Can dangerous material be made with a rock tumbler?

rock tumblerMy son is taking chemistry in school and he tells me he’s grinding¬†rocks but I’ve yet to see any rocks. Does this possess a danger?

This should be a harmless activity in that all that is happening is an automatic way to grind down minerals that often result in polished and sometime quite beautiful stones. ¬†Be clear that some tumblers are “on” for weeks in order to polish the stones so electricity costs are a mild consideration.

 

David Harpp

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