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  • All fields: 24666-42
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    • Workers load powder into drilled holes via hose using compressed air

    • Miners (a man and a woman) load explosives into the wall of a tunnel at the Henderson Mine in Clear Creek County, Colorado. They wear hard hats with miners' lights.
    • AMAX, Inc.--Branches, chapters, etc.--1970-1980.; Henderson Mine (Colo.)--1970-1980.; Explosives--Colorado--Clear Creek County--1970-1980.; Miners--Colorado--Clear Creek County--1970-1980.; Mining--Colorado--Clear Creek County--1970-1980.;...
    • [between 1976 and 1980]

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