An old coworker had a daughter who was taking gymnastics, the gym had gotten a bunch of new equipment and was just throwing out the old stuff. My coworker called me and told me to get up there now, the old equipment had steel tubing bases that were filled with this shot and they were being dropped in a dumpster. I got up there and loaded up as much as my little truck could handle, sure beat the hell out of scrounging for wheelweights! I'm just about out of the nice clean graphited stuff, I do still have a bunch of shot left but it came out of some bases that must have sat in water for some times and it's all oxidized and is covered in rust from the tubing. I tried to clean it up as much as I could and re-graphite it but it didn't turn out as good as I hoped, I might offer some of that stuff up for sale later at a discount.