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| # | Regulations |
|---|---|
| 1 | - - Respiratory protection. |
| # | Letters of Interpretation |
|---|---|
| 1 | - 1910.134(d)(3)(iii) - Selection of air purifying respirators for gases and vapors with poor warning properties (diisocyanates) |
| 2 | - 1910.134(d)(3)(iii)(B)(1) - Use of Chemical Cartridge Respirators for Protection Against Mercury Vapor |
