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A platform for research: civil engineering, architecture and urbanism
Investigation of Douglas fluorite property, Pope county, Ill
Property is in Empire district; production has been about half of 72,000 tons credited to district; output has been from normal fissure veins, along which there has been local replacement of wall rock by fluorite; history; development; Bureau of Mines work was confined to Douglas lease; core drilling; drill hole logs.
Investigation of Douglas fluorite property, Pope county, Ill
Property is in Empire district; production has been about half of 72,000 tons credited to district; output has been from normal fissure veins, along which there has been local replacement of wall rock by fluorite; history; development; Bureau of Mines work was confined to Douglas lease; core drilling; drill hole logs.
Investigation of Douglas fluorite property, Pope county, Ill
U S Bur Mines -- Report Investigations
Bishop, O.M. (author) / Needham, A.B. (author)
1949
13 pages
Supp Plates
Report
English
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