★ Rattle-Continued From Page 13lose much sleep. At least that’s the opinion of Dr. Bollinger.Usually there are one or two earthquakes that people can feel each year in this area, but in Tech’s history of earthquakes for the last 200 years, there has been no record of death caused by an earthquake in Virginia,’* Bollinger said.Bollinger said that usually quakes felt in this area are just bad enough to rattle people’s dishes, or maybe break a window.Virginia is in a minor seismic zone, as compared with areas like California which are in major seismic zones. Dr. Bollinger 6a idno one really knows what makes an area earthquake-prone.Virginia’s lack of sizable earthquakes is probably tied in with the Appalachian Mountains,” he said.One reason so little is known about earthquakes is that there are so few observatories, Bollinger said. Tech’s seismographic facility makes up one of 125 identical stations of the U.S. Coast and Geodetic Survey.Bollinger feels that the reservoirs and lakes in the New River Valley do not add to the potential for earthquakes, as most have been here for at least 10 or 20 years and have caused no problems.