Technical papers. 711. Carbonizing properties of no. 5 block-bed coal from no. 5 mine, Montcoal, Raleigh County, W. Va., and of Pocahontas no. 6-bed coal from Birdseye mine, Sewell, Fayette County, W. Va. [with list of publications on survey of carbonizing properties of American coals]; by J. D. Davis, D. A. Reynolds. R. E. Brewer, D. E. Wolfson, and W. H. Ode.