Sam,
Thanks for that link - that's very good stuff and I book marked it after I read it. I guess I had never thought about injection wells causing seismic activity, but then again in my uneducated opinion, I find that hard to believe! The first paragraph about the rapid extraction of oil/gas is a little more likely, I would think, consider that there are Utica wells in Canton pumping out bcfs of gas and wet gases every day (talk about a gusher!).The natural earthquake thing is likely as well. My comment about fracking really wasn't serious, I know that it doesn't! After this summer's quake one expert said this: “If Marcellus drilling caused an earthquake hundreds of miles away, and then it also caused the Great Depression, the Black Plague, the October Revolution, and the break-up of the Beatles.”