I was taking the anvil out of some used primers and had done about 2-3 hundred when I noticed a primer cup on my desk stuck underneath something. I retrieved the primer and without looking to see if it had a firing pin mark, I commenced to taking the anvil out, to my surprise, it was a live primer that must have spilled when I was priming some ammo for reloading. When I say to my surprise. I mean that when it ignited and went Bang it scared the hell out of me. I didn't get hurt, my ears rang for about thirty minutes to an hour, but I didn't get hurt and I was, as always, wearing my safety glasses. That was an accident that I could have prevented by looking for a firing pin strike. Just remember to always pay attention to what you are doing, even though you have done it many times before. Take care and PAY ATTENTION when RELOADING or working with reloading materials. Has this ever happened to any of you??? I would like to know that I am not the only one.