Using Barriers to Reduce Dust Exposure of Longwall Face Workers |
Common terms and phrases
air split airflow patterns angle iron barrier and spray barrier extending BARRIERS TO REDUCE baseline Brattice BuMines Bureau of Mines coal combination barrier-spray system Configuration E Configuration control shearer conventional system conveyor belting cooling water sprays Cutting direction cutting drums discharge from locations dust concentrations Dust Configuration Dust Control ented EXPOSURE OF LONGWALL external spray face area face personnel Foster-Miller full shearer-clearer gate splitter arm gearhead gobside passive barrier gobside passive-barrier gusset headgate drum headgate end headgate splitter arm Headgate Tailgate laboratory testing LONGWALL FACE WORKERS longwall shearers mounted panline passive-barrier system pct lower Preliminary testing REDUCE DUST EXPOSURE reduction in methane rier roof supports roof-support canopies shearer body shearer operators shearer-clearer system splitter arm design Spray bank spray manifolds Spring support spring-loaded Steel system tested tail-to-head cutting tailgate splitter arm tions underground evaluation underground field evaluations underground testing upwind velocity venturi effect walkway water spray system welded