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A circular plate conveyor to effect a preliminary grading of coals and
removal of stone by hand. A screened-out fraction of the run-of-mine coal
is delivered to the table by chute from a conveyor. As the stream of coal
revolves on the table, the various grades of coal and the dirt are raked
into positions where they are diverted by plows into chutes. The operators
are positioned on the inner and outer edges of the table and the coal is
not handled but only raked. Syn: circular grading table
Source:
Dictionary of Mining, Mineral, and Related Terms
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