Presentation on theme: "The Effects of Ventilation Controls and Environmental Cabs on Diesel Particulate Matter Concentrations in Some Limestone Mines James D. Noll, Larry Patts,"— Presentation transcript:
The Effects of Ventilation Controls and Environmental Cabs on Diesel Particulate Matter Concentrations in Some Limestone Mines James D. Noll, Larry Patts, Roy Grau CDC NIOSH Pittsburgh Research Center
Underground Metal/nonmetal mines are implementing different types of control technologies to apply with the final PEL 160 μ g/m 3 TC TC (5040)* EC(5040)* x (TC(5040) – blank)/EC2(5040) a * - personal sample a – area sample EC(5040)* > 160
The ventilation packages used in these two mines did not reduce the DPM concentration below the final limit but reduced the DPM significantly to could allow for a variety of other controls to be used to reach the final PEL.
Measured DPM concentration inside and outside of two cabs (older and newer unit).
Cab were over 90% efficient when the doors and windows were shut.
Not all miners can be in enclosed cabs. Other types of controls (alternative fuels, dpfs, maintenance, newer engines, ventilations, etc.) Administrative controls e.g. limiting time of some miners in high concentrations of DPM