| Section No. | Description |
|---|---|
| Section 22.0 | Purpose |
| Section 22.1 | Definitions |
| Section 22.2 | Application procedures and requirements |
| Section 22.4 | Conditions governing investigations |
| Section 22.5 | General requirements |
| Section 22.6 | Specific requirements |
| Section 22.7 | Material required for MSHA records |
| Section 22.8 | How approvals are granted |
| Section 22.9 | Approval plate |
| Section 22.10 | Instructions on handling future changes in design |
| Section 22.11 | Purpose |