A pit prop is the timber that holds up the roof of a mine. Set a pit prop.
Wood was preferred to steel because it creaks loudly before it fails. A pit prop gave a warning nobody wanted to hear and everybody listened for.
1nounpit propThe timber that holds up the roof of a mine.
“Every pit prop was cut on the surface and carried down.”
pit prop is a support.
Practised in Rocks & Minerals