I didn't feel it at work, but my wife did. I like the "Quake Hammer" idea ! By the way, got too close to the chuck on my lathe tonight with a file, kicked it back hard enough to put the tang of the file halfway through my palm. Then I changed the oil in my son's two day old 1996 Ford Explorer before he headed down the NYState Thruway to Ithaca. It hadn't been changed in 80,000 miles ! That's right, 80,000 miles ago. It has about 240,000 miles on it. I drained out a whole 2 1/2 quarts of what I suppose was oil. An hour later he calls and says the radiator is leaking. 10 minutes after that he calls again and says it's on fire. Now it's at the junkyard. Must have gone in to shock after having it's oil changed. It's been a great day..... Shoo