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; :66-73
The interior noise of an underground mine rail-operated personnel carrier (mantrip vehicle) was cost effectively reduced by replacing some standard components with acoustically treated components. The noise control features included a softer suspension, softer motor mounts, damped panels, sound-absorbing motor enclosures, and helical gears. Depending on operating conditions, the modified vehicle was 6 to 7.5 dBA quieter than an unquieted mantrip. The noise level in the mantrip interior was reduced to approximately 85 dBA at an average vehicle speed. These noise control features increased the overall mantrip cost by less than 5 pct.
Mining; Mining industry; Mining equipment; Noise control; Noise; Engineering controls; Control technology; Coal mining; Coal mines; Underground mines; Underground mining
IH; Conference/Symposia Proceedings
Noise Control: Proceedings: Bureau of Mines Technology Transfer Seminars, Pittsburgh, PA, July 24, 1984, and Denver, CO, July 26, 1984