I am a big Fallout Fan and love the game. This mine is one of my Mine collections. It is not printed full size, only 4 inches or plus a little extra due to my printer limitations. But you can resize it much larger if you need to. With this size of print you don't really need any supports. Anything bigger you probably will need them.
I printed mine with any core material as I will be filling the interior with Plaster of Paris for mounting.
The file was created on TinkerCad.