Download or read book Methods and Costs of Mining Quicksilver Ore at the New Idria Mine San Benito County Calif written by W. R. Moorehead and published by . This book was released on 1931 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Methods and Costs of Mining Quicksilver Ore at the New Idria Mine San Benito County Calif written by United States. Bureau of Mines and published by . This book was released on 1931 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Methods and Costs of Mining Quicksilver Ore at the New Idria Mine San Benito County Calif written by W. R. Moorehead and published by . This book was released on 1931 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Methods and Costs of Mining Quicksilver Ore at the New Idria Mine San Benito County California written by United States. Bureau of Mines and published by . This book was released on 1931 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sampling and Estimation of Ore Deposits written by Charles Freeman Jackson and published by . This book was released on 1934 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of Simon Coles Manganese Deposit Bedford County Pa written by W. H. Kerns and published by . This book was released on 1948 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biennial Report of the Regents of the University of Nevada and the Report of the President written by University of Nevada and published by . This book was released on 1915 with total page 1330 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report of Investigations no 2002 to No 7380 written by and published by . This book was released on 1956 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report of Investigations written by and published by . This book was released on 1956 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by and published by . This book was released on 1932 with total page 184 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 1937 with total page 946 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Square set System of Mining written by Eugene Delos Gardner and published by . This book was released on 1933 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of Selected Rock Excavations as Related to Large Nuclear Craters written by and published by . This book was released on 1967 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analogies between nuclear and conventional excavations are developed from a tabulation of data from 153 mine, quarry, roadway, and dam excavations. The following factors were used as the basis for tabulation of conventional excavation data: purpose, location, precipitation, temperature, ground water level, lithology, mass strength, structural pattern, slope plan, slope profile, depth of excavation, slope height, average inclination, and stability. It was found that average slope inclination tends to be greatest for hard material and for material lacking a well-developed structure, and that inclination tends to de- crease with increasing slope height for excavated slopes reported to be stable. The authors conclude that good analogies are to be found in shape, slope height, depth of excavation, and slope inclination. Loadings of waste material at the rim of some open pit mines may be analogous to ejecta on the lips of nuclear craters. Rubble zones found in some open pit mines may be analogous to the fallback zones of nuclear craters. Differences between preshot and postshot characteristics of cratered media must be appreciated in evaluating analogies between features of conventional excavations and preshot features of nuclear excavation sites. Brief descriptions of 21 selected excavations are presented in Appendix A. The results of this study serve as an aid to judgment of nuclear crater slope stability. Potential subjects for further study are identified.

Download or read book Metal mining Practice written by Charles Freeman Jackson and published by . This book was released on 1939 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of Sand and Gravel Deposits written by John Roy Thoenen and published by . This book was released on 1933 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by United States. Bureau of Mines and published by . This book was released on 1939 with total page 1292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Milling Methods at the Concentrator of the Walker Mining Co Walkermine Calif written by M. R. McKenzie and published by . This book was released on 1932 with total page 1336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describing the milling methods at the Walkermine concentrator, Plumas County, Calif., is one of a series being prepared by the United States Bureau of Mines on milling methods and costs in the various mining districts throughout the United States