grand Coulee. This landmark is located in the middle of the coulee about eight miles from the dam... - NARA - 294044.jpg 3,000 × 2,113; 984 KB
"Steamboat Rock, a landmark in Grand Coulee, near the Grand Coulee Dam inlet to Grand Coulee proper." - NARA - 294038.jpg 3,000 × 2,137; 503 KB
"Steamboat Rock, a landmark in Grand Coulee." - NARA - 294040.jpg 3,000 × 2,118; 543 KB
"Steel piling cells under construction between the north end of 'Block 40' and cofferdam section 'G.' In the lower... - NARA - 293999.jpg 3,000 × 2,393; 1.15 MB
"Street scene in Grand Coulee, Wash., boom town near Grand Coulee Dam." - NARA - 294112.jpg 3,000 × 2,077; 531 KB
"Stringing piling in a cell of the closure section on the west side." - NARA - 294080.jpg 2,435 × 3,000; 679 KB
"Substructure for mixing plant and placing trestles, west side." - NARA - 294145.jpg 2,316 × 3,000; 730 KB
"Suspension bridge for transporting sand and gravel to the west side mixing plant. The two spans shown here are each... - NARA - 294007.jpg 3,000 × 2,241; 1.08 MB
"Terminus of belt conveyor disposal system in Rattlesnake Canyon with view showing shuttle rig." - NARA - 294118.jpg 3,000 × 2,083; 700 KB
"Terminus of belt conveyor system in Rattlesnake Canyon. View shows shuttle traction rig." - NARA - 294121.jpg 3,000 × 2,135; 893 KB
"Terminus of belt conveyor system in Rattlesnake Canyon." - NARA - 294116.jpg 3,000 × 2,087; 570 KB
"Terminus of belt conveyor system in Rattlesnake Canyon." - NARA - 294119.jpg 2,121 × 3,000; 725 KB
"Thanksgiving party for grade school children in recreation room of government schoolhouse." - NARA - 294176.jpg 3,000 × 2,267; 631 KB
"The 175-foot boom of the conveyor stacker section discharging material from the east side, 7,000 feet distant." - NARA - 294003.jpg 3,000 × 2,273; 853 KB
"The 175-foot boom of the conveyor stacker section discharging material from the east side, 7,000 feet distant." - NARA - 294005.jpg 2,457 × 3,000; 1.1 MB
"The 175-foot boom of the conveyor stacker section discharging material from the east side, 7,000 feet distant." - NARA - 294006.jpg 3,000 × 2,299; 1.07 MB
"The 3,000 foot cellular steel cofferdam and a portion of the 3,500 foot suspension bridge for the belt conveyor... - NARA - 294049.jpg 3,000 × 2,216; 674 KB
"The 60-inch conveyor, from feeder E8 in the east excavation area to the spoil pile in Rattlesnake Canyon on the west... - NARA - 294078.jpg 3,000 × 2,320; 1.2 MB
"The area near the west abutment and powerhouse site in which the first pour of concrete was made. A completed pour... - NARA - 294146.jpg 3,000 × 2,323; 1.13 MB
"The Calyx 36" core drilling rig." - NARA - 293990.jpg 2,441 × 3,000; 777 KB
"The completed dam. This is an aerial photograph on which an artist has placed the dam as it will look when... - NARA - 293979.jpg 3,000 × 1,986; 807 KB
"The completed frozen arch with a full view of the crevice cleaned out to bedrock. Average bottom of pit is at elev.... - NARA - 294343.jpg 3,000 × 2,337; 1.33 MB
"The discharge end of the 200 foot conveyor boom in the gravel pit, straddling the conveyor running out on the... - NARA - 294029.jpg 3,000 × 2,302; 1.22 MB
"The east pit at the beginning of excavation operations in the deep crevice below the frozen barrier." - NARA - 294345.jpg 3,000 × 2,335; 1.43 MB
"The east side excavation area with full view of river face of east side timber cofferdam, exposed rock wall on east... - NARA - 294158.jpg 3,000 × 2,345; 721 KB
"The Eastmix concrete plant under construction." - NARA - 294301.jpg 2,430 × 3,000; 1.07 MB
"The gravel 'ladders' from the plant conveyors to the tunnel underneath and the 48-inch belt running to the mixer... - NARA - 294031.jpg 3,000 × 2,336; 1.07 MB
"The heavy timber struts between the sheet steel walls in section 'F.' Excavation to bedrock, 60 feet deep, is going... - NARA - 294000.jpg 2,354 × 3,000; 1.45 MB
"The overflow crest of Dry Falls, Grand Coulee, Washington, as seen from across the lake at the base of the falls." - NARA - 294045.jpg 3,000 × 2,127; 953 KB
"The sand and gravel conveyor from mixer storage to the west side mixer. On the left of the mixing plant is excavated... - NARA - 294067.jpg 3,000 × 2,309; 1.08 MB
"The west side placing trestles showing 2 cantilever-type or Hammerhead cranes and 2 Whirley cranes used for handling... - NARA - 294309.jpg 3,000 × 2,335; 1.18 MB
"The west vista house, provided for visitors to Grand Coulee Dam." - NARA - 294348.jpg 3,000 × 2,361; 1,011 KB
"The Westmix concrete plant showing the concrete placing trestles, upper trestle at elevation 1024, lower trestle at... - NARA - 294139.jpg 3,000 × 2,197; 1,017 KB
"This shows bedrock on the west end of the dam foundation, the west abutment is to the right and the ledge in the... - NARA - 293985.jpg 3,000 × 2,363; 1.06 MB
"Threading a steel pile in one of the 'block 40' closure cells." - NARA - 294079.jpg 2,446 × 3,000; 614 KB
"Three-view panorama from top of east abutment . The Eastmix concrete plant under construction appears in the center... - NARA - 294277.jpg 3,000 × 2,316; 1.16 MB
"Three-view panorama from top of east abutment. The Eastmix concrete plant under construction appears in the center... - NARA - 294278.jpg 3,000 × 2,311; 1.28 MB
"Three-view panorama from top of east abutment. The Eastmix concrete plant under construction appears in the center... - NARA - 294279.jpg 3,000 × 2,286; 1 MB
"Tractor powered scrapers removing top soil from gravel pit." - NARA - 294104.jpg 3,000 × 2,143; 479 KB
"Tractor powered scrapers taking top soil off gravel deposit at pit location." - NARA - 294214.jpg 3,000 × 2,130; 610 KB
"Tractor skinner." - NARA - 294213.jpg 3,000 × 2,130; 500 KB
"Train of dump buggies waiting to be filled in foundation excavation." - NARA - 294134.jpg 2,113 × 3,000; 841 KB
"Transfer point on belt conveyor system." - NARA - 294120.jpg 3,000 × 2,128; 750 KB
"Trestle bridge carrying conveyor belt over Columbia River." - NARA - 294102.jpg 3,000 × 2,154; 623 KB
"Typical C.C.C. enrollee." - NARA - 294132.jpg 2,119 × 3,000; 615 KB
"Typical muck moving equipment. Photo shows dump buggy hauled by tractor dumping load onto grizzly for transportation... - NARA - 294101.jpg 3,000 × 2,060; 905 KB
"Typical rimrock and talus formation in Grand Coulee, Washington. This photo made near Grand Coulee Dam terminus of... - NARA - 294043.jpg 3,000 × 2,115; 850 KB
"Typical section of belt conveyor." - NARA - 294122.jpg 3,000 × 2,140; 1.03 MB
"Uncovered rock at east abutment - east side Wakefield piling cofferdam conveyor crossing Columbia River to west side... - NARA - 294075.jpg 3,000 × 2,355; 1.21 MB
"Under the trusses in 'block 40'. - NARA - 294048.jpg 3,000 × 2,354; 1,015 KB
"Upstream concrete placing trestle with Hammerhead crane, whirley and erecting stiffleg derrick. Average height of... - NARA - 294230.jpg 3,000 × 2,325; 1.16 MB
"Upstream placing trestle on the west side showing cranes handling concrete blocks below." - NARA - 294306.jpg 2,331 × 3,000; 1.15 MB
"Upstream view of block 40 taken from west bank conveyor tower." - NARA - 294188.jpg 2,342 × 3,000; 1.15 MB
"Upstream view of Columbia River at Hell Gate showing narrow channel covered with ice during the cold weather in... - NARA - 294271.jpg 3,000 × 2,439; 862 KB
"Upstream view of contractor's trestle showing the accumulation of ice packed against the pile bents." - NARA - 294244.jpg 2,426 × 3,000; 1.09 MB
"View east from the downstream trestle showing a portion of a fault zone east of section 30 on the left. The grizzly... - NARA - 294260.jpg 3,000 × 2,337; 1.3 MB
"View east looking down on portion of concreted area from trestle at Westmix plant." - NARA - 294186.jpg 3,000 × 2,327; 1.1 MB
"View from east tailrace slope - east and center conveyor suspension bridge towers - cofferdam, and in center of... - NARA - 293978.jpg 3,000 × 2,279; 1.17 MB
"View from the east abutment - excavation area for the east end of the dam in the foreground. The wood piling along... - NARA - 293996.jpg 3,000 × 2,192; 1.13 MB
"View from the lower end of west cofferdam showing Westmix plant and placing trestles. In the foreground appears a... - NARA - 294305.jpg 3,000 × 2,363; 1.22 MB
"View from the west side of Block 40 showing concreting operations, timber crib construction and excavation of clay... - NARA - 294298.jpg 3,000 × 2,334; 894 KB
"View from the Westmix platform showing concrete blocks under construction above the downstream placing trestle." - NARA - 294296.jpg 3,000 × 2,340; 1.09 MB
"View inside of west cofferdam showing heavy timber bracing across the special box type structure in excavating for... - NARA - 294153.jpg 3,000 × 2,442; 941 KB
"View looking downstream across the damsite showing winter conditions. Open water appears where the channel is... - NARA - 294240.jpg 3,000 × 2,337; 939 KB
"View looking downstream across the west area showing the Westmix plant, placing trestles, crane equipment and... - NARA - 294307.jpg 3,000 × 2,341; 1.26 MB
"View looking east from the Westmix plant showing concrete blocks between the placing trestles." - NARA - 294257.jpg 3,000 × 2,333; 1.18 MB
"View looking east from the Westmix trestle showing concrete blocks." - NARA - 294235.jpg 3,000 × 2,328; 1.22 MB
"View looking into a deep crevice on the east side showing sliding ground on forebay slope to the right." - NARA - 294304.jpg 3,000 × 2,339; 1.33 MB
"View looking lengthwise across the top of the east forebay slide showing the freezing layout in the rear." - NARA - 294340.jpg 3,000 × 2,343; 2.12 MB
"View looking north across the west dam and power-house area showing Westmix concrete plant, placing trestles and... - NARA - 294320.jpg 3,000 × 2,345; 1.33 MB
"View looking northeast showing concrete blocks at foot of west abutment." - NARA - 294256.jpg 3,000 × 2,337; 1.22 MB
"View looking south into the east forebay slide area, showing the clay material which slid into the deep crevice. The... - NARA - 294346.jpg 3,000 × 2,336; 1.28 MB
"View looking upstream at Hell Gate on the Columbia River, located about 22 miles above the dam. Granite obstructions... - NARA - 294269.jpg 3,000 × 2,438; 1.01 MB
"View looking west across the damsite showing winter conditions with river entirely frozen over below the damsite." - NARA - 294239.jpg 3,000 × 2,318; 834 KB
"View looking west across the west area. Erection of a steel bent in upstream trestle is shown on the left and... - NARA - 294252.jpg 3,000 × 2,325; 1.23 MB
"View looking west across the west area. Workmen tamping concrete in block 40G at elevation 860 shown on the right." - NARA - 294308.jpg 3,000 × 2,351; 1.24 MB
"View looking west across the west dam and power-house area." - NARA - 294322.jpg 3,000 × 2,328; 1.44 MB
"View looking west of the east approach to Government Highway Bridge." - NARA - 294199.jpg 3,000 × 2,336; 1.03 MB
"View looking west toward the west abutment showing concrete blocks between the placing trestle." - NARA - 294258.jpg 3,000 × 2,326; 1.2 MB
"View of bedrock and concrete poured section of west bank area." - NARA - 294187.jpg 3,000 × 2,343; 1.22 MB
"View of block 40, sections E to J, showing the timber crib tie-in structure from the concrete dam to steel cofferdam... - NARA - 294294.jpg 3,000 × 2,325; 1.08 MB
"View of cement storage and blending plant - eight steel storage silos, 5,000 barrels each and two blending silos... - NARA - 294025.jpg 3,000 × 2,251; 816 KB
"View of cement storage and blending plant - eight steel storage silos, 5,000 barrels each and two blending silos... - NARA - 294026.jpg 3,000 × 2,220; 901 KB
"View of cement storage and blending plant - eight steel storage silos, 5,000 barrels each and two blending silos... - NARA - 294027.jpg 2,631 × 3,000; 1.17 MB
"View of concrete placing in block 40, sections A to 3, between elevation 925 to 950." - NARA - 294293.jpg 3,000 × 2,326; 995 KB
"View of east bank area from west bank." - NARA - 294191.jpg 3,000 × 2,195; 806 KB
"View of east side forebay showing the upper extremities of the slide area." - NARA - 294312.jpg 3,000 × 2,323; 1.16 MB
"View of east side of rock excavation with deep crevice shown in the center. Sliding ground on the forebay slopes... - NARA - 294311.jpg 3,000 × 2,343; 1.32 MB
"View of excavation operations on berm west of block 40." - NARA - 294302.jpg 3,000 × 2,319; 942 KB
"View of the west abutment showing the concrete plant, placing trestles, and suspension bridge carrying the aggregate... - NARA - 294144.jpg 3,000 × 2,239; 1.08 MB
"View of the west side of block 40 showing construction of timber crib tie-in structure across bucket section... - NARA - 294282.jpg 3,000 × 2,440; 1.19 MB
"View of west bank abutment and power house area taken from conveyor deck of west bank suspended conveyor tower... - NARA - 294180.jpg 2,277 × 3,000; 1.14 MB
"View of west bank area from east bank showing fog condition which has prevailed at the development during month of... - NARA - 294179.jpg 3,000 × 2,186; 627 KB
"View of west bank area from top of forebay slope at west abutment." - NARA - 294184.jpg 3,000 × 2,354; 1.23 MB
A 5-yard electric shovel loading 10-yard 'buggies' in the east excavation - NARA - 294088.jpg 3,000 × 2,366; 942 KB
A close view of the east side slides, showing the contractor's bulkhead at the bottom - NARA - 294313.jpg 3,000 × 2,371; 1.09 MB
A close-up of trusses in 'block 40' - NARA - 294055.jpg 3,000 × 2,329; 948 KB
A close-up picture of solid granite being prepared for the west dam abutment, the rock ledge at the right is where... - NARA - 293986.jpg 2,343 × 3,000; 1.37 MB
A close-up view of a five-yard dipper on electric shovel - NARA - 294280.jpg 2,420 × 3,000; 722 KB
A close-up view of drillers - NARA - 294287.jpg 2,432 × 3,000; 653 KB
A close-up view of the concrete blocks showing the curved fillet section at the upstream toe of the dam - NARA - 294321.jpg 3,000 × 2,194; 1.21 MB
A close-up view of the east forebay slide area showing work under way on construction of a frozen barrier at its top - NARA - 294339.jpg 3,000 × 2,334; 1.37 MB
A close-up view of the layout of pipe for freezing operations. The barrier is about 100 feet long, 10 feet wide and... - NARA - 294341.jpg 3,000 × 2,442; 1.43 MB
A detail view of forms for block pours - NARA - 294329.jpg 2,342 × 3,000; 1.07 MB
A detail view of sliding ground. The amount of settlement may be judged by comparison with the surveyor's 7-foot rod - NARA - 294333.jpg 3,000 × 2,440; 981 KB
A downstream two-view progression picture showing the west bank area - NARA - 294181.jpg 3,000 × 2,331; 1.14 MB
A downstream two-view progression picture showing the west bank area - NARA - 294182.jpg 3,000 × 2,313; 1.07 MB
A downstream view showing the west area after the first spring thaw with frozen condition of the river still in... - NARA - 294251.jpg 3,000 × 2,254; 1.15 MB
A downstream view through the narrow channel at Hell Gate on the Columbia River - NARA - 294270.jpg 3,000 × 2,429; 1,018 KB
A dragline beginning to remove clay from below the frozen barrier. Drainage well E-5, in which a heavy flow of... - NARA - 294347.jpg 3,000 × 2,347; 1.5 MB
A five-yard dipper excavating in clay overburden - NARA - 294281.jpg 3,000 × 2,444; 809 KB
A four-view panorama of east excavation area from east bank cofferdam - NARA - 294195.jpg 3,000 × 2,292; 1,011 KB
A four-view panorama of east excavation area from east bank cofferdam - NARA - 294196.jpg 3,000 × 2,356; 1.2 MB
A four-view panorama of east excavation area from east bank cofferdam - NARA - 294197.jpg 3,000 × 2,341; 1.02 MB
A four-view panorama of east excavation area from east bank cofferdam - NARA - 294198.jpg 3,000 × 2,302; 1.01 MB
A four-yard bucket of mortar being dumped on bedrock - NARA - 294148.jpg 2,454 × 3,000; 631 KB
A general view looking north across the west side showing the westmix concrete plant, placing trestles and crane... - NARA - 294229.jpg 3,000 × 2,329; 1.44 MB
A general view looking south across the west side, showing the Westmix concrete plant, placing trestles and crane... - NARA - 294226.jpg 3,000 × 2,324; 1.29 MB
A general view looking west across the damsite - east excavation pit with conveyor feeder in foreground, cofferdams... - NARA - 294161.jpg 3,000 × 2,372; 1.07 MB
A general view of bedrock uncovered in the area between blocks 31 and 40. This is the channel section through which... - NARA - 294324.jpg 3,000 × 2,206; 1.38 MB
A general view of the damsite from the west bank showing concrete placing trestles on lower right, construction at... - NARA - 294227.jpg 3,000 × 2,340; 1.36 MB
A general view of the east forebay slope showing the crack which developed near the top of the slope. The bench to... - NARA - 294332.jpg 3,000 × 2,354; 958 KB
A general view of the east side showing the cofferdam and exposed rock on the abutment - NARA - 294221.jpg 3,000 × 2,423; 1.54 MB
A general view of the slide on the east forebay slope - NARA - 294314.jpg 3,000 × 2,341; 1.4 MB
A general view of the slide on the east forebay slope showing unwatering pumps mounted on barges. Water surface in... - NARA - 294334.jpg 3,000 × 2,185; 909 KB
A general view of the west side showing concrete plant and placing trestles. Block 40 is shown in the foreground... - NARA - 294219.jpg 2,345 × 3,000; 1.14 MB
A group of concrete blocks near the east end of the dam - NARA - 294349.jpg 3,000 × 2,345; 1.13 MB
A night view of the Westmix concrete plant, placing trestles and concrete blocks - NARA - 294220.jpg 3,000 × 2,343; 882 KB
A panorama of the west side - NARA - 293980.jpg 3,000 × 2,295; 1.05 MB
A panorama of the west side - NARA - 293981.jpg 3,000 × 2,280; 1.07 MB
A panorama of the west side - NARA - 293982.jpg 3,000 × 2,311; 1.06 MB
A part of the west abutment - NARA - 294077.jpg 2,420 × 3,000; 1.38 MB
A portable crane-car handling form panels - NARA - 294325.jpg 2,414 × 3,000; 958 KB
A portion of block P4B ready for concrete - NARA - 294216.jpg 3,000 × 2,142; 1 MB
A portion of the 110 ft. diameter caisson surrounding pier 2 of the highway bridge. Steel sheet piling forms the... - NARA - 294225.jpg 2,319 × 3,000; 996 KB
A portion of the 60-inch 1-1-2 mile long belt conveyor in the near foreground, the 3,000 ft. cellular steel... - NARA - 293983.jpg 3,000 × 2,062; 987 KB
A portion of the west mixing plant under construction, showing one of the four 4-cubic yard mixers - NARA - 294052.jpg 2,312 × 3,000; 612 KB
A rigger attaching suspenders to a pair of the 2-1-2 inch suspension cables of the sand and gravel conveyor bridge - NARA - 294019.jpg 2,461 × 3,000; 506 KB
A rigger attaching suspenders to a pair of the 2-1-2 inch suspension cables of the sand and gravel conveyor bridge - NARA - 294021.jpg 2,360 × 3,000; 476 KB
A scene in the east side excavation area - NARA - 294050.jpg 2,336 × 3,000; 1.12 MB
A slide on the east forebay slope - NARA - 294095.jpg 3,000 × 2,412; 1.54 MB
A slide on west end of east forebay slope - NARA - 294070.jpg 3,000 × 2,175; 1.22 MB
A three-view panorama of the development from top of east abutment - NARA - 294204.jpg 3,000 × 2,283; 997 KB
A three-view panorama of the development from top of east abutment - NARA - 294205.jpg 3,000 × 2,265; 1.25 MB
A three-view panorama of the development from top of east abutment - NARA - 294206.jpg 3,000 × 2,259; 903 KB
A view of operations at block 40. The railroad for delivery of concrete is shown to the right, on top of cofferdam... - NARA - 294253.jpg 2,338 × 3,000; 927 KB
A view of the south end of the east slope - NARA - 293975.jpg 3,000 × 2,334; 1.35 MB
A view of the west side concrete placing trestles showing cranes, cars and concrete buckets for transporting and... - NARA - 294249.jpg 3,000 × 2,334; 1.34 MB
A view of the west side taken after the first spring thaw. Upstream placing trestle is shown extended to the edge of... - NARA - 294250.jpg 3,000 × 2,347; 1.17 MB
Airplane tripper stacker at mixer storage pile, sand and gravel system - NARA - 293968.jpg 3,000 × 2,431; 740 KB
An electric welder - NARA - 293969.jpg 3,000 × 2,407; 625 KB
An upstream three-view progression picture showing development of the east bank area - NARA - 294192.jpg 3,000 × 2,360; 1.02 MB
An upstream three-view progression picture showing development of the east bank area - NARA - 294193.jpg 3,000 × 2,288; 1.01 MB
An upstream three-view progression picture showing development of the east bank area - NARA - 294194.jpg 3,000 × 2,408; 1 MB
Another view of bedrock on the west end, showing cleanup operations under way with a 5-yard electric shovel loading... - NARA - 293994.jpg 3,000 × 2,214; 1.11 MB
Another view of operations behind the cofferdam section 'E' (see 702). The men overhead are placing the floor on the... - NARA - 293998.jpg 3,000 × 2,293; 1.1 MB
Area between blocks 31 and 40, lower one-half of dam foundation - NARA - 294330.jpg 3,000 × 2,325; 1.39 MB
Area between blocks 31 and 40, upper one-half of dam foundation - NARA - 294331.jpg 3,000 × 2,336; 1.41 MB
Arranging wind bracing for suspension bridge - NARA - 294022.jpg 2,453 × 3,000; 592 KB
Arranging wind bracing for suspension bridge - NARA - 294023.jpg 3,000 × 2,471; 722 KB
Back of the west cofferdam, under construction. Sand and gravel bridge overhead - NARA - 294089.jpg 3,000 × 2,418; 1.27 MB
Bedrock exposed in block 40, with heavy timber bracing overhead - NARA - 294155.jpg 3,000 × 2,090; 604 KB
Bedrock for the west end of the dam - NARA - 293988.jpg 3,000 × 2,209; 1.18 MB
Bedrock for the west end of the dam with upstream slope in the distance - NARA - 293989.jpg 3,000 × 2,181; 1.06 MB
Bedrock formation in block 24-E - NARA - 294237.jpg 3,000 × 2,424; 1.18 MB
Bedrock in block 12G prepared for concrete - NARA - 294152.jpg 3,000 × 2,355; 628 KB

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