Walter E. Heinrichs, Jr. mining collection: O�Leary - Great American Minerals Corp.
Dates
Dataset Reference Date
2012-06-28
Start Date
1966
End Date
1967
Summary
Documents from the Walter E. Heinrichs, Jr. mining collection. Description: Vertical intensity Magnetic survey report-IP survey report maps-aerial photos field notes.
Summary
Documents from the Walter E. Heinrichs, Jr. mining collection. Description: Vertical intensity Magnetic survey report-IP survey report maps-aerial photos field notes.