mine shaft
underground vertical or inclined passageway in mining engineering
Mine Leonie
abandoned iron mine in Germany
slope mining
an almost inclined shaft with >45°-75° inclination
bell pit
early form of simple mine shaft, widened at the bottom and in cross-section shaled like a bell
blind shaft
connects 2 or more levels of a mine without reaching the surface
Pozo San Vicente
mine shaft in Spain
Schacht IV
mine shaft in Barsinghausen, Region Hannover, Germany
Warren's Shaft
archaeological site in Israel
Pozo Norte
Former shaft in Puertollano (Spain)
engine-shaft
mine shaft used for the purpose of pumping
Pozo de San Juan
Former mine shaft of Spain