dang, do we get two trys?
i'd like to think about it and get back later, gotta split for a training class this morning.
so heres a split second guess:
"we ran out of good rock"
Double Dang!!!
DIED had the same initial hunch I did! If he's right, I have obviously missed my calling in life and should have paid more attention in my geology classes in college! I can't wait to meet you in person one day, DIED, since we obviously have so much in common!