299 / | HD | MINING OR IN SITU DISINTEGRATION OF HARD MATERIAL |
29 | DF | HARD MATERIAL DISINTEGRATING MACHINES {17} |
34.01 | DF | .~ Cutter attached to endless chain or cable (e.g., planer type) {8} |
34.04 | .~.~ Planer, plow, or knife details {2} | |
34.05 | DF | .~.~.~> With fluid supply |
34.06 | DF | .~.~.~> With vibrator |