| Company | Reserves, mln t | Production/yr, mln t | R/P, yrs |
|---|---|---|---|
| Bukit AsamID | 2 980 | 43.30 | 68.8 |
| Peabody Energy | 2 000 | 125 | 16.0 |
| Arch Resources | 849.50 | 44.43 | 19.1 |
| Alliance Resource Partners | 586.50 | 24.90 | 23.6 |
| CONSOL Energy | 350.20 | 48.90 | 7.2 |
| Hallador Energy | 34.50 | 12.38 | 2.8 |
| Alamtri Resources IndonesiaID | — | 65.80 | — |
All figures are in millions of the metric unit; within a commodity the unit is consistent (oil & gas harmonised to mln boe, gas converted at 6 mcf ≈ 1 boe). Source — issuers' Production & Reserves disclosures (SEC / IFRS / KASE).