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Blast Hole Diamond Drilling In California Mines
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Book Synopsis Blast-hole Diamond Drilling in California Mines by : D. W. Butner
Download or read book Blast-hole Diamond Drilling in California Mines written by D. W. Butner and published by . This book was released on 1948 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The blast-hole method for drilling and breaking ground is not new to the mining industry. For several years it has been used rather extensively in Canada, particularly in the gold mines, where it was first developed and where the major advances in the technique as applied to present-day mining problems have been made. At present, 40 mines in Canada and the United States are using the method in one form or another, and from all indications its use will increase in the future. In two California mines, blast-hole diamond drilling is now used for a part of or for all stoping operations, and in one of these it is used to some extent in development work. At the Mountain Copper Co.'s Hornet mine in Shasta County, about 50 percent of the pyritic sulfide ore produced is mined by the blast-hole method, and the U.S. Vandaium Corp. mines 8- percent of the ore produced at its Pine Creek Tungsten mine in Inyo County by this method. At Pine Creek, long-hole drilling and blasting is used for mining pillars also, and in pre-stopping development. The blast-hole diamond-drilling method is not applicable to all types of ore bodies. A third property in California, the El Dorado Limestone Company, El Dorado County tried the method for several months in 1943 and 1944, but, owing to certain factors that greatly increased mining cost, the company soon returned to conventional mining methods. After using blast-hole methods for several years, the management at both the Hornet and Pine Creek mines have decided that the advantages the method has over conventional mining methods more than offset the additional expense involved in the necessary experimental work. The advantages such as safer working conditions for the miner, increased tonnage per man shift, and a steadier production rate are major factors in the decision to continue use of blast-hole diamond drilling at these properties.
Book Synopsis Diamond-drilling Blast Holes, Eastern Magnetite Mine A by : McHenry Mosier
Download or read book Diamond-drilling Blast Holes, Eastern Magnetite Mine A written by McHenry Mosier and published by . This book was released on 1946 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Diamond Drilling Blast Holes, Balmat Mine, St. Lawrence County, N.Y. by : McHenry Mosier
Download or read book Diamond Drilling Blast Holes, Balmat Mine, St. Lawrence County, N.Y. written by McHenry Mosier and published by . This book was released on 1947 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Diamond-drilling Blast Holes, Eastern Magnetite Mine B by : McHenry Mosier
Download or read book Diamond-drilling Blast Holes, Eastern Magnetite Mine B written by McHenry Mosier and published by . This book was released on 1947 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Diamond-drilling Blast Holes, Bellefonte Mine, National Gypsum Co., Centre County, Pa by : McHenry Mosier
Download or read book Diamond-drilling Blast Holes, Bellefonte Mine, National Gypsum Co., Centre County, Pa written by McHenry Mosier and published by . This book was released on 1948 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Diamond-drilling Blast Holes, Eastern Magnetite Mine C by : McHenry Mosier
Download or read book Diamond-drilling Blast Holes, Eastern Magnetite Mine C written by McHenry Mosier and published by . This book was released on 1948 with total page 18 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 1947 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Miners' Circular written by and published by . This book was released on 1956 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Miners' Circular by : United States. Bureau of Mines
Download or read book Miners' Circular written by United States. Bureau of Mines and published by . This book was released on 1957 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis List of Publications, Bureau of Mines by : United States. Bureau of Mines
Download or read book List of Publications, Bureau of Mines written by United States. Bureau of Mines and published by . This book was released on 1960 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis List of Publications Issued by the Bureau of Mines, with Subject and Author Index by : United States. Bureau of Mines
Download or read book List of Publications Issued by the Bureau of Mines, with Subject and Author Index written by United States. Bureau of Mines and published by . This book was released on 1943 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis List of Bureau of Mines Publications and Articles ... with Subject and Author Index by : United States. Bureau of Mines
Download or read book List of Bureau of Mines Publications and Articles ... with Subject and Author Index written by United States. Bureau of Mines and published by . This book was released on 1987 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rotary Drilling and Blasting in Large Surface Mines by : Bhalchandra V. Gokhale
Download or read book Rotary Drilling and Blasting in Large Surface Mines written by Bhalchandra V. Gokhale and published by CRC Press. This book was released on 2010-12-14 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: In large surface mining operations, drilling and blasting activities constitute more than 15% of the total costs. In order to optimize performance and minimize costs, a thorough knowledge of drill and blast operations is, therefore, extremely important.In this unique reference volume, rotary blasthole drilling and surface blasting, as applied in la
Book Synopsis List of Publications Issued by the Bureau of Mines from July 1, 1910, to January 1, 1960 by : United States. Bureau of Mines
Download or read book List of Publications Issued by the Bureau of Mines from July 1, 1910, to January 1, 1960 written by United States. Bureau of Mines and published by . This book was released on 1960 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Mining Magazine written by and published by . This book was released on 1948 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis United States Government Publications Monthly Catalog by :
Download or read book United States Government Publications Monthly Catalog written by and published by . This book was released on 1948 with total page 1850 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rock Drilling written by C. E. Nighman and published by . This book was released on 1940 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt:
