Powered by GoogleTranslate

This website is currently not being updated due to the suspension of federal government services.
The last update to the site was January 22, 2018. Updates to the site will start again when the federal government resumes operations.
If you need to report a workplace fatality or emergency, call OSHA at 1-800-321-OSHA (6742), TTY 1-877-889-5627.

Evaluation of Fibers as to their Carcinogenicity


Evidence for carcinogenicity

Overall evaluation of carcinogenicity to humans
Human Animal
Glasswool I L 3
Glass filaments I I 3
Rockwool I L 3
Slagwool I (no info given) L 3
Refractory ceramic fibers I S 2B
Special-purpose glass fibers I (no info given) S 2B
  • S = Sufficient Evidence
  • L = Limited Evidence
  • I = Inadequate Evidence
  • Group 2B = Possible Carcinogenic to Humans
  • Group 3 = Cannot be evaluated as to its Carcinogenicity to Humans

*This table is extracted from Section 5.5 of "Man-made Vitreous Fibres." International Agency for Research on Cancer (IARC) 81(2002).

Back to Top

Thank You for Visiting Our Website

You are exiting the Department of Labor's Web server.

The Department of Labor does not endorse, takes no responsibility for, and exercises no control over the linked organization or its views, or contents, nor does it vouch for the accuracy or accessibility of the information contained on the destination server. The Department of Labor also cannot authorize the use of copyrighted materials contained in linked Web sites. Users must request such authorization from the sponsor of the linked Web site. Thank you for visiting our site. Please click the button below to continue.