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Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - Progress - powerhouse construction, mobile crane excavating foundation for by-pass section of building.
Type: Visual Materials(Opens in new tab)
Date: 8/23/1955
Call number: photCL SCE 02 - 43685
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
Visual Materials
Portal Powerhouse - By-pass section of structure near end of 1955 construction.
photCL SCE 02 - 43778
Portal Powerhouse
Visual Materials
Portal Powerhouse - Progress: Forming and placing reinforcing steel for by-pass bend anchor.
photCL SCE 02 - 43741
Portal Powerhouse - Forebay
Visual Materials
Portal Powerhouse - Forebay - View from left abutment showing completed foundation preparation under a portion of rock fill section. Shovel and Dozer excavating in upstream cutoff.
photCL SCE 02 - 43304
Portal Powerhouse
Visual Materials
Portal Powerhouse - Construction progress of powerhouse.
photCL SCE 02 - 43757
Portal Powerhouse
Visual Materials
Portal Powerhouse - excavating tailrace channel to final grade in section up-stream from Highway Bridge.
photCL SCE 02 - 43689
Portal Powerhouse
Visual Materials
Portal Powerhouse - Excavating rock shot out of 15' plug. Left remaining at bottom of surge chamber shaft until after tunnel outage. D-4 [?] in tunnel loading into skip operated by Bay Cities Crane at top of shaft.
photCL SCE 02 - 44804