Coal. Carbonizing properties and petrographic composition of Millers Creek bed coal from Consolidation no. 155 mine, Johnson County, Ky., and effect of blending Millers Creek coal with Pocahontas bed and Pittsburgh bed (Warden mine) coals; by A. C. Fieldner, J. D. Davis, R. Thiessen, W. A. Selvig, D. A. Reynolds, G. C. Sprunk, and C. R. Holmes.