# Federal Register
1 - 1910.134(d)(1)(i) - 82:2470-2757 - Occupational Exposure to Beryllium - PDF
# Regulations
1 - - Respiratory protection.
# Standard Interpretations
1 - 1910.134(d)(1)(i) - Beards may not interfere with face seal;alternative respirators for bearded employees.
2 - 1910.134(d)(1)(i) - Selection of air purifying respirators for gases and vapors with poor warning properties (diisocyanates)