sorry to have sounded off i'm not too well at the moment and it makes me irritable i can only apologise, i shall try in detail to respond.
click on your geologist in the usual way, then when you choose the deposit you have a choice whether to hunt for deposit only or to hunt and construct, maybe a target location to re search could be implemented in that case then a simple search and build using building replacement, in either case all things can be solved. why would anyone choose to do a search overnight simply does not make any sense to me but to each their own.
in the image here each geologist already has its own popup which is what i am building from http://prntscr.com/ex0gdv
in this instance i am choosing to explore for a coal deposit and build automatically, however if i had a industrial coal mine then that option would pop up and allow me to chose or not to use it.
please take this on board and lets see if this can be worked on again instead of crashing it help to improve on the idea to make it work for you as well as for others
i redone the graphic to show the other options...
http://prntscr.com/exic7v