| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Hand spraying | Mining | A method of dust prevention used in hand-won faces, or in conjunction with wet cutting in thick seams. The sprays are controlled by the colliers who wet the face and the broken coal before loading. Sprays must be connected with the pipeline through the face by means of flexible hoses; one spray for every 20 yd (18.3 m) of face is usually sufficient. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
