The ACGIH, NIOSH and OSHA standard for
occupational exposure to noise specifies a max-
imum exposure limit of 90, 85 and 85 dB(A),
respectively, for a duration of 8 h/day. Prescribed
Turkish standard of noise exposure limit for 8 h
is 87 dB(A). As seen Table
3
, especially crusher
workers are exposed to high noise levels both
Turkish and international standards.