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One other area of concern is the flashing on the conveyors. The flashing helps contain the material flow on the belt and prevents material spillage. "Flashing which is worn or adjusted too high creates a gap which allows material to escape from the belt, requiring more cleanup behind the milling machine as well as increasing material buildup, requiring further cleaning at the end of day," Schmidt says.

"Flashing which is adjusted too low, causes it to rub on the belt which can result in damage to the belt surface and, in extreme cases, even bond the flashing permanently to the belt."

The best way to monitor wear and tear on conveyors is to do visual inspections, Hood says. Chastain says to also make sure the belts are tight and cleaned on a daily basis. And make sure the belt is not angled. An angled belt will cause wear on the idlers, Hood adds.