Lead-Zinc District of Illinois Historical Document Folder: Gray Property - USGS Detailed Sample Study of Drill Holes File: Gray 26.pdf UID: 624
Dates
Dataset Reference Date
2015-09-28
Info Date
1943-04-27
Info Date
1943-07-15
Summary
Historical Lead-Zinc District Document from Industrial Mineral Section Records Folder: Gray Property - USGS Detailed Sample Study of Drill Holes File: Gray 26.pdf Type: Log Author: Heyl, A.V. UID: 624
Summary
Historical Lead-Zinc District Document from Industrial Mineral Section Records Folder: Gray Property - USGS Detailed Sample Study of Drill Holes File: Gray 26.pdf Type: Log Author: Heyl, A.V. UID: 624