Great Post Shiela! that was alot of cool stuff to read
I watched Myth breakers a little while back on the coffin thing and they proved that even if a coffin could survive the burial (because of the weight of the dirt) a person could not last more than a couple of hours in a coffin
They buired themselves alive, he only lasted like 20 minutes.
Not sure if anyone has watched this show or not but it is pretty cool