| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Block hole | Mining | A. A small hole drilled into a rock or boulder into which an anchor bolt or a small charge or explosive may be placed b. Used by drillers, miners, and quarry workers for a method of breaking undesirably large blocks of stone or boulders by the discharge of an explosive loaded into shallow holes drilled into the blocks or boulders c. A relief hole designed to remove part of the burden from a subsequent shot; used in coal mining. (references) | |
| Block hole shot | Mining | See: pop shot. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
