TY  - BOOK
AU  - Koehler, J. R.
AU  - Tadolini, Stephen C.
CN  - I 28.27:
CY  - [Washington, D.C.?] :
DA  - 1995.
ID  - 195551
KW  - Pillaring (Mining)
KW  - Longwall mining
N1  - Distributed to depository libraries in microfiche.
N1  - Shipping list no.: 96-0161-M.
PB  - U.S. Dept. of the Interior, Bureau of Mines,
PP  - [Washington, D.C.?] :
PY  - 1995.
T1  - Practical design methods for barrier pillars
TI  - Practical design methods for barrier pillars
VL  - 9427
ER  -