It's dangerous work, tunneling into the ground. The world wouldn't be what it is today without mining, though.
I'm glad to hear the shuttle launched okay. I remember when the Challenger exploded. I was at home watching it launch on TV when that happened. So sad. One of my teachers that year was actually in the running to be on that shuttle.
I just hope it comes back down safely. Returning seems to be more of a problem for NASA than going up lately.