mining tunnel
C47996
concept
A mining tunnel is a man-made underground passage excavated through rock or earth to access and transport mineral resources from a mine.
Observed surface forms (4)
| Surface form | Occurrences |
|---|---|
| mine shaft | 1 |
| mine shaft structure | 1 |
| underground mine workings | 1 |
| underground stone mines | 1 |
Instances (5)
| Instance | Via concept surface |
|---|---|
| Sutro Tunnel | — |
| Combe Down quarries | underground stone mines |
| Empire Mine shaft system | underground mine workings |
| Quincy No. 2 Shaft-Rockhouse | mine shaft structure |
| Quincy No. 4 Shaft | mine shaft |