Hydraulic Winder Conversion and Upgrade Early Engagement Notice

The National Coal Mining Museum for England is aware of the need to update and convert our hydraulic winder to an electrical system. The existing hydraulic winder system is plus-thirty years old and the valves are now obsolete. The braking system at present is such that dynamic braking is achieved using the hydraulic circuit prior to mechanical brakes being applied, in instances of issue or failure with the hydraulic system this can leave the cage temporarily under the action of gravity while the mechanical brakes...