Industry on Parade Compilation #30. Educational film about the industries that salvage, reuse and recycle materials. Man vacuuming floor and other surfaces at Schaefer Pen plant, Fort Madison, Iowa, to reclaim particles of gold from pen-making process; employees shown bringing work clothes for washing; shots of "sludge room" below plant, man sifting vat of sludge; man shovels dried sludge into garbage can; bagging gold residue for sale. Barge on Susquehanna River in Lancaster County, Pennsylvania, dredging coal-containing silt from river bottom; industrial shovel takes gathered silt from barge; exterior shot of cleaning plant for coal silt; large machines in for removing impurities at work; man takes sample of coal from cleaning machine and examines; reclaimed coal poured into railroad cars for transport.