Hunting with a metal detector

Our neighbor across the street was packing up what looked like a sonar gizmo for fishing. I asked him if he was going fishing; he answered that he was going meteorite hunting on a friend's 50 acres out by the Mississippi where the fireball ended up a couple of days ago. I warned him that the fragment that was found on a guy's roof was stony, so the (now I understood) metal detector wasn't going to help.

Sounds like a fun afternoon. With a little more notice I'd have tried to see if I could invite myself and youngest son along :-)