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Especially photos for the section on gravity separator and such
Consider combining the "dense media process" with the "dense media cyclone" Thatnode (talk) 11:49, 13 August 2011 (UTC)
This article flowed straight from coarse coal to froth, with no mention of how to wash -2mm+0.025mm material. Consider amending to insert sections detailing spirals, teetered bed separators and reflux classifiers. Thatnode (talk) 11:56, 13 August 2011 (UTC)