Guidelines for mining under surface water. Phase III and final report.
Denver, CO: U.S. Department of the Interior, Bureau of Mines, 1976 Jan; :1-67
The purpose of this study is to formulate practical guidelines for active underground mining in close proximity to water bodies. This was accomplished through systematic completion of three phases of study: (I) collection and documentation of data, (II) application of existing guidelines to case histories of previous inundations, and (III) development of recommended guidelines for underground coal mining near bodies of water. Drawing on the broad data base established in previous study efforts, Phase III was directed at development of viable guidelines to promote the greatest possible coal extraction while precluding accidental mine inundation. The guidelines established relate to mining beneath surface waters by total extraction, by room and pillar, by panel mining, and by a combination of these methods. The minimum rock cover necessary for mining to be allowed is specified. Safety zones beneath surface water bodies and structures impounding water are defined.
CP; Final Contract Report
NTIS Accession No.
Denver, CO: U.S. Department of the Interior, Bureau of Mines