thanx for the introduction Mark, ha
That list was a noble idea. A compendium that all-you-need-to-do, is look at the list, removing guess work, asking, etc... Right ? And the way that list was compiled, was the same way that the book "Treasure laws of the United States" (by R.W.Doc Grim) was done: They just asked the powers-that-be: "What are your rules regarding such & such?". And/or had taken the info from previously compiled lists that started in that way.
A genius idea, right ? I mean, who better to ask, than the top park's spokespeople themselves afterall, eh ?
But strange answers arose. Like some would say "it's not allowed". But when/if they cited their sources to backup such answers, it was sometimes odd-ball things like cultural heritage, disturb/alter, take/remove, etc.... And some of the dire-sounding states were ....... prior to that, just open game (barring obvious historic monuments). So you had old-timers scratching their heads saying "since when?"
It was obvious cases of officials receiving this inquiry, who .... gave the "safe answer" routine.
Yes, admittedly some of them have actual and true specific rules that say "no detecting", or perhaps allowances, permits, or "beach only" etc.... But multiple others are silent on the subject. So the "pat answer" might have been "inquire at each kiosk you come to". Yet when you click on the state's name to get the detailed version of the law, you see no such requirement that md'rs are required to grovel at each kiosk they come to.
So if someone's going to use that list, I would click on the detailed back-up verbiage that is provided. And unless it specifically said "no detecting", then I would go. Oh sure, don't snoop around obvious historic monuments is all.