The US, like many countries and regions, has poor coverage of abandoned, closed, and shuttered mine sites despite such sites still posing an ongoing danger in terms of imminent physical danger (collapse, decay, etc) and untreated waste piles and ponds leaching toxins into ground waters, etc.
To answer the question posed, "how many (US?) mine sites pose a danger of type {X}" requires crawling the US BLM datasets, the OSHA datasets, the archived (from when active) MSHA datasets, and having a some luck onside for various specific sites due to large gaps and periods of not caring at all.
Various transnational global mining companies (Rio Tinto, et al) have extensive datasets on global resources and minesites, both operational, and past and potential future sites.
Turning off soap opera setting on every single person I visit... and watching their reaction ... "dude...... I've been arguing with my wife about this and she thinks im crazy!!!"
Which was the GTA where you rode around on a dirtbike out in the california mountains, and there was like bootleggers and stuff.... man i have serious memories of that game
Some do. It would also be nice to reference by ordinal number similar to order by. Very handy for quick and dirty queries. I can see the issue though that people start to lean on it too much.
The problem with this and similar requests is that it would change the identifier scoping in incompatible ways and therefore potentially break a lot of existing SQL code.
I imagine it would be no different than current indexing strategies with a temporal aspect baked in... it would act almost like a different site, and maybe roll up the results after the fact by domain
No, I shall not "be worried." Unless you are some spineless blob of agencyless ooze... you should be able to parse reality in such a way that your day not need to be filled with worrying