CEMA Belt Book First Printing - Corrected Pages as found
Feeder belts, flat or troughed, for 50 to 100 Any Width feeding fine , nonabrasive, or mildly abrasive materials from hoppers and bins Coal (bituminous, sub-bituminous), 500 to 700 Any Width PRB coal, lignite, petroleum coke, gob, for belt conveyors culm and silt 380 to 500 for silo feed conveyors and tripper belt conveyors.