Download or read book Iron Mining Methods and Costs Greenwood Mine Ishpeming Michigan written by United States. Bureau of Mines and published by . This book was released on 1960 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Iron Mining Methods and Costs Greenwood Mine Ishpeming Mich written by R. C. Annear and published by . This book was released on 1960 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Iron Mining Methods and Costs Greenwood Mine Ishpeming Mich written by R. C. Annear and published by . This book was released on 1960 with total page 36 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 1960 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Investment and Operating Costs for Chemical and Petroleum Plants written by United States. Bureau of Mines and published by . This book was released on 1930 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Investment and Operating Costs for Chemical and Petroleum Plants January December 1960 written by Sidney Katell and published by . This book was released on 1961 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Statistics Covering Costs and Production of Michigan Iron Mines written by and published by . This book was released on 1951 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mining Practices Methods and Costs at Mine No 4 of the Marquette Range Michigan written by W. W. Graff and published by . This book was released on 1930 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mining Practices Methods and Costs at Mine No 4 of the Marquette Range Michigan written by United States. Bureau of Mines and published by . This book was released on 1930 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Saga of Iron Mining in Michigan s Upper Peninsula written by Burton H. Boyum and published by . This book was released on 1983 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Open pit Iron Mining Milling and Costs Groveland Mine the Hanna Mining Co Dickinson County Mich written by Leonard F. Heising and published by . This book was released on 1963 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mining and Milling Methods and Costs Ozark Ore Co Iron Mountain Iron Ore Mine St Francois County Mo written by Robert F. Pettit and published by . This book was released on 1957 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mining Practices Methods and Costs at Mine No 5 of the Marquette Range Michigan written by United States. Bureau of Mines and published by . This book was released on 1930 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book IMM Abstracts written by Institution of Mining and Metallurgy (Great Britain) and published by . This book was released on 1960 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Appraisal of Mining Properties of Michigan written by James Ralph Finlay and published by . This book was released on 1911 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mining and Engineering Methods and Costs of the Hanover Bessemer Iron Copper Co Fierro N Mexico written by Lloyd M. Kniffin and published by . This book was released on 1930 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper is one of series being prepared by the United States Bureau of Mines on mining methods, practices, and costs in the various mining districts of the United States. It describes the mine of the Hanover Bessemer Iron & Copper Co. at Fierro, Grant County, N.M., which is the only operating iron mine in the southwestern part of the United States. This mine is in a district noted for the great variety of ores that it produces. Within a small area, as shown is Figure 1, there are noteworthy deposits of nearly all the common metals. The ore occurs in lenticular masses dipping at about 50°. An underhand stoping method has been developed that requires but a very small amount of handling of ore. As the ore is very irregular in iron content and also in the distribution of the impurities--chiefly sulphur, silica, and magnesia--a method has to be used that will permit selective mining and will also allow ore and waste to be taken out separately as conditions change. A magnetic cobbing plant raises the grade of the ore shipped about 10 per cent. Nealy all of the iron ore is shipped to Pueble, Colo., a distance of 694 miles, where it is smelted by the Colorado Fuel & Iron Co. The mine is not a large producer, as the long distance from blast furnaces limits its output. In recent years the annual shipments have amounted to about 200,000 tons. The property is noteworthy chiefly on account of this long transportation by rail and the economical methods that have been developed to make the operation profitable. About 175 men are employed.
Download or read book Recent Developments in Methods of Mining in the Michigan Iron Mines and Timbering Practice in the Michigan Iron Mines written by Roland Dane Parks and published by . This book was released on 1929 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
