UNT Libraries Government Documents Department - 4 Matching Results

Search Results

Results: 1 - 4
open access

Geological and Geophysical Survey of Fluorspar Areas in Hardin County, Illinois

Description: From abstract: Pt 1. The present work seems to confirm the genetic theory previously published, namely that [Illinois Cave in Rock] deposits were formed by ascending solutions. These solutions probably followed minor fissures that connected below with larger fissures, which in turn probably connected with a major fault zone. It is believed that where such minor fissures extended upward only to the shale or other impervious cap rock, or were greatly reduced in size where they penetrated such bed… more
Date: 1944
Creator: Currier, Louis W.; Wagner, Oscar Emil, Jr. & Hubbert, M. King
Item Type: Refine your search to only Report
open access

Mining Methods and Costs at Crystal-Victory and Minerva Number 1 Fluorspar Mines of Minerva Oil Company, Hardin County, Illinois

Description: Report issued by the U.S. Bureau of Mines discussing mining costs and methods of fluorspar mines in Hardin County, Illinois. As stated in the summary, "it describes the exploration, development, and mining practices, giving costs of each. Transportation, equipment, power, labor, and other influencing factors also are discussed" (p. 1). This report includes tables, maps, illustrations, and photographs.
Date: 1960
Creator: Montgomery, Gill; Daly, J. J. & Myslinski, Frank J.
Item Type: Refine your search to only Report
open access

Mining, Milling, and Water-Control Methods, Rosiclare Fluorspar Works, Aluminum Company of America

Description: Report issued by the U.S. Bureau of Mines discussing mining methods of the Rosiclare Fluorspar mine and mill. As stated in the introduction, "the publication covers exploration, development, mining and milling practices, mine-drainage problems, and other activities and is presented as part of the Bureau of Mines series of publications on mining and milling practices in various parts of the United States" (p. 1). This report includes maps, tables, illustrations, and photographs.
Date: 1961
Creator: Schaefer, Ronald W.; Harrison, William H. & Myslinski, Frank J.
Item Type: Refine your search to only Report
Back to Top of Screen