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Occupational Safety and Health Topics A to Z



All standards are on the OSHA Web site unless otherwise noted.

General Industry

Air Contaminants, 29 CFR 1910.1000General information

    Permissible Exposure Limits, 29 CFR 1910.1000, Table Z-3

Construction Industry


Gases, Vapors, Fumes, Dusts & Mists, 29 CFR 1926.55General information

     Permissible Exposure Limit, 29 CFR 1926.55, Appendix A

Operating Document

Health Hazards Special Emphasis Program, Exposure to Health Hazards Operational Procedure Notice 135

Crystalline Silica Compliance Directive, CPL 2-2.7


Silica Fact Sheet, NCDOL

Health Hazard Industry Alert, NCDOL

Silicosis Quick Card, NCDOL

OSHA Publications, OSHA Web site

Training Resources

Silica Videos, NCDOL Library (See “Chemical Safety” heading under video/DVD titles)

Other Agency Resources

Dusty Trades Program, N.C. Department of Health and Human Services, Public Health Division Web site

Silica Subject Index, OSHA Web site

Silica Subject Index U.S. Department of Heath and Human Services, Centers for Disease Control, National Institute for Occupational Safety and Health Web site

Agency for Toxic Substances and Disease Registry, U.S. Department of Health and Human Services Centers for Disease Control Web Site

Ask a Question

If you would like to receive interpretive guidance on this or any other OSH standard/subject, please e-mail or call 1-800-NCLABOR.



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