 Locomotive 99 222 remained on duty until 1966 on its original route, but when it became clear that the end was nigh, it transferred to the Harz and is in service today on the network of the Harz Narrow Gauge Railways ("Harzer Schmalspurbahnen" or "HSB") between Nordhausen, Quedlinburg and Wernigerode.In its time the Class 99.22 was the most powerful of the German narrow gauge locomotives and had Bissel axles.In addition the coal tank tapered toward the back.