Class 25 (Locobase 15485)

Data from DeGolyer, Vol 80, pp. 168+. See also the GhostSoliders website entry on "Sloss Furnaces" at [], last accessed 14 October 2013; "Great Iron Combination", New York Times (14 August 1899); and Alex Lichtenstein, "'Through the Rugged Gates of the Penitentiary':Conflict Labor and Southern Coal", in Melvyn Stokes and Rick Halpern (eds), Race and Class in the American South Since 1890 (Providence, RI: Berg Publishers, 1994), pp. 3-42, esp. p 40.. Works numbers were 58410-58411 in May 1925 and 60388 in February 1928..

This design repeated the dimensions and weights of a set of superheated Consolidations sold to the Norfolk Southern in 1922 (Locobase 4949). Birmingham, Ala's SSISC was created in 1899 when the Sloss Iron & Steel Company merged with the Sheffield Steel & Iron Company. The intent was to pursue the development of a steel-making company--which it never did because the raw materials in the area simply weren't good enough to efficiently transform iron to steel.

On the other hand, its pig iron is described as exceptional, so it supplied local and regional pipe foundries (e.g.). A portion of the SSISC's mining work force consisted of local convicts supplied under the convict-lease system that was a common feature of much of industrialized Alabama from 1875 that persisted until a 1928 law ended it. (Sloss-Sheffield probably followed Tennessee Coal & Iron's lead and stopped using convicts well before that time.)

The design had 12" (305 mm) piston valves and 23 sq ft (2.15 sq m) of arch tubes contributed to firebox heating surface area.

When SSSIC began replacing steam with diesel, they returned to Baldwin in 1949 for small diesels.