Duluth,Missabe, And Iron Range, Class "S-7", 0-10-2 #607

Originally #307 of Union RR. Built by Baldwin, 1937, C/N 62060. .

Union RR. was a United States Steel company RR. operating in the Pittsburgh area. When Union Dieselized the ten 0-10-2's were transferred to the D.M.& I.R. where they were renumbered in the 600 series. Number 307 was renumbered #607, Class S-7 by D.M.& I.R., 1949. Although built with boosters on the front tender truck, they were all later removed. # 603 was returned to the Union RR. for display in 1961.

Series....................................601-610

Cylinders, Dia. & Stroke=.......... 28" x 32" Wt. on Trailing Truck.................60,430 lb.

Driving wheel Diameter =...................61" Wt. on Drivers =.....................343,930 lb.

Boiler Pressure,..........................260 lb. Wt. of total Engine =................404,360 lb.

Grate Area =..........................85.2 sq. ft. Tender Wt., Loaded................ 240,000 lb.

Evaporative Htg. Surface =.......4808.2 sq. ft. Tender capacity, Coal =................14 tons.

Superheater surface,(Type "A")..... 1389 sq. ft. Tender capacity, Water = .........12,000 gal.

Rigid wheel base = .........................16'-6". Tractive force =.....................96,700 lb.

Driving wheel base = ......................22'-0". Tractive force, with booster =.....108,050 lb.

Engine wheel base = ........................32'-0" Factor of Adhesion =................... 3.55667

Wheel base, Eng/Tend.=................67'-3,1/2" Wt on Drivers/ engine wt.=......... .85.055%

Union #301-309, Baldwin 1936-37 C/N.= #61907-11, #62059-62 = DM&IR class S-7 #601-609

Sold for scrap,1958