Results 101 to 110 of about 10,633 (207)
A methodology for the environmental assessment of advanced coal extraction systems [PDF]
Procedures developed to identify and assess potential environment impacts of advanced mining technology as it moves from a generic concept to a more systems definition are described.
Evensizer, J. +3 more
core +1 more source
A bibliography of tasmanite with an introduction and annotations [PDF]
, 1974 Since the discovery of tasmanite in 1851, scientific interest in this oil shale has shown much variation. The recent resurgence of research activity on tasmanite has been occasioned by the availability of new techniques which now permit the organic ...
Cane, RF
core +2 more sources
EnergiesUpper protective layer (UPL) mining is extensively utilised as a pressure relief strategy to prevent outbursts and coal bursts. However, when the excavation height of the protected layer is substantial, the depressurisation efficacy of the protective ...
Yanjiang Chai +5 more
doaj +1 more source
Sheet SK 00 SW and SK 00 SE ALDRIDGE - BROWNHILLS : part of 1:50 000 Sheet 154 (Lichfield) [PDF]
, 1984 This report embodies some of the results of a study commissioned by the Department of the Environment in 1983 to provide a geological information base, to enable informed consideration to be given to development proposals for the Aldridge - Brownhills ...
Langford, R.L. +3 more
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Failure characteristics of extra-thick coal seam under goaf based on double yield model
Meikuang Anquan, 2022 This paper aims to study the influence of the goaf in the upper coal seam on the overlying ultra-thick coal seam and determine the dislocation distance in the roadway layout of the lower coal seam. Based on finite difference method, this research, takig Tashan Coal Mine as the engineering background, established Mohr-Coulomb and double yield ...
XUE Jisheng, ZHAO Tielin, PAN Liming
openaire +1 more source
Technical terms in fishing gear materials and gear fabrication [PDF]
, 1964 Papers dealing with technical terms in fisheries science are few. This paper however, covers only one or two aspects of the subject, namely fishing gear materials and fishing gear fabrication. Similar papers on other aspects are also planned.
Eapen, P.K.
core
Energy Science & Engineering, 2020 The coal production exploited from extra‐thick coal seams accounts for 45% of China's total coal production. With large coal output, the extra‐thick coal seams require that the chamber section be more than 100 m2.
Yang Tai, Hongchun Xia, Tiejun Kuang
doaj +1 more source
Case studies and analysis of mine shafts incidents in Europe [PDF]
, 2012 International audienceEntry to mine workings is normally gained by means of vertical shafts or horizontal or inclined tunnels called adits. Other mining objects such as fan drifts and wheel pits are often associated with mine shafts.
Bock, Slawomir +9 more
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Advances in Civil EngineeringTo address the challenges of surrounding rock control caused by complex stress sources and intense ground pressure in gob-side entry driving (GED) with narrow coal pillars under extra-thick coal seams, this study takes the 10 m-thick coal seam 8204 panel
Dongjie Jiang +5 more
doaj +1 more source
Effective use of study-team review techniques in fifth and sixth grade social studies. [PDF]
, 1959 Thesis (Ed.M.)--Boston ...
Buddington, Winton Harlow +1 more
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