Replace a small fraction of the tiles in an ore patch by tiles of a different type. - 'Help there's coal in my copper ore!'
Mods introducing new content into the game.
New Ores and resources as well as machines.
there is a vanilla way to get rid of resources, just set up a requester chest in front of your flametrowers and let the robots fill and replace it
Oh I didn't know that trick. Mine works way before you get robots though.
