TY  - BOOK
T1  - Analysis of accidents related to falls of ground in metal and nonmetal mines, 1972-73 /
DA  - [1975]
CY  - [Washington] :
AU  - Seals, E. D.
AU  - Speirer, Robert A.,
CN  - TN295 .U58 no.1009
CN  - TN295
PB  - Mining Enforcement and Safety Administration,
PP  - [Washington] :
PY  - [1975]
ID  - 118435
KW  - Mine subsidences.
KW  - Mine safety.
TI  - Analysis of accidents related to falls of ground in metal and nonmetal mines, 1972-73 /
ER  -