Dead CRT disposal?

[Penthode]

When I was a high school student, I worked in a TV shop. Their method was to simply grab a pair of pliers and break off the evacuation nipple. It is safe as it lets the air in gently without risk of implosion.

I would always keep away from the bell of the tube since risking the integrity of the bell could lead to a nasty mess. Knocking the neck off is quick but more risky. Ilike to keep hammers and other heavy metal objects away from glass CRTs.