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Assessment of whole body vibration levels of coal miners. Volume III: low frequency vibration exposure and seat performance.

Authors
Remington-PJ
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, OFR 1C-87, 1984 Jan; :1-67
Link
NIOSHTIC No.
10005576
Abstract
The field data gathered as part of the measurements described in Volumes I and II were reanalyzed in the low frequency regime (.1 Hz to 1 Hz) where motion sickness normally occurs. These data were compared to the International Standard 2631 Addendum 2: Evaluation of exposure to whole body z-axis vertical vibration in the frequency range of 0.1 to 1.0 Hz. For both underground mining machines and surface mining machines, the results showed that one would not expect motion sickness to be a severe problem. New field data were gathered on the vibration reduction performance of various seat designs found on surface coal mining machines. The vibration during normal operation was simultaneously measured on the seat using the standard seat pad accelerometer packaged described in the previous two volumes, and on the floor of the machine at the base of the seat. Preliminary indications are that the so-called high performance seats used for operator vibration reduction do not offer significant improvement over conventional seats.
Keywords
Mining research; Vibration; Motion sickness; Surface mining; Excavating equipment; Coal mining; Whole body vibration; Vibration exposure; Seat design
Publication Date
19840101
Document Type
CP; Final Contract Report; Conference/Symposia Proceedings
Fiscal Year
1984
NTIS Accession No.
PB87-144127
NTIS Price
A04
Identifying No.
OFR 1C-87; Contract-J0308045
NIOSH Division
PRC
Source Name
Assessment of whole body vibration levels of coal miners. Volume III: low frequency vibration exposure and seat performance.
State
PA; MA
Performing Organization
Bolt Beranek and Newman, Inc., Cambridge, MA
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