A burner drill is indeed a workaround, but thats not exactly my preferred solution. Thanks anyway.

Thanks for your replay. I understand that I have to give it the requiered fluid to mine uranium. But I don't want the uranium. I want the last iron from that location and can't place the drill in a way it only covers iron. In a sense iI want to be able to control what it drills or to be able to cont...

I have put an electric drill on top of some iron and uranium. After drilling some iron, looking at the specs of the drill, the second bar with the fluid builds up untill halfway and then drops to almost zero. The symbol for drilling iron changes then to uranium and the drilling stops, even though ir...