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Titlebook: Geological Methods in Mineral Exploration and Mining; Roger Marjoribanks Book 2010Latest edition Springer-Verlag Berlin Heidelberg 2010 Fu

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21#
發(fā)表于 2025-3-25 06:24:12 | 只看該作者
András K?r?sényi,Gábor G. Fodorpercussion or hammer action in conjunction with a chisel bit can be used to penetrate hard material. High-pressure air pumped to the face of the bit down the centre of the rods serves to lubricate the cutting surfaces and to remove the broken rock (cuttings) by blowing it to the surface. The cutting
22#
發(fā)表于 2025-3-25 08:49:59 | 只看該作者
23#
發(fā)表于 2025-3-25 15:08:33 | 只看該作者
https://doi.org/10.1007/978-3-531-18822-5” exploration areas), the explorationist increasingly has to make use of geophysical and geochemical methods in order to extend the search into areas of shallow cover inaccessible to more traditional prospecting. Some of these geophysical and geochemical methods also allow for rapid regional apprais
24#
發(fā)表于 2025-3-25 17:57:03 | 只看該作者
https://doi.org/10.1007/978-3-658-38708-2n distribution across the surface of the ground, and hence can be presented as a map or section. Data of this sort are fundamental to all phases of mineral exploration. Any map is an example of a Geographical Information System – commonly known by its acronym GIS. However, today GIS is more specific
25#
發(fā)表于 2025-3-25 23:36:14 | 只看該作者
András K?r?sényi,Gábor G. Fodors consist of broken, disoriented rock fragments ranging in size from silt (“rock flour”) to chips up to 3?cm diameter. In standard rotary percussion drilling, the broken rock reaches the surface along the narrow space between the drill rods and the side of the hole.
26#
發(fā)表于 2025-3-26 02:44:31 | 只看該作者
27#
發(fā)表于 2025-3-26 06:18:38 | 只看該作者
Book 2010Latest editionexploration project. Hints and tips are give. The steps are illustrated with numerous examples drawn from real projects on which the author has worked. The book emphasizes traditional skills and shows how they can be combined effectively with modern technological approaches.
28#
發(fā)表于 2025-3-26 09:21:04 | 只看該作者
Book 2010Latest editiontallic deposits. The techniques described are fundamental to the collection, storage and presentation of geological data and their use to locate ore. This book explains the various tasks which the exploration geologist is asked to perform in the sequence in which they might be employed in an actual
29#
發(fā)表于 2025-3-26 14:34:33 | 只看該作者
industry professional in clear, readable style.Includes suppThis practical step-by-step guide describes the key geological field techniques needed by today‘s exploration geologists involved in the search for metallic deposits. The techniques described are fundamental to the collection, storage and p
30#
發(fā)表于 2025-3-26 19:50:52 | 只看該作者
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