. >> brit eaton is a modern-day prospector who scours old west barns, ghost towns, and mining sites -for precious metals, but antique overalls. >> my gold is what the gold miners were wearing while they were seeking their gold. in order to be a great denim hunter, you have to be ruthless, relentless, and rugged. i've rappelled into pits, i've killed rattlesnakes to get by. there are so many potential dangers. >> exploring abandoned mineshafts can be treacherous, but often worth the risk. >> finding things in mines is the equivalent of big-game hunting. you find a time capsule just sitting there in the middle of nowhere. the feeling of seeking something is a true american sort of pioneer feeling. you're literally filling a gap in in history. >> and that's a good way to pose the question facing our heir, jock taylor. does his strange inheritance fill a gap in history, or are they closer to the jeans that fill the gap at the mall? >> they were in such great shape that i thought, "why are they showing me new jeans?" >> stay tuned for "p.s.i." -- pants seam investigation -- next. >> here's