Lead-Zinc District of Illinois Historical Document Folder: Gray Property - USGS Detailed Sample Study of Drill Holes File: Gray 30.pdf UID: 629
Dates
Dataset Reference Date
2015-09-28
Info Date
1943-05-13
Info Date
1943-11-30
Summary
Historical Lead-Zinc District Document from Industrial Mineral Section Records Folder: Gray Property - USGS Detailed Sample Study of Drill Holes File: Gray 30.pdf Type: Log Author: Alleman, H.R. UID: 629
Summary
Historical Lead-Zinc District Document from Industrial Mineral Section Records Folder: Gray Property - USGS Detailed Sample Study of Drill Holes File: Gray 30.pdf Type: Log Author: Alleman, H.R. UID: 629