209 / | HD | CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS |
132 | DF | FLUID SUSPENSION {2} |
155 | DF | .~ Liquid {5} |
162 | DF | .~.~ Floating {3} |
172 | DF | .~.~.~ Gravity liquid {3} |
174 | DF | .~.~.~.~ Metallic (i.e., amalgamators) {6} |
192 | DF | .~.~.~.~.~ Feeding and discharging {1} |
193 | .~.~.~.~.~.~ Bath |