When I first started I would pass up steel, not worth it I would say, but things change...
So far here are my %'s over 8 years!
Steel 79% of weight and 39% of cash
Aluminum 9% of weight 28% of cash
Copper 8% of weight 22% of cash
Brass, lead, stainless and zinc 3% of weight, 8% of cash
Glass, Plastic and Cardboard 1% weight and 2% cash
E waste >1% waste and 2% cash
Bookmarks