Lead-Zinc District of Illinois Historical Document Folder: Thinning Data on McGregor (Trenton) and Drab (From Churn Drilling) File: Isopach data.pdf UID: 986
Dates
Dataset Reference Date
2015-09-28
Summary
Historical Lead-Zinc District Document from Industrial Mineral Section Records Folder: Thinning Data on McGregor (Trenton) and Drab (From Churn Drilling) File: Isopach data.pdf Type: Field Notes UID: 986
Summary
Historical Lead-Zinc District Document from Industrial Mineral Section Records Folder: Thinning Data on McGregor (Trenton) and Drab (From Churn Drilling) File: Isopach data.pdf Type: Field Notes UID: 986
Lead-Zinc District of Illinois Historical Document Folder: Thinning Data on McGregor (Trenton) and Drab (From Churn Drilling) File: Isopach data.pdf UID: 986