Jigging
Jigging , noun
(Mining) The act or using a jig; the act of separating ore with a jigger, or wire-bottomed sieve, which is moved up and down in water.
Collocations (1)
Jigging machine (Mining) , A machine for separating ore by the process of jigging A machine with a rotary milling cutter and a template by which the action of the cutter is guided or limited; -- used for forming the profile of an irregularly shaped piece; a profiling machine.