Operational highlights
| (kt) | 1Q 2020 | 4Q 2019 | ∆ kt | ∆ % | 1Q 2020 | 1Q 2019 | ∆ kt | ∆ % |
| Crude steel | 2,170 | 1,673 | 497 | 30% | 2,170 | 1,941 | 229 | 12% |
| Iron ore concentrate (total) | 7,606 | 7,278 | 328 | 5% | 7,606 | 7,204 | 402 | 6% |
| Coal concentrate (total) | 842 | 779 | 63 | 8% | 842 | 674 | 168 | 25% |