I usually travel across the great state of Oklahoma... Nice State if the " Tolls " don't kill the budget.."
My discern is that Oklahomans cannot be safe in these "Box Like" structures as the state has more "Earthquakes" in recent months / years than CA.. Due to "Fracking" Not all areas of course... Watumpka...Apache and certain other places would be suited for such .. I was in Norman, OK recently and commented that you are damned above or below ground ..
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