Brown Paper Company 2-6-2 "Prairie" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 15488)

Data from DeGolyer Library of Southern Methodist University Baldwin Specifications, Vol 80, pp. 188+. See also "

Administration building at Brown Paper Mill in West Monroe Louisiana" in the Louisiana digital library at and Workers on the Federal Writers Project, Louisiana; a Guide to the State (Baton Rouge, La: Lousiana Library Commission, 1941), p. 484. Works number was 60295 in December 1927.

A standard logging Prairie from Baldwin differing from several others only in the use of oil fuel. One odd cosmetic note: the stack was to be "shortened to line up with dome and sand box."

The mill it served in West Monroe, La was "vast" according to one source, but not very well placed as it turned out. The great flood of 1927 inundated the complex; five years later in 1932, the facility was submerged again. Yet it survived and a 1940 photograph (archived in the Louisiana digital library) shows the administration building to be a long, low, gracefully styled building.

The Louisiana guide described the Brown complex in 1941as "one of the largest sulphate pulp, board, and paper mills in the world." The guide credited the company with a "complete reforestation department, planting thousands of pines every year." The employees and their families could swim in the pool and conduct "community activities" in the "spacious" gymnasium.

Brown would later be prized by Olin-Matheson for its output of brown paper bags and corrugated cardboard and was bought in 1955.

Specifications by Steve Llanso of Sweat House Media
Locobase ID15488
RailroadBrown Paper Company
Number in Class1
Road Numbers3
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase9'
Engine Wheelbase24.50'
Ratio of driving wheelbase to overall engine wheebase 0.37
Overall Wheelbase (engine & tender)42.43'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers82000 lbs
Engine Weight104000 lbs
Tender Light Weight71000 lbs
Total Engine and Tender Weight175000 lbs
Tender Water Capacity4000 gals
Tender Fuel Capacity (oil/coal)1800 gals
Minimum weight of rail (calculated)46 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter46"
Boiler Pressure180 psi
Cylinders (dia x stroke)16" x 24"
Tractive Effort20435 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.01
Heating Ability
Firebox Area83 sq. ft
Grate Area16.20 sq. ft
Evaporative Heating Surface1529 sq. ft
Superheating Surface
Combined Heating Surface1529 sq. ft
Evaporative Heating Surface/Cylinder Volume273.77
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2916
Same as above plus superheater percentage2916
Same as above but substitute firebox area for grate area14940
Power L14803
Power MT387.39

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