in November 1913.
Grace Logging Company was the successor to the Gravel Lumber Company, which established a mill in Castor, a little town in the southwest corner of Bienville Parish in Louisiana and set up a tram road between Castor and Lucky. R F Chandler managed the mill, the town and the tram, known as the "Old Railroad Logging Tram". This Baldwin logging Prairie was standard equipment for many timber harvesters in the early 20th Century.
After a couple of decades of logging, according to Hamner, "The tall virgin pines disappeared as did the commissaries, logging camps, tramways, and local trains. The timber-logging boom was more or less over by 1920. Once beautiful woods were left with pitiful, naked stumps"
This typical denoument to much of American logging in the early 20th century hit Chandler as well and he left the area for the Black River. There he established a successful fishing camp in 1930 and ran it for another 2 decades.
One of dozens of Baldwin-built logging Prairies that worked in all parts of the United States, the 7 was of medium size with a relatively small grate for the boiler. Goodman (later Sawyer-Goodman) built a railroad near Marinette, Wisc that was still under construction when the 7 and the 14 were ordered and featured 7% grades on the "temporary work" and 4-5% on the mainline. Curves could be as tight as 28 degrees.
This long-stroke, wood-burning logging Prairie was one of several produced to this particular design. Once the Graves Brothers began de-emphasizing and ultimately ending their lumber construction, they disposed of their excess equipment.
The 9 went to WB Harbeson when that company bought the newly built electric sawmill at Carabelle in 1928. It later worked for West Florida Lumber Company and A M Lewin Lumber before winding up with Walsh Construction.
|Principal Dimensions by Steve Llanso of Sweat House Media|
|Railroad||Grace Logging Company||Goodman Lumber Company||Graves Lumber Company|
|Number in Class||1||1||1|
|Builder||Baldwin||Burnham, Williams & Co||Baldwin|
|Locomotive Length and Weight|
|Driver Wheelbase (ft / m)||10.25 / 3.12||10 / 3.05||9.17 / 2.80|
|Engine Wheelbase (ft / m)||26.83 / 8.18||25.25 / 7.70||23.75 / 7.24|
|Ratio of driving wheelbase to overall engine wheebase||0.38||0.40||0.39|
|Overall Wheelbase (engine & tender) (ft / m)||54.46 / 15.44||45.83 / 13.97||49.10 / 14.97|
|Axle Loading (Maximum Weight per Axle) (lbs / kg)|
|Weight on Drivers (lbs / kg)||89,000 / 39,644||78,000 / 35,380||70,000 / 31,752|
|Engine Weight (lbs / kg)||117,000 / 51,800||103,000 / 45,359||92,000 / 41,731|
|Tender Loaded Weight (lbs / kg)||90,000 / 40,823||60,000 / 27,216||70,000 / 31,752|
|Total Engine and Tender Weight (lbs / kg)||207,000 / 92,623||163,000 / 72,575||162,000 / 73,483|
|Tender Water Capacity (gals / ML)||4000 / 17.05||3000 / 11.36||4800 / 18.18|
|Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)||8 / 5.50|
|Minimum weight of rail (calculated) (lb/yd / kg/m)||49 / 24.50||43 / 21.50||39 / 19.50|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in / mm)||50 / 1118||46 / 1168||44 / 1118|
|Boiler Pressure (psi / kPa)||170 / 11.70||180 / 12.40||170 / 11.70|
|High Pressure Cylinders (dia x stroke) (in / mm)||17" x 24" / 432x610||16" x 24" / 406x610||15" x 24" / 381x610|
|Tractive Effort (lbs / kg)||20,045 / 9092.27||20,435 / 9269.17||17,734 / 8044.02|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.44||3.82||3.95|
|Firebox Area (sq ft / m2)||121 / 11.24||93.40 / 8.68||86 / 7.99|
|Grate Area (sq ft / m2)||18.20 / 1.69||14.40 / 1.34||14.10 / 1.31|
|Evaporative Heating Surface (sq ft / m2)||1552 / 144.18||1348 / 125.23||1074 / 99.78|
|Superheating Surface (sq ft / m2)|
|Combined Heating Surface (sq ft / m2)||1552 / 144.18||1348 / 125.23||1074 / 99.78|
|Evaporative Heating Surface/Cylinder Volume||246.15||241.36||218.79|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||3094||2592||2397|
|Same as above plus superheater percentage||3094||2592||2397|
|Same as above but substitute firebox area for grate area||20,570||16,812||14,620|