O&K 1

Manufacturer: Orenstein & Koppel

Type: MB 170 S

Year of manufacture: 1979

Weight: 18 metric tons

Performance: 105 kW / 143 PS

Original track width: 750 mm

Last operated by: RAG Walsum

Factory number 26953
The locomotive was delivered in 1979 to Bergbau AG Niederrhein, Walsum Mine.
There, the locomotive served as a yard locomotive with the road number 1.
On December 8, 2011, the locomotive was transferred to the Rheinisches Industriebahn Museum e.V. (RIM) in Cologne-Nippes.
On August 25, 2014, the locomotive was transferred to the Minièresbunn.
A total of two of these locomotives were built. The second locomotive, with factory number 26969, was delivered in 1981 to Bergbau AG Niederrhein at the Walsum mine complex. There, it was assigned road number 2. This locomotive also arrived at the Rheinisches Industriebahn Museum e.V. (RIM) in Cologne-Nippes on December 8, 2011, where it regularly performs its duties.
The Minièresbunn locomotive underwent a major inspection, during which, among other things, its gauge was converted to 700 mm.
The locomotive is equipped with a 6-cylinder Deutz diesel engine and a Voith “Diwabus” transmission (hydraulic converter).