Quieted percussion drills.
Noise Control: Proceedings: Bureau of Mines Technology Transfer Seminars, Pittsburgh, PA, July 24, 1984, and Denver, CO, July 26, 1984. Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 8986, 1984 Jul; :74-89
Percussion-type rock drills are commonly used in both coal and metal-nonmetal mines; they produce extremely high noise levels (110 to 120 dBA) and have complex noise-generating mechanisms. Therefore, engineering noise controls for percussion drills have been very difficult to achieve. However, substantial progress has been made toward this goal through the use of retrofit techniques and percussion drill redesign. This paper provides an overview of Bureau-sponsored research programs aimed at reducing the noise produced by percussion drills.
Mining; Mining industry; Mining equipment; Underground mines; Underground mining; Coal mines; Coal mining; Metal mining; Nonmetal mining; Noise; Noise exposure; Noise control; Control technology; Engineering controls; Pneumatic equipment; Pneumatic tools; Drillers; Drilling
IH; Conference/Symposia Proceedings
Noise Control: Proceedings: Bureau of Mines Technology Transfer Seminars, Pittsburgh, PA, July 24, 1984, and Denver, CO, July 26, 1984