Go to search mines, Advanced search, set the country as United Kingdom and then the OS Sheet as SW.
At that point there will still be too many results to display (e.g. on map) so you may need to break it down into multiple searches, perhaps by mineral type
So pick LEAD for example and show as map (nothing near Troon) so work your way down
TIN -- you get a load of results near Troon
But work through other minerals in turn (obviously pick likely ones 😉 )
Unless anyone else knows a better way to search?
Make your searches quick though and note the results, as you've seen from other posts, Aditnow is due to take a rest 😞
Expert in incompetent tomfoolery