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Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - excavating tailrace channel to final grade in section up-stream from Highway Bridge.
Type: Visual Materials(Opens in new tab)
Date: 9/3/1955
Call number: photCL SCE 02 - 43689
Find out more: View in the Huntington Digital Library(Opens in new tab); View in the Library catalog(Opens in new tab)

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Portal Powerhouse - View from highway bridge showing excavation progress in tailrace channel section isolated by diverting flow into Potter Creek Tunnel.
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