Bulletins. 515. Coal deposits in Deep River field. Chatham, Lee, and Moore Counties, N. C.: [Reserves, petrographic and chemical characteristics); 1, Investigation of field and estimated reserves of coal, by Albert L. Toenges, Louis A. Turnbull, Joseph J. Shields, and Wilbur A. Haley; 2, Petrography of Sumnock coal, by B. C. Parks; 3. Chemical analyses of coal, Deep River field, N. C., by Roy F. Abernethy; Appendix, Drill logs and chemical analyses of cores.

Tools