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Development drilling on the Contact No. 4 claim, Gypsum Valley district, San Miguel County, Colorado (open access)

Development drilling on the Contact No. 4 claim, Gypsum Valley district, San Miguel County, Colorado

Report discussing development drilling on the contact no. 4 claim, Gypsum Vall District, San Miguel County, Colorado
Date: June 1953
Creator: Withington, Charles F. & Scott, J. B.
System: The UNT Digital Library