| Archive Reference / Library Class No. | LS/622.4 Oversize |
| Title | Code of practice OI/30 |
| Date | 1992 |
| Publication Date | 1992 |
| Author | British Coal |
| Repository | Derbyshire Record Office |
| Sender Location | C21156271 |
| Further Information | Covers support of mine roadways by rockbolts, and rockbolting on salvage faces. |
| Term | COAL |
| Mining equipment |
| MINES |
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