TY  - RPRT
TI  - Coal resources, production, and quality in the Eastern kentucky coal field: Perspectives on the future of steam coal production
AU  - J.C. Hower
AU  - J.K. Hiett
AU  - G.D. Wild
AU  - C.F. Eble
PY  - 1994
DO  - 10.1007/bf02259047
UR  - https://pubs.usgs.gov/publication/70017582
ID  - 70017582
ER  -