> "Tin" cans aren't really made out
> of tin anymore, or are they?  The tuna cans look like steel to me.

Steel and aluminum, I think; although tin might be a component of the
solder.  Levels are higher in low acid foods (such as tomato products)
stored for an extended length of time.

> Anybody have a clue where I
> could be getting so much tin from?

www.acu-cell.com/tin.html
dietary tin

> Are there other sources of mercury that
> could be in my diet?

dental amalgams

> Also, any ideas about how to purge/eliminate the
> excesses?

www.detoxamin.com/
at-home EDTA chelation

Rob