TY  - GEN
AU  - Hackett,T.D.
AU  - Boreck,D.L.
AU  - Clarke,D.R.
TI  - Multislice mining for thick western coal seams
T2  - Information circular
PY  - 1989///
CY  - PGH [i.e. Pittsburgh] Pa.
PB  - U.S. Dept. of the Interior, Bureau of Mines
KW  - Coal mines and mining
KW  - West (U.S.)
ER  -