THE AUTHORS 



EUGENE E. FARMER, forest hydrologist on the Mine Spoil Reclamation research work unit at Logan, 

 Utah, joined the staff of the Internnountain Forest and Range Experiment Station in 1 964. Since 

 1966 he has studied reclamation of lands mined for coal, copper, and phosphate. His primary 

 investigations are in surface and subsurface hydrology, revegetation, and waste dump mass 

 stability. 



BLAND Z. RICHARDSON, research foresteron the Mine Spoil and Reclamation research work unit at 

 Logan, Utah, joined the staff of the Intermountain Forest and Range Experiment Station in 1 962. 

 His research includes studies to determine the effect of multiple logging roads on moisture 

 regimen, the hydrologic and pedologic effect of grazing on rangelands, the infiltration and 

 erosional behavior of contour trenches on high elevation watersheds, and the effect of voids on the 

 accuracy of neutron moisture measurements. Since 1966 his research has been exclusively on 

 surface mine rehabilitation— conducting research on surface mine problems, testing research 

 results on demonstration areas, and applying these results in cooperation with other Federal and 

 State agencies as well as private industry. 



ACKNOWLEDGMENT 



The authors wish to thank the Idaho Mining Company, Salmon, Idaho, and the Hanna Mining 

 Company, Cleveland, Ohio, for drilling the access holes used in this study. Without that and other 

 assistance, this study would not have been possible. 



