Approximate composition on isotope lead

[argie1891]

I lived close to the Hanford reservation 30 years ago, and have been given a large amount of lead. one time I was given a 4x8 foot sheet about a quarter inch thick easy to work with as all it took was an axe. Many 25 lb. bricks and at one time I was getting all the containers from the local hospital. still have a lot of it left. anyway to add my 2 cents worth on the zinc issue I never had a bit of problems casting with any of it. Ok it will flow better with some added tin but then what alloy wont improve with some added tin. It would surprise me if you had any issues with the lead.

 

[Ian]

The problem with zinc is a recent one due to mass recycling of alloy for general uses.

 

[fiver]

it's always been a non issue of hype because someone wrote it in a book once.
I bought some zinc ingots not too long ago, because I don't have any ww's that are zinc for one, and I wanted some zinc in my alloy for another.