Visual Materials
Big Creek, Huntington Lake Dams - Portal Forebay
- Description
- Big Creek, Huntington Lake Dams - Portal Forebay - Drilling 1st round of holes in portal face of short tunnel connecting open cut channel to Ward Tunnel through vertical shaft in adit.
- Date
- 9/29/1955
- Call number
- photCL SCE 02 - 43750






