- stull timbering
- Горное дело: крепление распорной крепью
Универсальный англо-русский словарь. Академик.ру. 2011.
Универсальный англо-русский словарь. Академик.ру. 2011.
Stull stoping — is an underground hardrock mining method that uses systematic or random timbering ( stulls ) placed between the foot and hanging wall of the vein. This method require that the hanging wall and often the footwall be of competent rock as the stulls … Wikipedia