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The Reduction of airborne dust generated by roof bolt drill bits through the use of water
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Description:"The study, shows that the large volumes of water conventionally used in wet drilling are not necessary, and the performance benefits from wet drilling can be achieved with total volume flows on the order of 0.4 L per hole. This conclusion is validated based on the measured respirable dust generated in drilling Berea sandstone. The results are confirmed using a variety of bit shapes, which are also shown to have a significant effect on penetration rate." - NIOSHTIC-2
NIOSHTIC no. 10005512
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