Mobsters spent most of their life in prison ...

And dont flip and was still active.

In italy if a mobster get sentenced doesn't mean that he is out of games. But in the US who are the mobsters that spent most of their lifes in jail and doesn't flip and try to do money behind bars.

I think to bruno Indelicato that was jailed from 1986 to 1998 and 2008 to today or Sonny Franzese that from 1967 during his 50 y sentence was very active and even in his 90s continue to shake down activity. Any other names?

Gene Gotti, Matty Maddonna, Hippy Zanfardino (genovese), Froggy Galione (Luchesse).

Now that I think about it, Louie Bagels Daidone is doing life and I'm sure he was given option to flip. Never did.

The snake persico

Bobby Manna, Johnny Joe Spirito, definitely Bruno and Carmine Persico would be near the top of the list.