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Occupational Health Branch

Silica Safety Resources for Stone Fabricators


Working Safely with Natural & Engineered Stone Products - a webinar for stone countertop fabrication employers and safety professionals - was presented on May 14, 2019, by the National Institute for Occupational Safety and Health (NIOSH), OSHA, Cal/OSHA, OHB, and the Natural Stone Institute.

Health Advisory: Crystalline Silica Dust

Crystalline silica is in quartz, granite, artificial/engineered stone, and other stone products. When very small particles of silica dust get in the air, they can be breathed into the lungs and cause permanent scarring and trouble breathing. Silica dust can also cause lung cancer, kidney damage, and autoimmune disease.

The following resources provide information on silica exposure prevention:

If your company needs help measuring silica exposure or complying with the Cal/OSHA silica standards:

  • Contact your workers' compensation insurance company.
  • Call Cal/OSHA Consultation at (800) 963-9424 for a free, confidential visit.
  • Find an industrial hygienist through a searchable list of consultants provided by the American Industrial Hygiene Association.

Additional Resources

Health Advisory on Stone Fabrication Hazards (PDF) - CDPH OHB advisory on severe lung disease from inhaling silica dust

Silica – Notes from the Field: Silicosis in a Countertop Fabricator – Texas, 2014 – MMWR report

Toxic Dusts – Silica (PDF) | Spanish - BuildSafe tailgate training safety cards

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