U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES
Public Health Service
Centers for Disease Control and Prevention
National Institute for Occupational Safety and Health
Division of Safety Research
September 1997
DISCLAIMER
Mention of any company or product does not constitute endorsement by the National
Institute for Occupational Safety and Health
This document is in the public domain and may by freely copied or reprinted.
Copies of this and other NIOSH documents are available from
Publications Dissemination, EID
National Institute for Occupational Safety and Health
4676 Columbia Parkway
Cincinnati, OH 45226-1998
Fax number: (513) 533-8573
Telephone number: 1-800-35-NIOSH (1-800-356-4674)
E-mail: pubstaft@cdc.gov
To receive other information about occupational safety and health
problems, call 1-800-35-NIOSH (1-800-356-4674), or visit the NIOSH Home Page
on the World Wide Web at http://www.cdc.gov/niosh/homepage.html
DHHS (NIOSH) PUBLICATION No. 97-163
View or print the complete document using Adobe Acrobat Reader.
NIOSH home page |
CDC home page 