Jig concentrators - WikipediaJig concentrators are devices used mainly in the mining industry for mineral processing, . There are some minerals, notably coal, that are lighter (lower in density) than the surrounding rock and in such instances the process of extraction would.what is a coal mining jig,what is a coal mining jig,Coal preparation plant - WikipediaA coal preparation plant is a facility that washes coal of soil and rock, crushes it into graded . The coal delivered from the mine that reports to the coal preparation plant is called . Jigs. Jigs are a gravity separation method for coarse coal.
what is a coal mining jig