A long time ago I used to write scientific papers and went to conferences. These were my glory years in the old company. :) I went to Charleston for a conference, and looked at all the old buildings that survived their big earthquake of 1886. I looked at all the new construction, and it didn't look like they gave a hoot about earthquakes! Now, they are holding school drills. Very nice, more than Toronto.
The source zone at Summerville really looks like one of my 'Growing New Madrid' zones. I wish they could afford to put decent seismometers on it. When will it produce the next big earthquake?