REFINE     Who What Where When     REMOVE Boulder 1929 WHAT Mines and mineral resourc … (2) Mines and mineral resourc … (1) WHERE Sugarloaf (1) Tungsten (1)

REFINE  Browse All : Images of Boulder from 1929 1-2 of 2 Map of J. S. Hill Place... [Armstrong, F. C., Drum... 1929 Boulder (Colo.)   Title Map of J. S. Hill Placer, Ogallalah, and Forest claims in Boulder County, Colorado Date Issued 1929 County Boulder Identifier mesc_miningMaps_43321200.jpg Longitudinal section, C... 1929 [Place of publication n...   Title Longitudinal section, Cold Spring Mine Date Issued 1929 County Boulder Identifier 43356000.tif 1-2 of 2

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