Germany. Running numbers 99 5901-3 and 99 5906 are in working order. The Blonay–Chamby museum railway has two Mallets. First to be acquired was the Hanomag G 2x 3/3 No104. At 56 tonnes this locomotive was one of the largest steam metre gauge locos ever built in Europe. It was in service until 1979, and as of September 2021 is still under restoration. There is also a G 2x 2/2 No.105 built by Maschinenfabrik Karlsruhe. As of September 2021 it hauls tourist trains on 5% grades. ABPF-SC (Brazilian Association for Railroad Preservation – Santa Catarina branch) has restored a Mallet to working order. It hauls tourist steam trains on 3% grades. The first official train ran on April 30, 2017. Terminology As a French-speaking Swiss, Mallet pronounced his name accordingly, something like "Ma-lay". Mallet's original patent specifies compound expansion, but after his death in 1919 many locomotives (particularly in the United States) were articulated Mallet style without using compounding (for instance the Union Pacific Big Boy). When fleets of such locomotives appeared in the middle 1920s the trade press called them "Simple Mallets" — i.e., simple locomotives articulated like Mallets. The term "Mallet" continued to be widely used for simple as well as compound locomotives. References External links Baldwin description of Mallet locomotives from 1912 Proctor, MN Steam Locomotive No. 225 Lake Superior Railroad Museum Duluth, Missabe and Iron Range Steam Locomotive No. 227 Lake County Historical Society Steam Locomotive No. 229 Steam locomotive types Compound locomotives Articulated locomotives