Results 131 to 140 of about 346,667 (337)
Assessment of practicality of remote sensing techniques for a study of the effects of strip mining in Alabama [PDF]
Because of the volume of coal produced by strip mining, the proximity of mining operations, and the diversity of mining methods (e.g. contour stripping, area stripping, multiple seam stripping, and augering, as well as underground mining), the Warrior ...
Dillion, A. C., III +4 more
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Suitability Study of Surface Miner in Indian Coal Mines [PDF]
, 2013 Earlier opencast coal mining activities were done or being carried out only by conventional system of mining which includes drilling, blasting and crushing.
Sahoo, Abhijit
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MODERN IMPROVEMENTS IN COAL-MINING: WINDING FROM DEEP MINES. SECOND METROPOLITAN ENGINEERING CONFERENCE, 8 JUNE 1899. NOTES INTRODUCING SUBJECTS FOR DISCUSSION. SECTION IV - MINING & METALLURGY. [PDF]
, 1899 H Martin
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Eos, Transactions American Geophysical Union, 2009 The U.S. Department of the Interior (DOI) announced on 18 November measures to strengthen the oversight of state surface coal mining programs and to promulgate federal regulations to protect streams affected by surface coal mining operations. DOI's Office of Surface Mining Reclamation and Enforcement (OSM) is publishing an advance notice of a proposed ...
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Deep Underground Science and Engineering, EarlyView.The evolution of electrical conductivity, mineral composition, and tensile behavior such as peak strength, average stiffness, and the energy evolution of the granite specimen under different HCl conditions are studied, analyzed as well as quantified, and investigated, respectively.
Yanan Gao +5 more
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Meitan kexue jishuIn response to the challenging problem of deformation and failure of surrounding rock and support structures in roadways under rock burst, a comprehensive research approach involving numerical calculations, field measurements, and laboratory experiments ...
Yongzheng WU +4 more
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Deep Underground Science and Engineering, EarlyView.Based on acoustic emission response characteristics, it can be more accurate to identify the damage evolution process of coal under the combined dynamic and static loads, reveal the moment corresponding to coal damage, and identify the characteristics of coal failure. The research results are conducive to the further use of acoustic emission monitoring
Wei Zhang +10 more
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Cartels, managerial incentives, and productive efficiency in German coal mining, 1881-1913 [PDF]
In this paper, we evaluate the impact of cartelisation and managerial incentives on the productive efficiency of German coal mining corporations. We focus on coal mining in the Ruhr district, Germany’s main mining area.
Carsten Burhop, Thorsten Luebbers
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THE CONCEPTUAL FOUNDATION OF HARMONIZATION OF DIMENSIONAL DESIGN SOLUTION WHILE PLANNING AND WORKING OUT OF COAL-GAS DEPOSITS BY UNDERGROUND METHODS [PDF]
, 2018 Following the 25th World Mining Congress in Astana, it is concluded how important the coal mining industry nowadays. There are only a few energy sources that can produce heat and electricity day-and-night. Each source of energy has its own
LAPKO, Victor +4 more
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Relation of Coal-Dust to Explosions in Coal-Mines [PDF]
Nature, 1886 IT is a stubborn and grievous fact that the loss of life by explosions in coal-mines has risen in the last decade, although the number of explosions has fallen. This points clearly to some essential defect in the remedies adopted. The remedies in use apply apparently to one class of explosions only, hence the decrease in the number of explosions.
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