Well knowing ( as a painter ) what lead can do, then i would urge people to police their lead if possible. ( there is a reason lead based paint are banned now )
I mean its not like it is hard to do, and even here in my little hell hole of a country that is like ultra green or at least pretend to be and ask a whole lot ( in taxes ) to support that, there are not even a tax on disposing of the lead, hell i even think you can make money on it.
But yeah the stuff come out of the ground, what some people tend to overlook is it come from deep under ground where no people and animals generally are / live.
So if you bring it up into society i think it is only fair to show some consideration.
Asbestos it also come out of the ground, again not stuff you want to use for fake snow in movies ( have happened ) or other silly antics, you be wise to be careful around that stuff too.
Say the guy that so far put a few kilos of lead into the back corner of his friends field, but i / we are working on solutions, just take a while as we can not just go and buy stuff to put together to a trap, we are forced by our meager pensions and numerous hobbies to be creative..