| keldagrim | 0.40 |
| produce industrial meta… | 0.63 |
| produce pig iron | 0.40 |
| produce iron | 0.40 |
| be a members-only minig… | 0.36 |
| lined with fireproof br… | 0.33 |
| ore move through the to… | 0.25 |
| use a blast furnace | 0.25 |
| create air pollution | 0.16 |
| an input of heat | 0.25 |
| open | 0.25 |
| a shaft furnace | 0.25 |
| fed with coke | 0.66 |
| fed with the iron ore | 0.65 |
| lined with refractory b… | 0.58 |
| fed with small quantiti… | 0.55 |
| charged with iron ore | 0.53 |
| charged with coke | 0.52 |
| charged with charcoal | 0.47 |
| built | 0.47 |
| filled with limestone | 0.45 |
| started | 0.40 |
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