The coal mines in the Ruhr area, which are also called collieries, were used for mining, sorting and extraction of the underground rock coal deposit.
 
The finished model consists of about 15000 individual parts and can be built partially modular in different modules and is equipped with some details. Included are the PDF building instructions for the large winding tower with the two rope sheaves, the machine house, including rope drive, the chimney and the coal washing building. The rope sheaves can be driven prototypically via a drive in the machine house. A synchronous shaft transmits the power evenly to the lower part of the winding tower. Here, there is also a tension pulley that tensions the rope.
 
From the coal washing building, the hard coal is loaded onto the trains via a conveyor belt. The conveyor belt is driven and, with the "pieces of coal" attached to it, conveys the feeling of a working plant.