U.S. Surface Coal Mine Mobile Equipment: Operator Noise Exposures and Noise Controls.
Am Conf of Gov Ind Hyg Cincinnati Ohio, 1986 14:575-590
The reduction of the noise exposure of operators of mobile surface mine equipment has been a primary objective of the Bureau of Mines. Approximately 25,000 mobile equipment operators in U.S. surface mines (45% of the operators) are overexposed to noise. These mobile machines include bulldozers, front-end loaders, haulers, shovels, draglines, trucks, scrapes, drills, and motor graders. Bulldozers and front-end loaders cause about two-thirds of the noise overexposures. The most cost-effective operator noise exposure control was determined to be acoustical cabs.
Am. Conf. of Gov. Ind. Hyg., Cincinnati, OH, V. 14, 1986, PP. 575- 590