The building runs from the top of a hill to its base in an odd long thin building. The red-dirt and the black-stone go into the building at the top. Wire comes out of the doors at the bottom. Thirty mice work inside the building as many again work outside constantly shifting the red-dirt and black-stone from the docks up to the top of the hill.
Those inside always emerge from a work shift with faces blackened by dust and sometimes burned, and a season never passes without some poor mouse being lost to accident within the walls.
The pounding of hammers during the working times acts as signal to the nearby school mice that they must learn hard and fast and that they can only rest when the hammers stop.