|
Silica = sand = glass. Small particles can get trapped in your lungs. Yes, they can be sharp, pointed pieces. The guys who used to make the flints for flintlock rifles years ago used to have troubles cause of silica (flint = silica). Silicosus (sp?) or some such disease was what they got. Make sure you have a good respirator if you use that stuff.
Jigman
|