| 299 / | HD | MINING OR IN SITU DISINTEGRATION OF HARD MATERIAL |
| 29 | DF | HARD MATERIAL DISINTEGRATING MACHINES {17} |
| 36.1 | DF | .~ Floor-working {3} |
| 39.1 | DF | .~.~ Rotary cutter {6} |
| 39.4 | | .~.~.~ Drum-type {4} |
| 39.5 | DF | .~.~.~.~> Shiftable horizontally |
| 39.6 | DF | .~.~.~.~> Height adjustment |
| 39.7 | DF | .~.~.~.~> Yieldably mounted cutter |
| 39.8 | DF | .~.~.~.~> Specific mount for fixed projecting cutters |