| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Hoisting plug | Mining | A pin-thread heavy-bodied coupling provided with a swivel-mounted eye in the end opposite the pin-thread end. When attached to the hook on the drill-hoist line, the pin-thread end can be screwed into the rods to hoist and otherwise handle drill-string equipment when making borehole round trips. Also called swivel plug. See also: plug. (references) | |
| Swivel hoisting plug | Mining | See: hoisting plug. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
