The owners don't make money when they have to ship them back empty so they sell them off to. Create the cargo container shelter during non-tornado season.
finally found what I was looking for, it's going to need to be bermed for use as a shelter, I have seen people out there burying shipping containers, but the cost .
Aside from the obvious size differences where our single-unit shelters are up to twice the size of a standard shipping container; every underground bunker that .
Turning A Shipping Container Into A Storm Shelter Construction and DIY projects Forums – Thehomesteadingboards.com.