| Domain | Definition | ||
| Mining | An opening through which the miners may leave the mine if the ordinary exit is obstructed. (references) | ||
Source: compiled by the editor from various references; see credits. | Top | ||
| Webster's Online Dictionary |
| Domain | Definition | ||
| Mining | An opening through which the miners may leave the mine if the ordinary exit is obstructed. (references) | ||
Source: compiled by the editor from various references; see credits. | Top | ||
