the headgear of a mine operates the mine cage
Because of the pressure of the headgear
the headgear of a mine operates the mine cage
Cliffs Shaft Mine Museum was created in 1880.
A horizontal mine shaft is called an adit. en.wikipedia.org/wiki/Adit
it is in the mine thing
The mine shaft was over 500 feet deep. The shaft of the wagon was broken.
If you drop a grand piano down a mine shaft you would get a flat minor.
a thing
90m
a shaft mine
Strip mine Open-pit mine Shaft mine