AL: BECU dust wont kill you or give you cancer the next day, but it will eventually. just like saying smoking won't kill you if you have one or two. sure a little scratch or grinding one or two tools probably won't shorten anybody's life, but my friends didn't have a clue they were grinding BECU daily and they are not around any longer and cause of death was the standard CANCER which covers just about anything they don't know what the cause really was.
once they figure out the cause of Alzeimer's, cancer and other diseases your live for today attitude might have a different outlook, but sadly the way they are going that discovery won't happen while we are alive.