Hi there,
I loaded up your save game and did 2 things.
there was no available storage space. All the stone chests and the large stockpile were full, so there would have been no storage to restock.I made a new stockpile.
There was no way to get out of the upper left mine because the ladders to it did not reach all the way down to the lowest level of the mine. I removed one of the ladders and built a new one that reached all the way to the bottom.