Just thought I'd let you guys know I now use safety goggles and earmuffs w/ 20db protection. The goggle completely encase the eyes and don't allow anything in. They work much better than typical safety glasses and they have antifog wents on the sides that work great. With the safety glasses, stuff still got past them, but not anymore wth the goggles. And about the earmuffs, sooner or later I'll get either Elvex or Peltors with the built-in radio. My questions? Does anyone else use safety goggles? And also I've seen some muff radios that have what they call a "communication channel"....what does that mean? Are they like walkie talkies?