Use concrete and build the bunker into the side of a little hill. Plain old dirt stops radiation if it is thick enough. The hillside should do the job. Make it comfy as you might be in there for a while.
The problems you get with this are:I live in a large town the size of 250,000. i live in a residential area. i don't have land to dig up and drop in a shelter. has anyone done the thing where you cut a hole in your basement and start digging a shelter right friom your basement. taking out dirt one 5 gallon bucket at a time? Sounds nutty but it could be done. Has anyone done this? My wife would think I had lost it.
Very cool, man!I heard a story about a guy who purchased several old rail-road cars (passenger cars, sleeping / dining / etc) and then started digging a hole in the ground. He then carefully placed the 4 cars into the hole in the ground and built a "connecting tunnel" between all the cars so that he could go back and forth from the dining area to the sleeping to his "living room"). Once he had all that setup and working fully open to the air he built sky-lights and a stair-way that reached to the "grade-level" - above ground.
He then back-filled the hole till only the stair-way and skylights were visible - built a large garage for his vehicles and access to his underground home. Sky-lights allowed sunlight to brighten the home, ventilation came through the garage and circulated via solar-powered fans. The whole setup was powered via 12volt LED lighting and solar-charging systems.
All-in-all - it looked like it was well designed, built and lived in.
I think the idea is cool as well. Gives me an idea on building a "panic" bunker for a friend who is new to prepping.Very cool, man!