Wealthy folks from sea to shining sea are getting very concerned about a mine shaft gap, and they’re ... At the same time, private bunker sales are on the rise globally, from small metal boxes ...

“It’s kind of hard to tell whether it’s a big deal or not a big deal.” Route 80 sinkhole: Sinkhole in Wharton caused by abandoned mine shaft The ovoid depression is one of many pits, shafts, and ...