Gives a bonus amount of mined ore of all grades upon collection
What it costs to research each level, how long it takes, and the effect at that level.
| LEVEL | TIME | HARD CURRENCY | COST | EFFECT |
|---|---|---|---|---|
| Lv 1 | — | 0 | — | 0.05% |
| Lv 2 | — | 0 | — | 0.08% |
| Lv 3 | — | 0 | — | 0.12% |
| Lv 4 | — | 0 | — | 0.16% |
| Lv 5 | — | 0 | — | 0.2% |