| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Face timbering | Mining | The placing of safety posts at the working face to support the roof of the mine. The safety post is the most important timber in a mine because exposure is greater at this point than at any other since the newly exposed top is always of unknown quality. See also: timbering. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
