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Geology and coal deposits of the Dugger quadrangle, Sullivan County, Indiana
Frank Edward Kottlowski
1954, Coal Map 11
The accompanying maps and related material describing the geology and coal deposits of the Dugger quadrangle were prepared as part of a cooperative program to appraise the coal resources of Indiana initiated by the Division of Geology, Indiana Department of Conservation, and the Geological Survey, United States Department of the...
Geology and coal deposits of the Hymera quadrangle, Sullivan County, Indiana
Charles Eugene Wier
1954, Coal Map 16
The Hymera quadrangle is the fourth of a series of quadrangles that are being mapped by the Geological Survey, Indiana Department of Conservation, in cooperation with the United States Geological Survey, as part of a program of study and reappraisal of Indiana coal resources.  The field work was done by...