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| # | Letters of Interpretation |
|---|---|
| 1 | - 1910.134(d)(2)(iii) - Applicability of OSHA's definition of oxygen-deficient atmosphere to Air Force facilities |
| 2 | - 1910.134(d)(2)(iii) - Clarification of OSHA denial of FirePASS's variance request and respiratory protection requirements in oxygen-deficient atmospheres. |
| 3 | - 1910.134(d)(2)(iii) - Clarification of OSHA's requirement for breathing air to have at least 19.5 percent oxygen content. |
| # | Regulations |
|---|---|
| 1 | Respiratory protection. |
