Allegheny Steam Locomotive

 An "Allegheny" steam locomotive (2-6-6-6- configuration)

Built: Sixty of this type of steam locomotive were built for the Chesapeake and Ohio Railway company (C&O) between 1941 and 1948, by the Lima Locomotive Works.

Description: Articulated 2-6-6-6 (2 leading, 2 sets of 6 driving, and 6 trailing wheels). The heaviest reciprocating steam locomotives ever built. Tractive effort (force developed by the engine): 110,200 lbf. Weight: 389 tonnes. Peak power measured was 7,498 hp.

Duties: The name "Allegheny" refers to their task of hauling coal trains with loads up to 11500 tons over the Allegheny Mountains from White Sulphur Springs, West Virginia to Allegheny in Virginia. They operated with one loco in front and one behind the load. At the top the pusher would be taken off, turned around and sent back to the Hinton terminal. The single leading "Allegheny" would handle the descent down the mountain to Clifton Forge where it would be turned around for a return trip with a train of empty coal cars. In one operation, a 140-car loaded coal train was taken up the mountain from the Hinton terminal.

Significant Events: One locomotive, the 1642, suffered a boiler explosion at Hinton, WV in June, 1953, killing all three crew.

Retirement: There are two surviving Allegheny locomotives. Number 1601 is in The Henry Ford museum in Dearborn, Michigan, and 1604 is at the B&O Railroad Museum in Baltimore, Maryland. Neither is operational.

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