As far as I know you should be careful with all kinds of stone dust
because as far as i know it is not only the material itself that may
cause health problems but also the grain size or better the particle
size that swirls around while you work. Especially the very small
particles of stone dust may enter your lungs and will never go out
again.
Anyway, keep on carving,
Christian
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Dipl.Geol. Christian Schneider stefchri"AT"t-online.de
Dipl.Geol. Stefanie Rath srath"AT"mail.sedpal.uni-bremen.de
Richard Dehmel-Str. 49
28211 Bremen
0421/2439539
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