Results 81 to 90 of about 13,666 (200)
THE NIGERIAN COAL CORPORATION: AN EVALUATION OF PRODUCTION PERFORMANCE(1960 1987) [PDF]
COAL WAS DISCOVERED IN NIGERIA IN 1909 AND COAL MINING STARTED WITH A DRIFT MINE AT OGBETE, ENUGU IN 1915. SINCE 1958/59, WHEN COAL PRODUCTION REACHED ITS PEAK, THERE HAS BEEN A PERSISTENT FLUCTUATION IN THE AMOUNT OF COAL PRODUCED IN SUBSEQUENT YEARS ...
DR. GODWIN CHUKWUDUM NWAOBI
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Forage Research Report, No. 2 [PDF]
, 1964 Cooperating with the Agricultural Research Service, U.S.
Klebesadel, L.J., Laughlin, W.M.
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Technology and The North American Forest [PDF]
, 1992 Cet propose une revue de la littérature concernant l’adoption en Amérique du nord, au cours des 19e et 20e siècle, de technologies forestières européennes. On discutera surtout du traitement des billes de bois, des technologies touchant les moulin à scie
Brown, Marian K.
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Gong-kuang zidonghua, 2016 In view of problems of bad image effect of video monitoring and control in process of automation production on fully-mechanized coal mining face, a monitoring and control system based on virtual reality technology was designed, and function design ...
LI Hao +3 more
doaj +1 more source
Reversal of fortune in a small, open economy: regional GDP in Belgium, 1896-2000. [PDF]
In this paper we present estimates of regional GDP per capita for certain benchmark years during the first half of the 20th century using the method proposed by Geary and Stark (2002).
Buyst, Erik
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UWB linkage locking technology and application design for mine faces
Meikuang AnquanThis article conducts a comprehensive study and analysis of ultra wideband wireless carrier communication technology (UWB) and two positioning algorithms of TDOA and TOF.
Baojiang REN
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Mining nonterrestrial resources: Information needs and research topics [PDF]
An outline of topics we need to understand better in order to apply mining technology to a nonterrestrial environment is presented. The proposed list is not intended to be complete.
Daemen, Jaak J. K.
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Simulation of rapid loading systems in iron ore mines [PDF]
, 2010 In the mining industry, it is observed that sudden break-down of any equipment may stop the entire system, resulting in drastic production losses and enhancing the cost production. In this paper, the probability of sudden break down of each equipment are
Sandeep, Manakeshwar, Sumeet , Verma
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Overall requirements for an advanced underground coal extraction system [PDF]
, 1980 Underground mining systems suitable for coal seams expoitable in the year 2000 are examined with particular relevance to the resources of Central Appalachia. Requirements for such systems may be summarized as follows: (1) production cost; (2)miner safety;
Goldsmith, M., Lavin, M. L.
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Research and exploration of longwall fully mechanized mining in steeply dipping coal seams
Meitan kexue jishuTo address the challenges of safe and efficient mining in steeply dipping coal seams in China and support the intelligent transformation of the coal industry, this article focuses on fully mechanized longwall mining technology for such seams.
Yongping WU +10 more
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