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This is a diamond drill rig in operation. A compressed-air motor rapidly spins the hollow shaft, down which water is forced to cool the bit, and carry away the cuttings. The core specimen rises in the hollow drill stem as the bit cuts downward....
2014-04-19
Compressed air supplies the force to the power cylinder of these duplex piston displacement grout pumps, thus giving the operator a sensitive control over the grouting operation, as well as affording great simplicity and flexibility. Grouting of a...
2014-04-19
This is a battery of grout pumps working outside during the spring of 1939. Grout is a very thin mixture of neat cement and water. It is forced under great pressure into other intersticed rock crevices and seams thru grout holes drilled into the...
2014-04-19
This view is looking west over part of the town of Grand Coulee, and Coulee center, as it appeared in 1937. During the CBI contract the towns around the dam were congested to the point that it was almost impossible to find a room in which to...
2014-04-19
2014-04-19
It was a hundred miles to the nearest city. People had to take a semblance of society with them to the dam site. This took the usual ephemeral form of a frontier village, yet contained all the paradoxes of the more complex civilization beyond...
2014-04-19
"B" Street in Grand Coulee was once synonymous for all that was licentious and ribald, but eventually law and order assumed the upper hand; gravel replaced the mud and muck in the street, sidewalks were installed and it was compelled to settle...
2014-04-19
This view is looking northward across the dam site. In the right foreground is the town of Coulee Heights, and in the left center is that of Grand Coulee and Coulee Center. In the center of the picture is the excavation spoil bank, now almost...
2014-04-19
Here, early in the spring of 1934, the Western Construction Company is starting excavation for the west pier of the highway bridge, with a clamshell bucket working behind a wooden cofferdam. In the foreground is a similar arrangement for the east...

2014-04-19
This is a view of the sheet steel cofferdam sunk around pier #2 after the east bank of the river had slipped. The pressure from the material on the bank has been removed, and the additional ballast and footing of concrete poured. The total cost...
2014-04-19
This scene shows the final clearing of bedrock inside the caisson pier of pier #2 on the highway bridge.
2014-04-19
This shows a section of the spillway bucket before backfilling along the lower lip. The bottom of the bucket is at elevation 869.88, and the top of the lower lip at elevation 900. Since three contraction joints occurred in the curved portion of...
2014-04-19
This shows approximately a thousand foot section of the spillway bucket just before cutting of the downstream arm of the cofferdam, resulting in the permament flooding of this area. On June 01, 1942 the first water passed over the drumgates in the...
2014-04-19
This night view of Westside operations during the winter of 1935-1936 shows little activity because of the intense cold. Sub-zero weather had caused sludge ice to lift up the surface river ice and freeze there until it was as deep as thirty feet...
2014-04-19
2014-04-19
This is a scene during night construction behind the cofferdam on the east side. Here it appeared to one as a huge stage setting from some Gargantuan drama, lighted by hundreds of gleaming globes, where a myriad of tiny objects moved from among...
2014-04-19
This is a night scene as viewed from above the west abutment. As the width of the dam narrowed toward the top the work became more and more concentrated, and the scene lost much of its immensity, but thus while it lost in illusory fancy it gained...
2014-04-19
In its length of 151 miles the Columbia River Reservoir, now called Lake Roosevelt, has a little over 500 miles of shoreline, ranging from sheer granite and basalt cliffs to shifting sand banks and wooded mountain slopes. Dr. C. E. Magnusson,...
2014-04-19
Those who have seen an uncleared reservoir with its unsightly jumble of floating debris and drowned timber can well appreciate the beauty and cleanliness of the Columbia River Reservoir afforded by these thorough logging and clearing operations....
2014-04-19
A view of the narrow gorge of the Kettle River just before it empties into the Columbia, taken before flooding of the reservoir area.
2014-04-19
By June of 1942 the rising waters of the reservoir had backed the Kettle River up to a sufficient depth to permit removal of the Kettle River railroad bridge by barges and tugs. Here the power tug Paul Bunyan is maneuvering a barge under the last...
1942-06-01
2014-04-19
This scene is typical of most of the Grand Coulee Dam Reservoir. Previous to the formation of Lake Mead by Boulder Dam the Gatum Reservoir in Panama was the largest man-made reservoir, having a capacity of 4,413,000 acre feet of storage. Fort...
2014-04-19
This is a section of the Kettle River railroad bridge on its way to Coulee Dam for dismantling and salvage.
2014-04-19
This is a scene during the operations of moving the steel spans of the old railroad bridge from marcus, Wn. to Coulee Dam in February of 1942. Note the high water mark on the bridge trusses indicating the height to which the water in the...
1942-02-01
2014-04-19
In the spring of 1941 construction of a new highway bridge, and also a railroad bridge, was started from the south bank of the Columbia River at Kettle Falls. The highway bridge was to replace the one in the foreground, which was not high enough...

2014-04-19
A view of the camp site at the Little Dalles during the winter of 1940. On Oct. 20, 1933 the Columbia Basin Commission authorized the Wallace Aerial Surveys of Spokane to make an aerial survey of the lands along the Columbia River from the Grand...

2014-04-19
A floating camp was used in clearing inaccessible areas of the reservoir. This camp, and those on land were fitted with all the comforts and modern facilities available. The peak of employment on the clearing operations was approximately 2,600...
2014-04-19
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