| 299 / | HD | MINING OR IN SITU DISINTEGRATION OF HARD MATERIAL |
| 10 | ![]() | PROCESSES {7} |
| 11 | DF | .~> Stabilizing underground structure |
| 12 | DF | .~> Mine safety |
| 13 | DF | .~> Explosive |
| 14 | DF | .~> Directly applying heat or vibration |
| 15 | DF | .~> Forming blocks (e.g., quarrying) |
| 16 | DF | .~> Breaking down by direct contact with fluid {1} |
| 18 | DF | .~> With material-handling |