Surface mine reclamation plantings established in Pennsylvania from 1919 to 1934 were evaluated to determine merchantable volume, presence and volume of volunteer species, and soil development since planting. The evaluation showed that planted conifers had a total volume of 744 M bm on the 150 acres of reclaimed surface mines. In addition, there were 356 M bm of volunteer hardwood species on the area. Examination of soil profiles showed development of distinct soil horizons in all the plantations.
Davidson, Walter H. 1981. Timber volumes of old Pennsylvania surface mine reclamation plantations. Research Note NE-303. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 5 p.