Download or read book Geologic Features Related to Coal Mine Roof Falls written by Robert C. Milici and published by . This book was released on 1985 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guide to Geologic Features Affecting Coal Mine Roof written by Robert Lee Stahl and published by . This book was released on 1979 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geologic Factors in Coal Mine Roof Stability written by Noel N. Moebs and published by . This book was released on 1984 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Guide to Geologic Features in Coal Mines in the Northern Appalachian Coal Basin written by P. W. Jeran and published by . This book was released on 1983 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Relation of Geology to Mine Roof Conditions in the Pocahontas No 3 Coalbed written by Noel N. Moebs and published by . This book was released on 1982 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geologic Hazards and Roof Stability in Coal Mines written by Gregory M. Molinda and published by . This book was released on 2003 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Features that Contribute to Ground Control Problems in Underground Coal Mines written by V. R. Shea-Albin and published by . This book was released on 1993 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Predicting Probable Roof Fall Areas in Advance of Mining by Geological Analysis written by William K. Overbey and published by . This book was released on 1973 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Engineering Geologic Factors Controlling Coal Mine Subsidence in Utah and Colorado written by C. Richard Dunrud and published by . This book was released on 1976 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: A discussion of the processes of subsidence and their effects on mine safety, coal resource management, and the environment in two geologic setting.
Download or read book Correlation of LANDSAT and Air Photo Linears with Roof Control Problems and Geologic Features written by Jacqueline H. Jansky and published by . This book was released on 1983 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mine Safety and Health Administration (MSHA), U.S. Department of Labor, did a linear analysis for a new underground coal mine in Grant County, WV, through the interpretation of LANDSAT imagery and high-altitude, color-infrared aerial photography, to identify areas of potentially unstable roof in advance of mining. The Bureau of Mines included this mine in its ongoing study of the correlation between geologic features and linears. Three years after the analysis, after mining had progressed through the plotted linears, a cooperative Bureau-MSHA study evaluated the effectiveness of the linear plot in predicting areas of unstable roof and defined the geology associated with the linears. Adverse roof conditions at this mine include roof falls, potted-out roof, water inflow, and local areas requiring supplemental support. At the time of this study, 34 pct of the mine workings were within 200 ft of a plotted linear. Fifty percent of the adverse roof area in the mine occurred within this area. The primary geologic anomaly associated with the linears is an increased frequency of jointing. The majority of the plotted linears coincide with the prominent joint orientations. Additional features observed in the linear zones include roof rolls and a sandstone channel that cuts into the coal seam.
Download or read book Geologic Factors in Predicting Coal Mine Roof rock Stability in the Upper Kittanning Coalbed Somerset County Pa written by and published by . This book was released on 1981 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geologic Investigations of Underground Coal Mining Problems written by Charles M. McCulloch and published by . This book was released on 1975 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Informational Report Mine Safety and Health Administration written by United States. Mine Safety and Health Administration and published by . This book was released on 1979 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Determination of Geologic Features Associated with Linears written by Jacqueline H. Jansky and published by . This book was released on 1982 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Informational Report written by and published by . This book was released on 1978 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coal Mine Roof Rating CMRR written by Gregory M. Molinda and published by . This book was released on 1994 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Information Circular written by and published by . This book was released on 1984 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
