Welcome to your local mine! Residence of the miners is located outside, with additional rest areas down on the lower levels.
Levels 2 & 3 have been the most actively mined over the past few decades. Abundant in coal, much of which has been mined and shipped abroad already. The over focusing on these levels caused instability on the north eastern wall. A collapse occured and sealed of a section of the mines on the floor 4, while also losing much of the 2nd and 3rd floors.
The dwarves worked switfly but have yet to gain access to that section of floor 4 as of yet. Much earth fell, and all who were buried, surely have perished by now. They have continued this clearing and restructuring heavily on the 4th floor, while limiting current mining expansions on 2 and 3. New tracks were added and ran down to the lower levels, additionally a lift was installed on the west side of floor 3 which has greatly increased the dwarves efforts in re-stabilizing and reopening the mining of the upper levels.
The dwarves are continuing development on the lower levels as well and only occasionally come up to the surface level to restock food and supplies before returning down to the lower levels.