Bulletins. 510. Carbonizing properties, Britlsd Columbia, Matanuska Valley (Alaska), and Washington coals and blen is of 6 of them with lower Sunnyside (Utah) coals [with Publications on, survey of carbonizing properties of American coals]; by J. D. Davis, D. A. Reynolds, R. E. Brewer, B. W. Naugle, D. E Wolfson, F. H. Gibson, and G. W. Birge.