TY  - RPRT
TI  - Economic and environmental evaluations of extractable coal resources conducted by the U. S. Geological Survey
AU  - M.S. Ellis
AU  - T.J. Rohrbacher
AU  - M.D. Carter
AU  - C. L. Molnia
AU  - L. M. Osmonson
AU  - D.C. Scott
PY  - 2001
DO  - 10.3133/fs10901
UR  - https://pubs.usgs.gov/publication/fs10901
ID  - fs10901
ER  -