Yep, and it never hurts to give them all safety glasses. Get the cheap $2 kind and let them keep the glasses. Sometimes older guys get cranky over wearing glasses, but to a kid, it makes them feel like more a part of the whole thing. Also gives them a souvenir.
Case in point, the only thing I remember about the field trip of a car plant I took when I was 6 was the fun of getting to keep the glasses!