Download or read book The Conrey Placer Mining Company written by Clark C. Spence and published by . This book was released on 1989 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: This historic mining company experimented with massive equipment and innovative techniques to dig millions of dollars in gold out of Alder Gulch.

Download or read book The History and Development of Gold Dredging in Montana written by Hennen Jennings and published by . This book was released on 1916 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Placer mining Methods and Costs in Alaska written by Norman L. Wimmler and published by . This book was released on 1927 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A History of Gold Dredging in Idaho written by Clark C. Spence and published by University Press of Colorado. This book was released on 2015-06-15 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: A History of Gold Dredging in Idaho tells the story of a revolution in placer mining—and its subsequent impact on the state of Idaho—from its inception in the early 1880s until its demise in the early 1960s. Idaho was the nation’s fourth-leading producer of dredged gold after 1910 and therefore provides an excellent lens through which to observe the practice and history of gold dredging. Author Clark Spence focuses on the two most important types of dredges in the state—the bucket-line dredge and the dragline dredge—and describes their financing, operation, problems, and effect on the state and environment. These dredges made it possible to work ground previously deemed untouchable because bedrock where gold collected could now be reached. But they were also highly destructive to the environment. As these huge machines floated along, they dumped debris that harmed the streams and destroyed wildlife habitat, eventually prompting state regulations and federal restoration of some of the state’s crippled waterways. Providing a record of Idaho’s dredging history for the first time, this book is a significant contribution to the knowledge and understanding of Western mining, its technology, and its overall development as a major industry of the twentieth century.

Download or read book Organization of the New York and El Dorado Gold Mining Company of the State of New York written by New York and Eldorado Gold Mining Company and published by . This book was released on 1865 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Placer Mining written by Colliery Engineer Company (Scranton, Pa.) and published by . This book was released on 1897 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Placer Mining written by and published by . This book was released on 1895 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by and published by . This book was released on 1918 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gold Placers of California written by Charles Scott Haley and published by . This book was released on 1923 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mineral Resources of the United States written by and published by . This book was released on 1927 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Analytical Distillation of Petroleum written by Walter Frank Rittman and published by . This book was released on 1916 with total page 998 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 1916 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by California. Division of Mines and published by . This book was released on 1910 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by California State Mining Bureau and published by . This book was released on 1910 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Mineral Industry written by and published by . This book was released on 1911 with total page 928 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 1907 with total page 1324 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Mineral Industry Its Statistics Technology and Trade written by Richard Pennefather Rothwell and published by . This book was released on 1907 with total page 1004 pages. Available in PDF, EPUB and Kindle. Book excerpt: