Ditmar/Gayle on wed 28 jan 98
Unless I'm mistaken, when you roast an ore, you're driving off undesirable
components by vaporizing and/or oxidizing & vaporizing them.
Guess where the arsenic is going !!!!!? ....into your studio and the
( Excessive sulfur dioxide being another problem with many ores. )
Unless you've got industrial stack scrubbers and precipitators, roasting
ores can be pretty dangerous.
( If you REALLY do your homework and know exactly what you've got, you
might be able to roast ores without heavy metals or certain other
concentrations of impurities. )
From Alohaland, Ditmar.