Well you aren't supposed to eat it
Once alloyed with lead it should never reach a temperature where it is a problem either.
It goes without saying that you should always work in a well ventilated area and don't put unwashed hands in your mouth, up your nose etc.
There is plenty of info regarding the health issues on't interweb, do a bit of research first.
This is a good one with a wealth of info http://castboolits.gunloads.com/
Never use battery plates. Breathing the fumes from them will result in you not having to worry about the price of anything!!!
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