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D Diisclascla iimermer
Mention of any company name or product does not constitute
endorsement by the National Institute for Occupational Safety and Health.
Copies of this and other NIOSH documents are available from
National Institute for Occupational Safety and Health
Publications Dissemination
4676 Columbia Parkway
Cincinnati, OH 45226-1998
1-800-35-NIOSH (1-800-356-4674)
Fax number: (513) 533-8573
To receive other information about
occupational safety and health problems, call
1-800-35-NIOSH (1-800-356-4674), or
visit the NIOSH Web site at:
www.cdc.gov/niosh
DHHS (NIOSH) Publication No. 99-143
iv
