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The dredge head of the Army Corps of Engineers Dredge Biddle at the mouth of the Columbia River Picture

The dredge head of the Army Corps of Engineers Dredge Biddle at the mouth of the Columbia River

The dredge head of the Army Corps of Engineers Dredge Biddle at the mouth of the Columbia River. This huge machine had the capacity to operate at 4 knots, load 3000 cubic yards in 40 minutes and discharge the same in 20 minutes.

Photo Category: Historic Fisheries - Salmon
Photo Date: 1970 August

Author: NMFS/Northwest Fisheries Science Center; Pacific Northwest Collection/ NOAA

License: Public Domain Mark 1.0 (Public domain)
640 x 424 41.00 KB
1280 x 848 139.36 KB
1920 x 1272 284.66 KB
2546 x 1686 498.51 KB
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Added On
17th October 2015
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