stot de protection du point de soutirage

OBS: Proposition faite par analogie à ""stot de protection de la voie de base"".
OBS: Les stots de protection de la voie de base peuvent être abattus lors de l'abandon définitif de cette voie.

OBS: The rehabilitation of the haulageway has allowed for the mining of the boxhole pillars, which is the area from which the Number 3 Mine personnel has been mining their higher grade ore.
OBS: The accompanying diagram (from Methods of Working Coal and Metal Mines, 1966, vol. 3, p. 310) illustrates the use of boxhole pillars in shrinkage stoping.