| Company | Reserves, mln t | Production/yr, mln t | R/P, yrs |
|---|---|---|---|
| Alcoa Corporation | 555.30 | 28.10 | 19.8 |
| RusalRU | — | 3.92 | — |
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).