| from the surface | 5 | location |
| economically | 3 | manner |
| downwards in opencast mining | 3 | other |
| mineral → be → recovered | 15 |
| mineral → be → recoverable | 3 |
| negative | neutral | positive |
| 0.084 | 0.726 | 0.190 |
| Raw frequency | 18 |
| Normalized frequency | 0.324 |
| Modifier score | 0.900 |
| Perplexity | 195.001 |