By Kissell, Fred N.
Compiled by way of the U.S. Dept of healthiness and Human providers, CDC/NIOSH place of work of Mine security and well-being examine, this 2003 instruction manual describes potent tools for the keep an eye on of mineral dusts in mines and tunnels. It assumes the reader knows mining. the 1st bankruptcy offers completely with dirt keep an eye on equipment, whatever the program. it's a short instructional on mining airborne dirt and dust keep an eye on and may be of aid to the reader whose airborne dirt and dust keep watch over challenge doesn't very easily healthy any of the mining gear niches defined in later chapters. the following chapters describe airborne dirt and dust regulate tools for other kinds of mines and mining apparatus. This comprises underground coal and hard-rock mines, in addition to floor mines, stone mines, and hard-rock tunnels. simply because dirt sampling has such a lot of pitfalls, a bankruptcy on equipment used to pattern dirt is incorporated. For these events while there is not any functional engineering keep watch over, a bankruptcy on respirators can also be incorporated.
record of Illustrations
record of Tables
Unit of degree Abbreviations utilized in This record
desk of Contents
approximately This guide
1. dirt keep an eye on tools in Tunnels and Underground Mines
2. non-stop Miner and Roof Bolter airborne dirt and dust regulate
three. Longwall dirt regulate
four. airborne dirt and dust regulate in Stone Mines
five. floor Mine airborne dirt and dust regulate
6. Underground Hard-Rock airborne dirt and dust keep watch over
7. keep watch over of airborne dirt and dust in Hard-Rock Tunnels
eight. how to define the key airborne dirt and dust resources
nine. airborne dirt and dust Respirators in Mines and Tunnels
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Extra info for Handbook for Dust Control in Mining
31 The concentration measured at H will contain a small amount of shearer dust from the cutout at the headgate. This error can be eliminated by turning off the sampling pump when the shearer is upwind of shield 10. 32 This assumes that shield movement is far enough from the shearer to be subtracted out. 33 The 25-ft value is approximate and may vary slightly depending on circumstances. If the downwind person gets too close to the shearer, the samplers will be biased upwards by shearer dust. If the downwind person gets too close to the moving shields, the samplers will be biased upwards because the shield dust, which falls mostly into the walk29 41 of shield movement.
Reducing dust from the stageloader-crusher. The stageloader-crusher can be a major dust source on longwall faces. To reduce this dust, the stageloader-crusher is enclosed with steel plates and strips of conveyor belting. All seals and skirts must be carefully maintained to ensure that dust stays inside the stageloader-crusher enclosure. Several sprays are mounted on internal spray bars, which usually span the width of the conveyor. Recommended spray bar locations are the mouth of the crusher, the discharge of the crusher, and at the stageloader-to-belt transfer point.
S. Department of the Interior, Bureau of Mines. —LONGWALL DUST CONTROL By Fred N. ,25 Jay F. Colinet,26 and John A. Organiscak27 In This Chapter Which dust source to address first How much air and water are needed Keeping dust out of the walkway Moving workers upwind Dealing with the stageloader-crusher Gob and wing curtains to aid airflow The shearer-clearer system Modified support movement practices and Dust control for future longwalls Controlling longwall dust is not easy. Longwall production levels are high, and there are several different sources of dust to contend with.