Adds prospecting to enrich ore patches. Extends the lifetime of ore patches with some investment, but comes with the drawback of making mining slower.
Mods introducing new content into the game.
New Ores and resources as well as machines.
MK2 prospectors that have quality, when placed, show they can't prospect anything the same way they show it when a whole ore field has been successfully prospected.
I haven't tried with MK1 ones but I suspect it is similar.