The "Mountain" 4-8-2 was a fast dual-service locomotive that was bought by many railroads in need of more motive power for the ever increasing weight of passenger trains and to compete for fast freight. This type of locomotive was termed "Mountain" because it was originally developed to haul passenger trains over the Allegheny Mountains.  There were eight drivers for traction and a four-wheel lead truck for speed and riding stability.  In North America, 41 railroads bought or built 2,204 "Mountain" Locomotives from 1911 through 1948.

Number 802, built by the Baldwin Locomotive Works at Philadelphia in July of 1942, was placed in service on December 5, 1942.  Engine 802 was a Mountain-type 4-8-2, similar to 801.  It was delivered knocked down and reassembled in the Anchorage Shops.  It had no booster, weighed 473,600 pounds with fully loaded tender, produced a tractive effort of 43,100 pounds at 85 percent working pressure.  It was retired in April 1954 and scrapped.
 

CN 64366

Built by - Baldwin Loco. Works Year built - 1942 Type - Mountain Weight on drivers, working order - 190,850 lbs. Weight on front truck, working order - 43,700 lbs. Weight on back truck, working order - 38,750 lbs. Total weight of eng. wworking order - 273,300 lbs.  Total weight of tender loaded - 200,300 lbs. Total weight of eng. and tender loaded - 473,600 lbs.  Cylinders - 22"x30" Tractive power (85% boiler press.) 43,100 lbs. Factor of adhesion - 4.4 Maximum width overall - 10'-10" Fuel - Bituminous coal Brick arch - American Security Thermic syphons - 2 Boiler Press. - 220 lbs. Length of firebox inside - 115 1/8" Width of firebox inside - 78 1/8" Grate area - 62.5 Sq. Ft. Size  of boiler tubes - 2" x 18'-6" Number of boiler tubes - 181 Size of superheater flues - 5 3/8" x 18'-6" Number of superheater flues - 32 Total heating surface - 2870 Sq. Ft. Superheater - 706 Sq. Ft. Superheater - Type "A" Stoker - Simplex Type "B.K." Low water alarm - Barco Type F-3A Valve gear - Baker Power reverse gear - Franklin type "E" Air pump 8 1/2" cross compound Department of the Interior The Alaska Railroad Office of Supt. M.P.&E.   Anchorage, Alaska