Earley's comments on the immense Calcasieu forest are worth repeating in part. He tells us that the stand of longleaf yellow pine bounded by the Sabine River on the west, the Calcasieu on the east, and the Red River on the north, covered 4,500 sq miles (and was so densely grown that harvests yielded 12,000 to 30,000 board feet per acre. The wood from these woods "became a trademark for all that lumber buyers wanted from longleaf lumber--strength, durability, and great size." (p. 243).
On p. 244, Earley describes the "deeper and more indelible scars" that remained from the decades of logging that cleared virtually the whole forest. The book describes the impact of 19th and 20th century logging on the 92 million acres (37,352,000 ha) (or 143,750 sq miles/372,614 sq km) of longleaf pine ecosystem that once stretched from Virginia to Texas.
One of the hundreds of locomotives supporting the intense extraction of timber was a superheated variant of a widely used Baldwin logging Prairie design whose saturated boiler had 200 tubes. With superheat came the use of piston valves to supply steam; these measured 9 1/2" (241 mm) in diameter.
The tube length given in the specs generates a low heating surface area compared to the heating surface areas stated in the specifications. Locobase notes that the heating surface area for the tubes alone calculates as 821 sq ft compared to the 930 sq ft shown. He's pretty sure the tube surface area is miscalculated in the specs. However, the next locomotive in Volume 65 gives the same values but shows a tube length two feet longer, which yields too high a tube heating surface. Adjusting the length to 15 feet (4.57 m) even brings the calculated and stated values close to each other.
The engine didn't remain with the CLLLCo (as the tender was lettered) for long. Its owner, Long Bell Lumber renumbered it 681 and relocated it to the Longview, Portland & Northern in Oregon in 1922. It later moved to Independence, Ore to work on the LP&N's Willamina & Grand Ronde. In 1953, Long Bell sent the engine south to work on the Mexicano del Pacifico as their 7.
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Calcasieu Long Leaf Lumber Company|
|Number in Class||1|
|Locomotive Length and Weight|
|Ratio of driving wheelbase to overall engine wheebase||0.38|
|Overall Wheelbase (engine & tender)||50.50'|
|Axle Loading (Maximum Weight per Axle)|
|Weight on Drivers||101000 lbs|
|Engine Weight||130000 lbs|
|Tender Light Weight||90000 lbs|
|Total Engine and Tender Weight||220000 lbs|
|Tender Water Capacity||4500 gals|
|Tender Fuel Capacity (oil/coal)||6 tons|
|Minimum weight of rail (calculated)||56 lb/yard|
|Geometry Relating to Tractive Effort|
|Boiler Pressure||200 psi|
|Cylinders (dia x stroke)||17" x 24"|
|Tractive Effort||25088 lbs|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.03|
|Firebox Area||104 sq. ft|
|Grate Area||18.70 sq. ft|
|Evaporative Heating Surface||1438 sq. ft|
|Superheating Surface||344 sq. ft|
|Combined Heating Surface||1782 sq. ft|
|Evaporative Heating Surface/Cylinder Volume||228.07|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||3740|
|Same as above plus superheater percentage||4451|
|Same as above but substitute firebox area for grate area||24752|