Early CRTs had no implosion protection, and required a separate safety glass. In the 60's they started bonding the safety glass to the front of the CRT for a more modern look, and less glare. In the 70's they got rid of the bonded safety glass and went to the tensioned metal band around the edge to reduce cost and weight. This system was used up until the end of CRT production.
I was disposing of some CRTs about 20 years ago, and thought it would be interesting to just toss them in a dumpster while still under vacuum. One was a modern tension band CRT, the other was a 60's CRT with no implosion protection. The one with the tension band broke with little drama. The one without went off like a bomb when it hit the bottom of the dumpster, and glass rained down all over the place.
Funny you should say that.
When I worked at a TV studio, we regularly changed the picture tubes of Picture Monitors, disposing of the old ones in a large dumpster.
Throwing them in rarely broke them in any way, so we normally poked the neck with a long piece of what in Oz is called a "star picket".
On one occasion, we had to dispose of some smallish late 1950s CRTs.
They did break, but not spectacularly.
Before that, I remember throwing some TV tubes out at the local garbage dump.
Even though they fell a fair distance, they didn't break, so concerned, I told the tip attendant.
He replied that they seldom did, but that the big metal wheeled compactor made short work of them!