| Extractive metallurgy (4) |  |
| Mineral dressing (5) | |
| Mineral engineering (3) | |
| Mineral extraction (5) | |
| Mineral processing (3) | |
| Extractive metallurgy (4) | |
| Mineral dressing (5) | |
| Mineral engineering (3) | |
| Mineral extraction (5) | |
| Mineral processing (3) | |
G#2v 8489 Mineral processing 0#3#mineral processing Mineral processing G#1v 8490 Gemstones G#2v 8491 Agate
0#3#agate Agate G#2v 8492 Alexandrite 0#3#alexandrite Alexandrite G#2v 8493 Amazonite
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