I got permission to hunt an 80 yr old rodeo grounds.It was built on a 100+ year old homestead site.I found $1.20 in clad and a 1955-d wheatie.No one has supposed to have ever detected it.Not so.I found fresh plugs were they had recently moved the bleachers.I have never hunted such a trashy place before.The ground is littered with pulltabs and crown bottlecaps.It was a nice evening,no bugs,cool and the dirt was soft and wet.