Fascinating. Will look at it. Does this always happen, or what?
"The psychological trials of dwellers in the last times will be equal to the physical trials of the martyrs. In order to face these trials we must be living in a different world."
It happens maybe 5 times out of 10. The minehole is located about 20 tiles from the construction sign.
I just login on the surface, go into the mine hole, exit it, and boom.