Lead-Zinc District of Illinois Historical Document Folder: Geology Aids Prospecting for Zinc File: Memo.pdf UID: 831
Dates
Dataset Reference Date
2015-09-28
Info Date
1948-12-20
Summary
Historical Lead-Zinc District Document from Industrial Mineral Section Records Folder: Geology Aids Prospecting for Zinc File: Memo.pdf Type: Memorandum/Notes Author: Lamar, J. E.; Grogan, R. M. UID: 831
Summary
Historical Lead-Zinc District Document from Industrial Mineral Section Records Folder: Geology Aids Prospecting for Zinc File: Memo.pdf Type: Memorandum/Notes Author: Lamar, J. E.; Grogan, R. M. UID: 831