Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Laboratory evaluation of shield dust entrainment in high-velocity airstreams.

Authors
Listak-JM; Chekan-GJ; Colinet-JF
Source
2001 SME Annual Meeting, February 26-28, 2001, Denver, Colorado, Preprint 01-144. Littleton, CO: Society for Mining, Metallurgy, and Exploration, 2001 Feb; :1-9
Link
NIOSHTIC No.
20021367
Abstract
In conjunction with steady increases in production levels, longwall operators have applied greater quantities of ventilating air and spray water in an effort to control respirable dust and/or methane. Air velocities greater than 7.6 m/s (1500 fpm) have been measured on longwall faces. Operators have expressed concern over the potential entrainment of respirable dust at these high velocities. The greatest likelihood for entraining dust into the high velocity airstream may occur as shields are advanced allowing relatively dry particles to fall from the shield canopy directly into the airstream. Laboratory tests to simulate dust liberation during shield movement were conducted at the Pittsburgh Research Laboratory of NIOSH at velocities ranging from 2.0 to 8.2 m/s (400 to 1600 fpm). Airborne dust samples were obtained with personal impactors to quantify the size distribution and concentration of the dust entrained at the various air velocities. Statistically significant increases in both total and respirable dust concentrations were measured as test air velocities were increased.
Keywords
Dust-analysis; Dust-exposure; Dust-inhalation; Dust-particles; Dust-samplers; Dust-sampling; Dusts; Statistical-analysis; Longwall-mining; Mine-workers; Miners; Mining-industry
Publication Date
20010201
Document Type
Conference/Symposia Proceedings
Fiscal Year
2001
NTIS Accession No.
NTIS Price
NIOSH Division
PRL
Source Name
2001 SME Annual Meeting, February 26-28, 2001, Denver, Colorado, Preprint 01-144
State
PA; CO
TOP