73598374
May 12, 1986
Aug 11, 1987
MONITORING AND CONTROL APPARATUS, NAMELY, COMPUTER WORK STATIONS COMPRISING KEYBOARDS, PRINTERS, MODEMS, DISPLAYS AND PROGRAMS (SOFTWARE) THEREFOR FOR MONITORING AND DETECTING HAZARDS IN MINES, FOR CONTROLLING MACHINERY AND EQUIPMENT IN RESPONSE TO DETECTED HAZARDS AND FOR LOGGING AND REPORTING MONITORED EVENTS
Electrical and Scientific Apparatus