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  2. Norfolk and Western M Class - Wikipedia

    en.wikipedia.org/wiki/Norfolk_and_Western_M_Class

    The Norfolk and Western M, M1 and M2 Classes were a series of 4-8-0 steam locomotives owned and operated by the Norfolk and Western Railway (N&W). The M Classes were primarily assigned to pull the N&W's mainline freight trains, but following the introduction of the railway's Y Class 2-8-8-2's, the M Classes were reassigned to short line freight service.

  3. 4-8-0 - Wikipedia

    en.wikipedia.org/wiki/4-8-0

    Built by Baldwin Locomotive Works from 1906 and nicknamed Mollies, the class M, class M1 and class M2 became the most numerous American class of 4-8-0. Norfolk & Western class M2. The class M2 locomotives are often mistakenly believed to be the largest conventional 4-8-0s built, but the Mexican PR-8 was over four tons heavier. Many of them ...

  4. Norfolk and Western 475 - Wikipedia

    en.wikipedia.org/wiki/Norfolk_and_Western_475

    No. 475 is the 101st member of 125 M class steam locomotives built for N&W in 1906–07, rolling out of the Baldwin Locomotive Works in June 1906 at a cost of $15,179.90. [2][3][4] It was originally equipped with Stephenson valve gear and a 6-A type tender, which holds 10 short tons (9,100 kg; 20,000 lb) of coal and 6,000 US gallons (23,000 L ...

  5. Baldwin Locomotive Works - Wikipedia

    en.wikipedia.org/wiki/Baldwin_Locomotive_Works

    A private Railway operating in New Zealand at the time exclusively purchased Baldwin products after facing the same difficulties with British builders the NZR had. The Wellington & Manawatu Railway (1881–1909) operated small fleets of 2-8-0 (4), 2-6-2 (6), 2-8-2 (1), 4-6-0 (2) and a large 2-8-4 (1) tank locomotive. When the NZR took over the ...

  6. Norfolk and Western 433 - Wikipedia

    en.wikipedia.org/wiki/Norfolk_and_Western_433

    Disposition. On static display. Norfolk and Western 433 is a preserved class M 4-8-0 "Mastodon" type steam locomotive built by the American Locomotive Company 's Richmond Locomotive Works in January 1907 for the Norfolk and Western Railway. It was one of 125 M Class engines in operation on the N&W for around 50 years.

  7. Northern Pacific Railway locomotives - Wikipedia

    en.wikipedia.org/wiki/Northern_Pacific_Railway...

    The 2-8-8-4 was first built for the Northern Pacific Railway in 1928. The 4-6-6-4 locomotives were so large that in many places in Montana the Northern Pacific had to widen the centers of its double track on the Rocky Mountain Division. As a rule they did not work west of Easton, Washington, due to the confines of Stampede Tunnel under the ...

  8. Union Pacific Big Boy - Wikipedia

    en.wikipedia.org/wiki/Union_Pacific_Big_Boy

    Cost to build US$ 265,000 in 1941, equivalent to $5,489,457 in 2023. The Union Pacific Big Boy is a type of simple articulated 4-8-8-4 steam locomotive manufactured by the American Locomotive Company (ALCO) between 1941 and 1944 and operated by the Union Pacific Railroad in revenue service until 1962. The 25 Big Boy locomotives were built to ...

  9. Pennsylvania Railroad class M1 - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania_Railroad_class_M1

    The M1 was a class of steam locomotive of the Pennsylvania Railroad (PRR). It was a class of heavy mixed-traffic locomotives of the 4-8-2 "Mountain" arrangement, which uses four pairs of driving wheels with a four-wheel guiding truck in front for stability at speed and a two-wheel trailing truck to support the large firebox needed for sustained power.