Contractor's sand and gravel plant. From top to bottom can be seen the 200 foot boom with hopper, the trestle supporting the pit conveyor belt, the water supply surge tank, the crusher house with conveyor, the gravel conveyor for the 6 x 3 inch aggregate, one end of the screen house and in the lower left hand corner part of the laminated wood tunnel.; Scope and content: Photograph from Volume Two of a series of photo albums documenting the construction of the Grand Coulee Dam and related work on the Columbia Basin Project.

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Size: 4417px × 5658px
Photo credit: © Tango Images / Alamy / Afripics
License: Licensed
Model Released: No

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