TY  - BOOK
AU  - Ahola,M.P.
AU  - Donato,D.A.
AU  - Kripakov,Nicholas P.
TI  - Application of numerical modeling techniques to analysis of cutter roof failure
T2  - Information circular (Bureau of Mines)
PY  - 1991///
CY  - Pittsburgh, Panama
PB  - U.S. Dept. of the Interior, Bureau of Mines
KW  - Mine roof control
KW  - Mathematical models
ER  -