Best way to make rocks into dust? (organic forum at permies)
People who work in rock, stone, or other minerals that require being crushed pulverized, cut, etc have to use safety equipment. Respirators: N95 dust masks or better. Half masks with replacable cartidges are the best. Some rocks contain very fine particles think Asbestos. Silicosis. pnemonia, bronchitis, enphazema.