The main contaminant in silver is copper. 
Ken

At 10:28 PM 6/20/02 -0700, you wrote:
>Marshall writes:
>>Lets take the most toxic metal that could be in there (Canadian Maple
>Leaf dollar), arsenic...
>
>I notice many people with tongue studs and wonder what percentage silver
>they are made of and what contaniments might lie within.  Would arsenic
>be a definite?  Anything else?
>Thanks,
>jr
>
>
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