The interior of Mill Creek #3 Hydro Plant while under construction, showing the transformer and switchboard foundations completed. Sup't George W. Williams is in the white shirt.
Hydroelectric power-plants Construction Electric transformers
Place
Mentone (Calif.) San Bernardino County (Calif.)
Source
Southern California Edison Photographs and Negatives Edison Electric (EEC) Southern California Edison Photographs and Negatives, Huntington Digital Library
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