How can glass be silica-free?

Recycled bottle glass is chemically known as Amorphous Silica, which means it contains less than 1% free-silica. Free-silica is commonly found in traditional blasting sand and other hard abrasive sandblasting medias. Silica-sand dust in its natural state has an...

Is crushed glass dusty?

All abrasives are dusty. However, because most of the glass is clear the dust is actually translucent, allowing for far greater visibility than traditional abrasives.