Download or read book Mining Methods at the Campbell Mine of the Calumet Arizona Mining Co Warren Ariz written by H. M. Lavender and published by . This book was released on 1930 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describing the inclined cut-and-fill, and the semishrinkage methods of mining at the Campbell mine of the Calumet and Arizona Mining Co. at Warren, Ariz., is one of a series being prepared by the United States Bureau of fines on mining methods, practices and costs in the various mining districts in the United States. The major portion of the production from the Bisbee mines of the company is mined by these methods. The total average yearly production for the last two years has been 493,612 tons of 5 per cent copper ore. The average employment in the mining department eras 940 men. With the exception of a small tonnage mined for the high iron and sulphur content, the ore is direct-smelting and is mined for its copper conntent and associated gold and silver values.
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 Mining Methods at the Eighty five Mine written by Ralph B. Youtz and published by . This book was released on 1931 with total page 64 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 Information Circular written by and published by . This book was released on 1931 with total page 1082 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tabular Index of Bureau of Mines Information Circulars on Mining and Milling Methods written by John Roy Thoenen and published by . This book was released on 1935 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mineral Resources of the United States written by United States. Bureau of Mines and published by . This book was released on 1932 with total page 1112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Minerals Yearbook written by and published by . This book was released on 1932 with total page 1114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 1938 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stoping Methods and Cost written by Charles Freeman Jackson and published by . This book was released on 1937 with total page 306 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 1935 with total page 1442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mining Petroleum by Underground Methods written by Carl Ernest Reistle and published by . This book was released on 1932 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mining Methods and Costs at Metal Mines of the United States written by Charles Will Wright and published by . This book was released on 1931 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Work of the United States Bureau of Mines written by United States. Bureau of Mines and published by . This book was released on 1930 with total page 1254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Techology Employment and Output Per Man in Copper Mining written by United States. Work Projects Administration and published by . This book was released on 1940 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technology Employment and Output Per Man in Copper Mining written by Yau Sing Leong and published by . This book was released on 1940 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mineral Technology and Output Per Man Studies written by and published by . This book was released on 1937 with total page 1306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
