Walter E. Heinrichs, Jr. mining collection: Calvert Exploration Co. - Recon and Resistivity Surveys
Dates
Dataset Reference Date
2012-07-12
Summary
Documents from the Walter E. Heinrichs, Jr. mining collection. Description: Cu, Ag, Mo-Preliminary Reconnaissance and Geothermal Resistivity Survey Reports- field notes �maps- assays.
Summary
Documents from the Walter E. Heinrichs, Jr. mining collection. Description: Cu, Ag, Mo-Preliminary Reconnaissance and Geothermal Resistivity Survey Reports- field notes �maps- assays.