accepted materials

 Bare Bright Copper
 #1 and #2 Copper
 Aluminum
​ Steel
 Bare and Insulated Wire
 Radiators and other car parts
 ​Lawn mowers and weed eaters
 Aluminum Cans
 Household appliances
 Lead
 Alloys
 Iron and Rebar
 A/C units
 Car Wheels (no tires)
​ Whole vehicles (with title)

AND SO MUCH MORE!