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If It’s Silica… It’s Not Just Dust!

DISCLAIMER: The resources provided on this website contain useful technical information. However, since this website was developed, the Occupational Health Safety and Health Administration (OSHA) established a new Permissible Exposure Level (PEL) of 50 micrograms of respirable crystalline silica per cubic meter of air (μg/m³), averaged over an 8-hour workday, and there are now additional requirements under .

Silicosis Fact Sheets

• Dry Cutting and Grinding is Risky Business:
     English [pdf 142kb], español [pdf 139kb]
• Stop Silicosis in Sandblasters – Use Silica Substitutes

Silica Dust Levels

• Silica Dust-Producing Tasks
• Controlling Silica Dust

Respirators

Respirators should not be the primary method of protection. If engineering controls cannot keep dust levels below the OSHA PEL (50μg/m³), then respirators should be used. Always use NIOSH-approved respirators.

• What Type of Respirator Should I Use When Working with Silica?
• (From the University of Washington)

• From OSHA:

Engineering Controls

Personal Protective Equipment (PPE)

Alerts

• NJDOH Health Alert: Stone Countertop Fabrication Workers At Risk For An Incurable Lung Disease [pdf 360k]
•  
  [Note: This alert contains useful technical information. However, the Permissible Exposure Level for silica dust has been lowered since this publication was released and there are now additional requirements under the new OSHA silica standard]
•  

 Workers

Other Resources

• Best Practices for Dust Control in Metal/Nonmetal Mining:
  Quick Overview [pdf 55k] > Full Document [pdf 3m]
• Dust Control Handbook for Industrial Minerals Mining and Processing:
  Quick Overview [pdf 99k] Full Document [pdf 14m]

• Silica Dust-Producing Tasks
• What Dental Technicians Need To Know About Silicosis [pdf 114k]
• Silicosis and Silica Exposure in Dental Technicians (slide show) [pdf 104mb]

Additional Resources