In the early 1960s twenty NOHAB diesel engines were built for Hungarian State Railways (MÁV), but due to the Iron Curtain, further imports were stopped in favour of M62 locomotives made in Soviet Union. The Swedish locomotives were classified by MÁV as type M61 and proved versatile, highly reliable as well as economical to run. They were even used to haul non-stoppable radioactive waste transport trains from the Paks Nuclear Power Plant to Soviet reprocessing facilities, despite the availability of Soviet-made M62 engines.

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