Probability of making a successful mine escape while wearing a self-contained self-rescuer--a computer simulation / by John G. Kovac, Charles Vaught, and Michael J. Brnich, Jr (Report of investigations ; 9310)
Probability of making a successful mine escape while wearing a self-contained self-rescuer--a computer simulation / by John G. Kovac, Charles Vaught, and Michael J. Brnich, Jr