TY  - BOOK
T1  - Geologic and engineering data acquisition for underground coal mine ground control /
DA  - 1980.
CY  - Cambridge, Mass. :
CY  - Springfield, Va. :
AU  - Alison, David R.
AU  - Ohlsson, Edvard T.
AU  - Whitney, Kevin V.
CN  - TN288 .A4
CN  - TN288
PB  - Arthur D. Little, Inc. ;
PB  - reproduced by National Technical Information Service, U.S. Dept. of Commerce,
PP  - Cambridge, Mass. :
PP  - Springfield, Va. :
PY  - 1980.
N1  - Contract no. J0395010.
N1  - Bureau of Mines Open File Report 89-80.
ID  - 52759
KW  - Ground control (Mining)
KW  - Coal mines and mining
TI  - Geologic and engineering data acquisition for underground coal mine ground control /
ER  -