Visual Materials
Portal Powerhouse - Portal Forebay
- Description
- Portal Powerhouse - Portal Forebay - Looking up shaft, shows inlet tunnel intersection with shaft, temporary ladder.
- Date
- 10/17/1955
- Call number
- photCL SCE 02 - 43791
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 vertical shaft shows blanket in place.
photCL SCE 02 - 43767
Visual Materials
Portal Powerhouse - Forebay - Looking up inlet channel, showing excavation progress.
photCL SCE 02 - 43548
Visual Materials
Portal Powerhouse - Portal Forebay - Looking west - shows cutting of channel to vertical shaft.
photCL SCE 02 - 43856
Visual Materials
Portal Powerhouse - Forebay - Inlet channel from top of vertical shaft.
photCL SCE 02 - 43768
Visual Materials
Portal Powerhouse - Forebay - drilling final round in short tunnel inlet channel.
photCL SCE 02 - 43771
Visual Materials
Portal Powerhouse - Forebay - Section of left side of inlet channel adjacent to tunnel.
photCL SCE 02 - 43782