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  • All fields: Excavation--Colorado--1940-1950.
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    • Clear Creek - close up from ground shovel bucket dumping in 800ft bore

    • A man works in a a highway tunnel on Highway 6 in Jefferson County or Clear Creek County, Colorado. Shows a steam shovel and a dump truck. Letters read: "Ed. H. Honnen Construction Co."
    • Construction workers--Colorado--1940-1950.; Dump trucks--Colorado--1940-1950.; Excavation--Colorado--1940-1950.; Road construction--Colorado--1940-1950.; Steam shovels--Colorado--1940-1950.; Tunnels--Colorado--1940-1950.
    • [between 1940 and 1950?]
    • Laying 12 inch main at Howell Avenue

    • Workers place wooden braces against the wall of a narrow ditch possibly in Jefferson County Colorado. A mechanical ditch excavating machine operates in front of the work crew. Sections of pipe are arranged along the side of the road in the distance.
    • Trenching machinery--Colorado--1940-1950.; Pipes (Conduits)--Colorado--1940-1950.; Construction workers--Colorado--1940-1950.; Excavation--Colorado--1940-1950.; Waterworks--Colorado--1940-1950.
    • 1941 February 18

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