Keywords: ncgs usgs sketch drawing text writing North Carolina Geological Survey, "Economic Papers, No. 14, The Mining Industry in North Carolina in 1906," 1907, by Joseph Hyde Pratt, Plate V, facing p. 28. digital.ncdcr.gov/cdm/compoundobject/collection/p16062col... economicpapers1215unse_0184 North Carolina Geological Survey, "Economic Papers, No. 14, The Mining Industry in North Carolina in 1906," 1907, by Joseph Hyde Pratt, Plate V, facing p. 28. digital.ncdcr.gov/cdm/compoundobject/collection/p16062col... economicpapers1215unse_0184 |