Tunnel #1 was dug to carry water from Huntington Lake to the top end of the penstocks going to Powerhouse #1. This view of a working face in that tunnel was taken in March of 1913.
Hydroelectric power-plants Tunnels Construction Construction crew
Place
Big Creek (Calif.) Fresno County (Calif.)
Source
Southern California Edison Photographs and Negatives Story of Big Creek Southern California Edison Photographs and Negatives, Huntington Digital Library
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