was originally carried out at Mulhouse and Graffenstaden (for German production), and Belfort for the French production. Both plants also exported models. However, after the First World War, Mulhouse and Graffenstaden built French steam locomotives, and Belfort specialized in the construction of electric locomotives. During the 1890s the company was particularly noted for its fast and efficient compound locomotives designed by Alfred de Glehn. Diesel Engines Diesel engines built at Mulhouse have been sold worldwide primarily for ship propulsion, locomotives and railcars, and as power generators. The range of diesel engines produced by SACM included: MGO (MAREP Grosshans Ollier) 175 mm bore, 6 to 16 cylinders AGO (Alsacienne Grosshans Ollier) 195 mm bore, 12 to 16 cylinders AGO (Alsacienne Grosshans Ollier) 240 mm bore, 12 to 20 cylinders MAREP Moteur MGO was the Société de Matériel et de Recherche Pétrolière. Grosshans Ollier refers to Georges Frédéric Grosshans and Jacques Gaspard Ollier who held a patent for liquid-cooled pistons, US patent 3,323,503 of 6 June 1967. Examples of SNCF locomotives using these engines were BB 63400 (MGO engine) and CC 72000 (AGO engine). See also List of SNCF classes References Bibliography Michèle Merger, Les entreprises et leurs réseaux, Presses Paris Sorbonne, 1998 () Marie-Claire Vitoux, SACM, Quelle belle histoire! : De la Fonderie à l'Université, Mulhouse, 1826–2007, La Nuée bleue, 2007 () External links Locomotive manufacturers of France Wärtsilä