Siegfried-Giesen potash mine
The mine has 4 shafts. The mine was left with just one winder when it was put on care and maintenance in 1987. There are plans to start production again and the winder is now being replaced but access to the mine is still required at the same time.
The mobile winders are normally used as emergency winders, for special transport jobs and for general access to shafts for inspections (especially if there's no winder left).