Glossary of Terms
Properties of Various Materials
| Material |
Loose
Density (lb/ft 3 ) |
Angle of
Repose (degrees) |
| Ash | 35 - 40 | 40 |
| Coal, anthracite | 60 | 35 |
| Coal, bituminous, sized | 45 - 55 | 35 |
| Coal, lignite | 40 - 45 | 38 |
| Coke, loose | 23 - 35 | 30 - 44 |
| Coke, breeze | 25 - 34 | 30 - 45 |
| Coke, petroleum | 35 - 40 | . . . |
| Gravel, dry | 90 - 110 | 40 |
| Gypsum, screened | 70 - 80 | 30 - 40 |
| Iron ore | 145 | 35 |
| Limestone, crushed | 95 - 100 | 38 |
| Sand, dry | 90 - 100 | 35 |
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