not only is he a mining expert but his dad was the guy who actually first invented the original version of this capsule, this rescue capsule, back in 1951. i don't know if you've been able to watch or see what they're doing, but chilean tv, homer, suggests this is just sort of standard maintenance. they're just checking everything out after those first successful trips. >> yeah. i'm really, really impressed. routine maintenance on this brand new capsule. it's only been used four -- six times, up and down this hole. this shows the planning, the thinking ahead, the laying out of the sequence of events that have to occur in order to keep this tube going up and down and bringing all these miners out. so, i mean, my hat is off to the chilean authorities and the engineers and the managers that have put all this together. clearly it does show a great