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Text and Columbine Mine (Weld County, Colo.) and Coal mines and mining by Amicarella, Lawrence, 1902-1988 of Weld County (Colorado, United States, North America) (civil) and Colorado (United States, North America) (first order administrative divisions) and Columbine Mine (Weld, Colorado, United States, North America) (mine) and Eagle Mine (Weld, Colorado, United States, North America) (mine)
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