voodoo710, I do not put much stake into these type compendiums . Nifty lists that people have crafted like that. There are scores of such lists that have circulated. Eg.: people have tried to put together each of the 50 states "state parks" policies. People have tried to do nations of the world lists, etc... And .... like your list for sub-entities, within states. Ie.: tried to break it down into counties, and even cities . Which is FAR from comprehensive list of all the cities in Ohio, I hope you can see.
Here's where all such efforts break down : Guess how they find out their information to put in their nifty lists ? It's easy: You just send an email, or call the "powers that be", and ask. Eh ? What could be more easy than that, eh ? Who better to ask than the entity themselves, eh ? Or the list compiler went by someone else's info. that did the same thing before them (asked). Or rumor circulates that "so & so got a scram" (
I see such allusions on your list). Well ... gee, we have to put on the list that "
such & such place in doubt" (so that skittish md'rs can now all rush to bored pencil pushers in that city or county to "get it clarified", eh ?)
Now if whomever is passing out those answers, that arrived in that list
can give a chapter and verse that ACTUALLY SAYS 'no md'ing', fine. That's valid. But notice that the large majority of the dire info you get there is NOT backed up by any chapter and verse. I'm willing to bet it's arrived at exactly as I've said: MD'rs in the past (bless their little hearts) went asking "can we metal detect?". Whomever answers has images of geeks with shovels, passes the "pressing question" to a bored archie, and comes back with a "no". So now we can put it in these nifty lists, and all sit back satisfied that we've gotten the "safe" answer. Ie.: No one cared TILL you asked routine.
I see entire counties there with nothing but a "no", with no substantiation (actual law) that says such a thing. I'll assume they're talking about county parks, in those cases (not every inch of land within the county). But I'll bet you dollars to donuts I could detect in ANY ONE OF THOSE COUNTY parks, and be totally ignored (so long as it wasn't an obvious historic sensitive landmark).
If you are skittish, you can look up city muni codes on the cities website, wherever you go. If you see nothing there that says "no md'ing", presto, it's not prohibited. Same for county parks, etc.... Personally I don't even go to that hassle.