MOST of the tire shops in this area have a deal with a recycler who picks them up on a regular basis. My nephew works for Wal Mart and asked about getting a couple buckets for me.His boss said they are LEAD,and a "controlled substance"! He said other casters have asked and got the same answer. SO IF the tire guy will part with some give him what he asks. I would check put the junk yard to see what they are getting first.