This is a common and important pine of the Rocky Mountains where it is much used for railroad cross-ties and mine timbers. It is also found in the Sierra Nevada region of California usually at elevations of over 6000'. In the Rockies it is a small tree and grows in dense stands, but in California it reaches its greatest size, 2-3' in diameter and 100 ft. high, occasionally reaching greater size. In California the tree is also known as Tamarac pine, but logging operations seldom reach commercial stands of this species. The wood is light and soft and must be cresoted to serve well as ties and mine props.

Location: 133-2 (explanation)