That is a real good point,,, earthquakes, as a kid growing up on the big island we had a real big one when I was about 8 or 9 so maybe about 40 years ago,, mean action, everything left the shelves, everywhere, went into a store when trying to get home and just remember EVERYTHING being in the middle of the rows in sure save supermarket in Kamuela,,, got home and nothing was left unbroken if it was glass or in glass, it was smashed,,, an explosion would do the same thing, if it was big enough,, if you have glass jars of stuff and are canning your own I would suggest single row shelves with keepers like a board so nothing can come off the shelf, better yet, I keep everything on the floor in boxes or plastic bins, and only put lighter stuff up, its amazing how strong Mother Nature is.
