The main purpose of Mining the Earth's Heat: Hot Dry Rock Geothermal
Energy is to preserve the concepts and data developed during the last 35
years, so that a new generation can build upon our efforts. Integrated
into this one book is all known data available on HDR development and
resources of the U.S. The book also includes relevant information on HDR
projects outside of the U.S. The material is presented in a format
easily grasped by any engineer, scientist, or educates layman.