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Visual Materials

Portal Powerhouse - Forebay

Description: Portal Powerhouse - Forebay - Inlet channel from vertical shaft shows blanket in place.
Type: Visual Materials(Opens in new tab)
Date: 10/6/1955
Call number: photCL SCE 02 - 43767
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 - Forebay
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Portal Powerhouse - Forebay - Inlet channel from top of vertical shaft.
photCL SCE 02 - 43768
Portal Powerhouse - Portal Forebay - Looking west
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Portal Powerhouse - Portal Forebay - Looking west - shows cutting of channel to vertical shaft.
photCL SCE 02 - 43856
Portal Powerhouse - Portal Forebay
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Portal Powerhouse - Portal Forebay - Looking up shaft, shows inlet tunnel intersection with shaft, temporary ladder.
photCL SCE 02 - 43791
Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Progress of excavation in intake channel to vertical shaft.
photCL SCE 02 - 43703
Portal Powerhouse - Portal Forebay
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Portal Powerhouse - Portal Forebay - Bottom of vertical shaft in adit, shows upper portion of concrete bulkhead in adit.
photCL SCE 02 - 43790
Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - View of intake channel taken from vertical shaft. Absence of hard rock in area of excavation is here shown.
photCL SCE 02 - 43631