| 209 / | HD | CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS |
| 233 | DF | SIFTING {16} |
| * | DD | .~ Plane sifters {2} |
| * | DD | .~.~ Horizontal and inclined {4} |
| * | DD | .~.~.~ Reciprocating {6} |
| * | DD | .~.~.~.~ With horizontal shake {3} |
| 333 | DF | .~.~.~.~.~ Lateral {4} |
| 337 | | .~.~.~.~.~.~ Sliding {1} |
| 338 | DF | .~.~.~.~.~.~.~> With impact |