| Domain | Definition | ||
| Mining | A. S. Wales. A system of regulating the distance between the faces of stalls in longwall work. (references) | ||
Source: compiled by the editor from various references; see credits. | Top | ||
| Webster's Online Dictionary |
| Domain | Definition | ||
| Mining | A. S. Wales. A system of regulating the distance between the faces of stalls in longwall work. (references) | ||
Source: compiled by the editor from various references; see credits. | Top | ||
