Dear Drjoe thanks for the info and the concern.
I've had this arm/cartridge combo for almost 20yrs. as well as several friends, without any problems. I would think that if you're in a small enclosed area without any venilation your point would be definitely a real concern but in a well venilated room with high ceilings...
Also, don't they still use mercury for fillings? If so, wouldn't that be more of a problem to your point?
Thanks,
Elam