Question: The company that built the Southern Pacific 2706 went out of business in what year?

full_context: Document 1: Canadian Pacific Railway No. 1246: Canadian Pacific Railway No. 1246 was one of three 1200-series Canadian Pacific Railway locomotives in the Steamtown, USA collection. Like CP 1293 and CP 1278, this locomotive was one the operational engines at Steamtown. When Steamtown left its Bellows Falls, Vermont location in the fall of 1983, the engine led the "farewell to Vermont" excursions. There were two such 100 mi excursions "through a landscape of covered bridges, rushing streams and scenic countryside". The train had the capacity of 800–1000 passengers. Built in 1946, CPR 1246 is a 4-6-2 type, class G5c locomotive. After operating in Steamtown in Scranton between 1984–1986, it was determined that 1246 was inadequate for service as it was "too light for the heavy grades and sharp curves of the Steamtown line". The National Park Service sold it to the|Connecticut Valley Railroad]], in 1988. Note The locomotive was never owned by the Valley Railroad of Essex.Ct. The Railroad Museum of New England,changed their name from The Connecticut Valley Railroad sometime after they moved to Thonaston, Ct. The engine was moved to the Connecticut Valley Railroad This locomotive was on static display from 1996–2008, at the Valley Railroad in Essex, Connecticut. In 2008, it was moved to the Naugatuck Railroad which is operated by the Railroad Museum of New England, Thomaston, Connecticut.
Document 2: William Mason (locomotive): William Mason is a 4-4-0 steam locomotive currently in operation at the Baltimore and Ohio Railroad Museum in Baltimore, Maryland, United States. It was built for the Baltimore and Ohio Railroad, carrying that railroad's number 25. The locomotive is named in honor of its builder, William Mason, who built around 754 steam locomotives at his Mason Machine Works firm in Taunton, Massachusetts, from 1853 until his death in 1883. The engine is one of the oldest operable examples of the American Standard design, and the fourth oldest Baltimore and Ohio locomotive in existence, the oldest being the 0-4-0 no. 2, the "Andrew Jackson" from 1836, second oldest is the no. 8 0-4-0, "John Hancock" built later that same year, and the third being the 0-8-0 no. 57, "Memnon" of 1848 (the preserved "Tom Thumb" and "Lafayette" engines are replicas built by the road for exhibition purposes in 1926 and 1927, respectively). The "William Mason" had been the second oldest operational locomotive in the world, and the oldest in the western hemisphere. Only the Indian locomotive "Fairy Queen", built one year prior to the "William Mason" is older.
Document 3: South Australian Railways 400 class: The South Australian Railways 400 class was a class of 4-8-2+2-8-4 steam locomotives built in the early 1950s. The 400 class locomotives mainly hauled mineral trains on the South Australian Railways' narrow gauge Broken Hill line from 1953 to 1963, when they were replaced by diesel locomotives. They operated as far as far south as Port Pirie and Terowie and as far north as Quorn. The 400 class was temporarily returned to service in 1969 while the diesel locomotives were converted to . Two have been preserved, 402 at the Zig Zag Railway, Lithgow and 409 at the National Railway Museum, Port Adelaide.
Document 4: Southern Pacific 2706: Southern Pacific 2706 is a 2-8-0 "Consolidation" Class C-8 steam locomotive built by the Baldwin Locomotive Works in 1904 for the Southern Pacific Transportation Company (SP). It is one of three surviving members of its class, and one of many preserved SP 2-8-0s.
Document 5: Santa Fe 3751: Atchison, Topeka & Santa Fe 3751 is a 4-8-4 "Northern" type steam locomotive built in 1927 by the Baldwin Locomotive Works for the Atchison, Topeka and Santa Fe Railway. Built as the first Northern type steam locomotive for the Santa Fe, the 3751 served in passenger duties until being retired in 1953. The locomotive was then placed on display in San Bernardino, California until it was restored to operating condition in 1986. The 3751 is currently located in the Central City East neighborhood of Los Angeles and is listed on the National Register of Historic Places. Today, Santa Fe 3751 holds the distinction of being the oldest surviving 4-8-4 type steam locomotive in the world. The locomotive is currently owned and operated by the San Bernardino Railroad Historical Society who use the locomotive to haul occasional mainline excursion trains. It is currently due for its 15-year inspection, so it will be out of service for about 3-4 years.
Document 6: Diesel locomotives of Ireland: Although prototype diesel locomotives ran in Britain before World War II, the railways of both the Republic and Northern Ireland changed over much more rapidly from steam to diesel traction, in the 1950s than those in Britain, due to the island's limited coal reserves and (in the Republic) ageing steam locomotive fleet. The initial diesel locomotives for CIÉ were built and supplied by British railway locomotive builders (Birmingham RCW with Sulzer engines and AEI Metropolitan Vickers with Crossley engines), with notably poor results from the latter. From the early 1960s, locomotives with more reliable engines from General Motors Electro-Motive Division (now the independent company, EMD), of the USA, were adopted. In the late 1960s the Crossley engines were replaced by EMD 645 units in a major programme to re-engine the fleet. Since the early 1960s all new locomotives on the two Irish rail systems have been purchased from EMD, with the exception of three from Hunslet Engine Company of Leeds, England, for NIR in 1970.
Document 7: Santa Fe 2926: Santa Fe 2926 is a former Atchison, Topeka and Santa Fe Railway (Santa Fe) 4-8-4 steam locomotive originally built in 1944 by Baldwin (const #69814). This locomotive was part of the last group of steam passenger locomotives (class 2900) built for the Santa Fe railway. This class of locomotives were the heaviest 4-8-4's built in the United States, and among the largest. The railroad used the locomotive in both fast freight and passenger service, accumulating over one million miles of usage before its last revenue run on December 24, 1953. The locomotive and a caboose were donated to the city of Albuquerque, New Mexico in 1956 in recognition of the city's 250th anniversary, and placed in a city park.
Document 8: Southern Pacific Transportation Company: The Southern Pacific (reporting mark SP) (or Espee from the railroad initials- SP) was a name of multiple American Class I railroads that existed from 1865 to 1998 and all operated in the Western United States. The names that represented the Southern Pacific were Southern Pacific Railroad, Southern Pacific Company and Southern Pacific Transportation Company.
Document 9: New South Wales 79 class locomotive: In 1943, during World War II, four diesel-electric industrial shunting type locomotives built by General Electric Company, Erie for the United States Army Transportation Corps (USATC) were imported from the United States of America by the Department of Supply under Lend-Lease conditions for use at the Dunheved munitions factory in Sydney. They were four units of 58 units built for the USATC by General Electric numbered 8499-8528 & 7900-7929.
Document 10: Southern Pacific class AC-9: The AC-9 was one of two Southern Pacific Railroad's articulated steam locomotive class that ran smokebox forward after 1920. Twelve AC-9 class locomotives were built by Lima in 1939 and were Southern Pacific's largest and heaviest steam engines, partly a consequence of low quality coal these engines were designed to burn. The AC-9s were partially streamlined (the only articulated steam engines to be so equipped), having "skyline casings" inspired by Lima's GS series of 4-8-4's, also made for Southern Pacific, and were equipped with coal tenders, unlike the cab forwards. The wheel arrangement was 2-8-8-4, which was nicknamed "Yellowstone". Between 1939 and 1952, all the twelve AC-9 engines were in service between Tucumcari, New Mexico, El Paso, Texas, and Tucson, Arizona, where they mainly pulled freight trains and occasionally also passenger trains such as the "Golden State Limited". In 1952, they were converted to burn oil instead of coal, and moved to Southern Pacific's Modoc line between Sparks, Nevada, and Alturas, California, where they worked in freight service from 1953 until retirement in 1956.
Document 11: Malkotsis: Malkotsis is the trade name for "Technica S. Malkotsis A.E.", which has historically been the most important Greek engine manufacturer, surpassing several engine (mostly diesel and semi-diesel) manufacturers that flourished in Greece in the 1920s and (mostly) 1930s, like "Dimadis-Kanakis" in Volos, "Peteinaris" in Kalamata, "Sideris", "BIO", and others in Athens, etc. Located in Piraeus, before World War II "Malkotsis" produced various types of industrial machinery. After the war it produced industrial machinery for several Greek companies, but it progressively focused almost entirely on diesel engines, soon becoming the largest company in its field. "Malkotsis" engines found use in a variety of industrial applications, while its boat engine models became legendary for their reliability. A series of electric motors was produced as well. Its "EM" Diesel series (designed in collaboration with a British consulting firm) included engines specifically designed for powering of vehicles and was employed in "Malkotsis's" own farm tractor models ("Malkotsis EM-2" and "EM-4") introduced in 1959. The tractors were produced for only a few years, due to lack of funding and other problems related to a complete lack of state support. The company faced financial problems later, due to competition from cheaper imports, and was acquired in 1991 by Drakos-Polemis A.E., a pump manufacturing company which used all "Malkotsis" infrastructure for its production purposes.
Document 12: American Bridge Company: The American Bridge Company is a civil engineering firm that specializes in building and renovating bridges and other large civil engineering projects. Founded in 1900, the company is headquartered in Coraopolis, Pennsylvania, a suburb of Pittsburgh. The firm has built many bridges in the U.S. and elsewhere; the Historic American Engineering Record notes at least 81. American Bridge has also built or helped build the Willis Tower, the Empire State Building, the Chrysler Building, launch pads, resorts, and more. During World War II, it produced tank landing ships (LSTs) for the United States Navy. Competitors include Walsh Group, Flatiron Construction, and Skanska USA. Related companies include American Bridge Holding Company and American Bridge Manufacturing Company, both also headquartered in Coraopolis.
Document 13: Southern Pacific Depot: The names Southern Pacific Depot, Southern Pacific Railroad Station, Southern Pacific Railroad Depot, and variations, apply to a number of train stations operated by the Southern Pacific Railroad. Many of these are historic and are listed on the U.S. National Register of Historic Places (NRHP).
Document 14: Southern Pacific 4460: Southern Pacific 4460 is the only surviving GS-6 Class steam locomotive. The GS-6 is a semi-streamlined 4-8-4 Northern type steam locomotive. GS stands for "Golden State". The locomotive was built by the Lima Locomotive Works for the Southern Pacific Railroad in 1943. The GS-6 lacked side skirting and red and orange "Daylight" paint found on previous locomotives of the GS class, and were painted black and silver instead. This was because the US government controlled locomotive manufacturers during World War II and had turned down Southern Pacific's order of fourteen new Daylight locomotives. Southern Pacific re-designed the engine for general service and it was finally approved, but the government took four of them and gave them to the smaller and power-starved Western Pacific Railroad. Their smaller size when compared to previous GS class locomotives and the fact that they were built during World War II earned them the nicknames of "War Babies" and "Baby Daylights".
Document 15: Baldwin Locomotive Works: The Baldwin Locomotive Works was an American builder of railroad locomotives. It was originally located in Philadelphia, and later moved to nearby Eddystone, Pennsylvania. Although the company was very successful as the largest producer of steam locomotives, its transition to the production of diesels was far less so. Later, when the early demand for diesel locomotives to replace steam tapered off, Baldwin could not compete in the marketplace. It stopped producing locomotives in 1956 and went out of business in 1972, having produced over 70,000 locomotives, the vast majority powered by steam.
ground_truth: 1972