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|217k||USED Pacific underway, 3 September 1937, in San Francisco Bay, near her builders yard, Bethlehem Steel Corp. Ltd., San Francisco, CA.
US Army Corps of Engineers photo
|140k||Immediately following the 1980 Mount St. Helens eruption, U.S. Army Corps of Engineers hopper dredges USACE Biddle
(left), USACE Harding (center) and USACE Pacific (right), and a Port of Portland pipeline dredge worked to restore the shipping channel in
the Columbia River. Ships were stranded in the port or were aground after mud flows from Mount St. Helens roared down the Cowlitz River and filled the Columbia channel
overnight, decreasing it from its previous 40-foot depth to a mere 14 feet. For nine miles up and downriver, nothing moved but mud and water.
US Army Corps of Engineers Portland District photo
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