Size distribution of diesel particulate matter in a non-metal mine.
Proceedings of the Fifth International ETH-Conference on Nanoparticle Measurement, Zurich, Switzerland, August 6-8, 2001. Mayer A, ed., Zurich, Switzerland: ETH Zürich (Swiss Federal Institute of Technology), 2001 Sep; :40
Exposure of underground miners to diesel particulate matter (DPM) has recently received considerable attention from both research and legislation communities. This is not surprising, given that underground miners, on average, are exposed to substantially higher concentrations of DPM than workers in any other occupation. An additional Concern is the size distribution of diesel particles, which are found to be in nano (D50 < 50 nm) and ultrafine (D50 < 100 nm) ranges. Considerable toxicological evidence supports the idea that nano and ultrafine particles have a higher toxicity when compared to the same quantity of larger particles. Reducing miner exposure requires curtailing DPM emissions at their source. At their current stage of development, diesel particulate filters (DPF), have been found to be a promising technology which needs to be optimized and proven for mine applications. The Diesel Emissions Evaluation Program (DEEP), a North American industry-Iabor-government research consortium, currently sponsors several projects designed to evaluate DPF for underground mining applications. The study presented in this paper was part of a DEEP project on the long-term field evaluation of diesel particulate filters at Noranda-Brunswick Mining Divisions metal underground mine. The objective of the project was to ascertain the potential of DPF to curtail DPM concentrations and evaluate their suitability for underground mining applications. The project was based on periodic measurements of tailpipe DPM find gaseous emissions and the so-called isolated zone study whose objective was to investigate the effects of aftertreatment technologies on the concentration and size distribution of aerosols in mine air. This summary and the attached presentation show the results of the isolated zone study.
Diesel-emissions; Underground-mining; Filtration; Mining-industry; Air-quality; Occupational-health; Filters; Diesel-exhausts; Underground-miners; Mining-equipment; Diesel-engines; Nanotechnology
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
Abstract; Conference/Symposia Proceedings
Proceedings of the Fifth International ETH-Conference on Nanoparticle Measurement, Zurich, Switzerland, August 6-8, 2001