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Manganese, iron, and barite deposits of the James River-Roanoke River district, Virginia

During the period 1940-1942 the United States Geological Survey made a geologic study of the manganese deposits of the James River-Roanoke River district, in the general vicinity of Lynchburg, Va. (fig. 1), as part of its program of strategic minerals investigations.  This work was done by the writer and supervised by D. F. Hewett.  John Rodgers and W. R. Wagner assisted during part of the project

Total intensity aeromagnetic map of Clay County, Indiana

No abstract available.

Coal resources map of Wyoming

No abstract available.