This morning about 9:45, there was a "boom" in the house. Dogs jumped up, a few "cats meow" things fell off the wall. I checked in the house (hotwater heater blow up?), looked outside (crazy neighbor blow something up?) Coulnd't see anything immediete. Didn't feel like an earthquake (they're more rumbly around here) Called SU at work about 5 miles away - they felt it, so the whole surrounding area felt it. I'm still trying to find out what it was. Saw the end of a newsbreak on TV about a mine roof collapse in WV - but I would think that would be to far away for such a short, noticible effect. Update later.......