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Visual Materials

Portal Powerhouse

Description
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.
Type
Visual Materials(Opens in new tab)
Date
Sep. 1956
Call number
photCL SCE 02 - 44804
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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