Raised garden beds made of old sheets of tin, potential to contaminate food with heavy metals?

We have a large vegie garden with heaps of raised beds. They are constructed with sheets of old rusty sheets of tin. I guess they would be 3 feet wide, with at least 2 feet of tin below the ground and the remaining area filled with soil. Would growing root vegetables and tomato's etc in these garden beds be likely to produce fruit and vege contaminated with heavy metals?

Raised garden beds made of old sheets of tin, potential to contaminate food with heavy metals?
Unless the tin is soldered with lead, there shouldn't be an issue. I'm not sure how durable the tin will be, but that's a different issue.
Reply:No.
Reply:The problem would probably be the tin breaking down and your sides falling away. Good luck!
Reply:why would it?





i'm sure most places in the country there's food growing in soil that has alot worse than a little iron oxide in it don't you?





and people buy it and eat it everyday.





if you're that worried about it, take some medium coarse steel wool and knock down the heaviest rust and then maybe line the bottom with landscaping fabric to reduce the actual soil contact with the rust.
Reply:Not sure, I think that some corrugated sheets are lined with zinc, which I don't think is a problem. How do you know what it is made of? It might be something harmless...





http://www.mercurypoisoningfree.com/page...





Check out the link, and also I think you should find out if it inhibits the plants taking up other trace minerals. While some things are not toxic, they can displace other trace elements.





There are professionals who would probably advise you over the phone, it might be worth checking with them.





Good luck.