Respirators for silica dust must be selected based on exposure levels.
OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.
May 12, 1999
Mr. David Koch
Senior Technical Service Specialist
DALLOZ SAFETY
P.O. Box 622
Reading, PA 19603-0622
Dear. Mr. Koch:
This letter is in response to your March 24, request for clarification of the Occupational Safety and Health Administration's (OSHA's) respiratory protection requirement for employees exposed to crystalline silica. Thank you for your inquiry.
