Thanks everyone, We live in central Illinois. Are soil is wonderful, Sometimes I think the oldies sink to far for us to get to. The dime and penny were near an old tree, I did have to go through a few small roots. Maybe the roots kept them near the surface for us, 5 to 6 inches for those two, but we get clad deeper. Sometimes I don't get it.
Does anyone know how deep coins can go? I guess thats the big question. I know canslaw gets very deep. lol Thanks again, everyone