I was very fortunate, before I retired, they wanted to get rid of a big pile of lead radioisotope shipping containers. I could have all that I could carry out of the plant. For days, I carried out as many of the containers as I could. I stockpiled a few hundred pounds of the containers and melted them down and cast them into 1 pound ingots. I have three wooden boxes of them. I don't know how much each box weighs but when we moved, the movers had to use dollies to move them. Sure glad I got it while it was available......and FREE!!! I'll never use it all and will probably leave at least one, and likely more, of the boxes to my kids when I slip off this mortal coil.
Oh, by the way, it is not radioactive, I checked before I took it home.