Lead-Zinc District of Illinois Historical Document Folder: Gray Property - USGS Detailed Sample Study of Drill Holes File: Gray 7.pdf UID: 636
Dates
Dataset Reference Date
2015-09-28
Info Date
1943-02-25
Info Date
1943-03-15
Summary
Historical Lead-Zinc District Document from Industrial Mineral Section Records Folder: Gray Property - USGS Detailed Sample Study of Drill Holes File: Gray 7.pdf Type: Log Author: Agnew, A.F. UID: 636
Summary
Historical Lead-Zinc District Document from Industrial Mineral Section Records Folder: Gray Property - USGS Detailed Sample Study of Drill Holes File: Gray 7.pdf Type: Log Author: Agnew, A.F. UID: 636