 |
| |||
| hammer drilling; percussive boring (drilling) | |||
| churn drilling; percussion drilling | |||
| |||
| churn-drill (mit dem Seilschlagbohrgerät); jar | |||
| schlagendes Bohren: 1 do fraz, 1 tematyki |
| Górnictwo | 1 |
|
| |||
| hammer drilling; percussive boring (drilling) | |||
| churn drilling; percussion drilling | |||
| |||
| churn-drill (mit dem Seilschlagbohrgerät); jar | |||
| schlagendes Bohren: 1 do fraz, 1 tematyki |
| Górnictwo | 1 |