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
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| Added On | 17th October 2015 |
| Viewed | 10 viewed |