| # | Letters of Interpretation |
|---|---|
| 1 | - 1910.134(g)(4) - Classification of fires; respiratory protection to extinguish fires. |
| 2 | - 1910.134(g)(4) - Complying with the "two-in, two-out" policy for interior structural firefighting. |
| 3 | - 1910.134(g)(4) - Respiratory protecton standard two-in/two-out policy. |
| 4 | - 1910.134(g)(4) - Two-in/two-out rule for interior structural fire fighting. |
| 5 | - 1910.134(g)(4) - Two-in/two-out procedure in firefighting/IDLH environments. |
| 6 | - 1910.134(g)(4) - The interpretation of the OSHA standards 1910.134 and 1910.156 which address the requirements for workers who are actively conducting operations in atmospheres that are immediately dangerous to life and health. |
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