| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Hand hammer | Mining | Any hammer wielded by hand. A blacksmith's (or miner's) hammer used with one hand as distinguished from a heavier hammer or sledge. (references) | |
| Hand hammer drill | Mining | An ordinary rock drill held in the hand and not mounted on a bar or column. The air leg support is now widely used in tunnels and rock drilling generally. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
