I couldn't resist the chance to throw in two old "reiterated" stores about old, flat sided nails. My first flat sided nail I found was at a National Park, called Yosemite, here in California. Back in the early 70's, I had an old Bounty Hunter, in a camp site in the park and I was looking in the sand by the side of a lake we were camped at. One of the rangers at the time roared up in her jeep and jumped out and said: You can't use that metal detecter here, this is a National Park, and this is an old site where a fort from the 1800's once was. Well, if you can believe it, I "almost" got an attitude with her, but she slowed me down real quick when she said, if you persist, we'll take away your metal detector and give you a huge fine. That stopped me!!!! I just didn't realize how serious it was to be digging up artifacts in a NATIONAL PARK. How stupid is that, but now I know, or at least I thought I knew. The other time I found a "square nail" as we sometimes call them was in the state of Nevada at an old mining town, where a park ranger told me earlier I could be fined up to $3000. be thrown in jail and have my car confiscated. Well, I thought I'd be slick and go to a very remote mining town and hunt for stuff. I got so scared after I found one square nail, I packed it up and hauled ass out of there. Too scarey for me. Marc Trainor.