| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Egg coal | Mining | A. A particular size of anthracite coal that passes through 3-1/4-in to 3-in (8.26-cm to 7.62-cm) round holes and over 2-1/16-in (5.24-cm) round holes. See also: anthracite coal sizes b. A particular size of bituminous coal that passes through 4-in (10.2-cm) round holes and over 1-1/2-in (3.81-cm) round holes (sizes are not uniform but vary with the coalfield). (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
