Noise control of diesel-powered underground mining machines, 1979.
Daniel JH; Burks JA; Bartholomae RC; Madden R; Ungar EE
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 8837, 1981 Jan; :1-29
This Bureau of Mines report presents results of a survey of underground mining equipment and of two demonstration programs showing the feasibility of quieting a load-haul-dump (lhd) machine and a personnel vehicle. Typical noise levels are presented for the major machine types used in underground mines, along with estimates of the noise overexposure of miners who operate or work near these machines. General principles of noise control are explained, and the application of these principles is illustrated in the description of modifications made to the lhd machine and the personnel vehicle. The noise control package installed on the personnel vehicle lowered its noise level by 14 dba after 4 months of operation, and inspection of the lhd machine after 2 1/2 years of operation with the modifications showed its noise level 7 dba lower than that of the unmodified machine. Noise dosimeter measurements indicated that both machines were in compliance with federal noise regulations for a typical shift.
Underground mining; Mining equipment; Noise reduction; Materials handling equipment; Noise pollution; Acoustic absorption; Human factors engineering; Physiological effects; Noise levels
IH; Information Circular
NTIS Accession No.
Noise control of diesel-powered underground mining machines, 1979