Fluorspar District of Illinois Historical Document Folder: Hill Property File: Illinois Fluorspar Investigations II - I Hill Property.pdf UID: 282
Dates
Dataset Reference Date
2015-09-28
Info Date
1945-02-01
Summary
Historical Fluorspar District Document from Industrial Mineral Section Records Folder: Hill Property File: Illinois Fluorspar Investigations II - I Hill Property.pdf Type: Report Author: Grogan, R. M. UID: 282
Summary
Historical Fluorspar District Document from Industrial Mineral Section Records Folder: Hill Property File: Illinois Fluorspar Investigations II - I Hill Property.pdf Type: Report Author: Grogan, R. M. UID: 282