Must clean and dispose of waste materials, debris, residue from, on top of, under and out of different locations throughout the plant. (i.e. limehouses, roofs, venturi scrubbing systems, basements, silos, bins, storage areas, kilns, mills, screen and screen areas, grates, under conveyor belts, between rollers, crushers, catwalks, tail pulley, trucks, rail cars, tankers, truck paths, rail tracks, driveways, and all yard areas including the quarries and maintenance areas.