I met a couple (GPAA Members) in the BH of SD from Wisconsin who said it is illegal to prospect and minerals deposits in Wisconsin. I has to do with a large gold find by a company that were mining another mineral. The State shut prospecting down after that.i live in nw illinois. i might be wrong, but i think i read that any kind of gold prospecting in illinois is illegal, that the state owns all the mineral rights. so i guess if you do find gold, you are suppose to turn it into the state. in other words, go tattle on yourself.