| 241 / | HD | SOLID MATERIAL COMMINUTION OR DISINTEGRATION |
| * | DD | APPARATUS {41} |
| 198.1 | DF | .~ Cooperating comminuting surfaces (e.g., jaw crusher) {5} |
| 220 | DF | .~.~ Rotary surface (or surfaces) {2} |
| 244 | DF | .~.~.~ Axial or radial flow of material (e.g., disc mill, or cone and shell mill) {6} |
| 260 | DF | .~.~.~.~ Cooperating non-smooth surface characteristics {4} |
| 261.2 | | .~.~.~.~.~ Opposed, flat coaxial surfaces (e.g., disk mill) {1} |
| 261.3 | DF | .~.~.~.~.~.~> Having plural angularly related land and groove |