Tools, Chutes And Gates

 The water wheel pumps salty water out of the mine.  I think it's beautiful  The barred photos are down mine shafts used to bring items up and down between levels.  The model below is of a crank pulled by horses that lifted the salt blocks (up to a ton each) from lower levels.  Even horses rode in these chutes sometimes, since they don't do stairs and ladders well.  The last is one of the gates to the stairs.