Russell Lee, with some heavy-duty machinery:
December 1941. "Threshing machine. Canyon County, Idaho. Black Canyon reclamation project in a dry land area, administered by U.S. Department of Interior, Bureau of Reclamation."
December 1941. Shasta County, California. "Dump truck which carries materials for use in construction of Shasta Dam. This truck uses butane instead of gasoline because of the extra power butane gives."
[Photos: Shorpy/Russell Lee]
Mick Hartley 
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