| # | Directives |
|---|---|
| 1 | - 1926.550 - National - CPL 02-01-056 [CPL 2-1.36] - Inspection Procedures for Accessing Communication Towers - PDF |
| 2 | - 1926.550 - National - STD 03-12-004 [STD 3-12.4] - Interpretation of "Normal Operating Conditions" for Overhead and Gantry Cranes, and Derricks |
| 3 | - 1926.550 - National - STD 03-12-001 [STD 3-12.1A] - 29 CFR 1926.550(a)(15)(i) Clearance Between Electrical Power Lines and Cranes |