Visual Materials
Portal Powerhouse - Forebay
- Description
- Portal Powerhouse - Forebay - Inlet channel from vertical shaft shows blanket in place.
- Date
- 10/6/1955
- Call number
- photCL SCE 02 - 43767
Visual Materials
Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
Visual Materials
Portal Powerhouse - Forebay - Inlet channel from top of vertical shaft.
photCL SCE 02 - 43768
Visual Materials
Portal Powerhouse - Portal Forebay - Looking west - shows cutting of channel to vertical shaft.
photCL SCE 02 - 43856
Visual Materials
Portal Powerhouse - Portal Forebay - Looking up shaft, shows inlet tunnel intersection with shaft, temporary ladder.
photCL SCE 02 - 43791
Visual Materials
Portal Powerhouse - Forebay - Progress of excavation in intake channel to vertical shaft.
photCL SCE 02 - 43703
Visual Materials
Portal Powerhouse - Portal Forebay - Bottom of vertical shaft in adit, shows upper portion of concrete bulkhead in adit.
photCL SCE 02 - 43790
Visual Materials
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