Steel mills will purchase other forms of scrap, but they are considered a different grade and will bring a different price. Some steel markets may accept aerosol cans, paint cans, or glass jar lids. It is important to check with your end market before collecting these items, as their markets are more limited than those for steel food and beverage containers. Aluminum Aluminum made from contaminated cans must be supplemented with larger quantities of virgin aluminum than usual to meet can makers specifications. Metals such as iron, steel, copper, lead, and brass degrade the quality of recovered aluminum used in new can sheet, ultimately reducing the workability of aluminum sheet in can makers plants.
Moisture can slow down processing equipment or cause explosions.
Plastic may ignite during processing. ONP has two major sub-grades. No. 8 is sorted newspapers only. This is material typically generated from curbside collection. Waxed cardboard, chipboard and foreign corrugated may be contaminants.