STUHOSS

Can't tell from the picture if he is wearing safety glasses or not. In my shop the first activity upon entering shop is to put on safety glasses.

I wouldn't be peening on the saw table either, but I would guess that probably he is just taping the peening hammer, not swinging at it! Probably not hard enough to shatter it or chip it! if he has to swing the hammer to peen, he is using the wrong tool!!!