Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - Overturned Bay Cities Crane due to failure of outrigger blocking.
Type: Visual Materials(Opens in new tab)
Date: 6/5/1956
Call number: photCL SCE 02 - 44612
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 - Water trapped during night around powerhouse structure - due to failure of diversion pipe to carry increased seepage thru rack fill between tunnel diversion channel and bench at elevation.
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Portal Powerhouse - Progress - powerhouse construction, mobile crane excavating foundation for by-pass section of building.
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