Culvert Maintenance. Original caption: 45-54: A oil-burning heating torch used inside of culvert to prevent icing. The ends of the culverts were coverd to conserve the heat. Original caption: 45-55: Water flows through the culvert and trenches protected by covering of plywood. State: Alaska.
Size: 7019px × 5100px
Photo credit: © NB/PR / Alamy / Afripics
License: Licensed
Model Released: No
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