Environmental Assessment of Surface Mining Methods Head-of-Hollow Fill and Mountaintop Removal. Volume 2

摘要

As a portion of the EPA study 'Environmental Assessment of Head-of-Hollow Fill and Mountaintop Removal Mining,' this volume documents the evaluation of the long-term stability of four head-of-hollow fills. Three phases of work included in the endeavor are: collection of samples of valley fill material at several locations; determination of sample moisture content, density and shear strength; and application of these parameters to stability analysis, analysis of water carrying capacity of rock chimney drains, and evaluation of the reliability and effectiveness of remote data collection techniques.