| # | Letters of Interpretation |
|---|---|
| 1 | - 1926.103 - Emergency medical services on construction sites |
| 2 | - 1926.103 - Respirator requirements for employees wearing facial hair for religious reasons. |
| 3 | - 1926.103 - Application of 1926.800 to lone employees working underground in a tunnel or shaft connected to a tunnel. |
| 4 | - 1926.103 - Storage of flammable and/or combustible liquids. |
| 5 | - 1926.103 - Use of respirators for work in manholes. |