# Federal Register
1 - 89:45025-45026 - Vinyl Chloride Standard; Extension of the Office of Management and Budget's (OMB) Approval of Information Collection (Paperwork) Requirements - PDF
# Regulations
1 - 1910.134(d)(3)(iii)(B)(1) - Respiratory protection.
# Standard Interpretations
1 - 1910.134(d)(3)(iii)(B)(1) - Use of Chemical Cartridge Respirators for Protection Against Mercury Vapor