That grey layer is like three inches thick... and that’s with compaction of more (70 million years?) of limestone, which is composed of the exo-skeletons of plankton and whatnot.
Hope this baby doesn’t blow again.
If it does, there is not much we will have to worry about. Areyou listening to Mark, ed & SGT Sam today? That gal who called in earlier - I think donna was her name. She and the next black caller should not be allowed anywhere near a voting booth.