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mining method applicable to coal deposit in okaba

Determination of Airflow Distributions in Okaba Underground Coal ...

system of the Okaba Coal deposit requires 145 m3/s of air with a main ... Methods of Estimating Mine Airflow .... Chezy-Darcy Equation, applicable to circular and.

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Full Text - Journal of Mining World Express

Okaba Coal deposit for pillar support system in an underground ... RMR was used in the system of pillar dimension whose height is 2.6 ... Materials and Method.

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Journal of Engineering and Technology Modelling of Okaba ...

Jul 7, 2013 ... Modelling of Okaba Underground Coal Mine Ventilation System. 1J.M Akande ... CAD software (AutoCAD) was used in the complete design of the ... on the mining ventilation process, as 50 % of the energy consumed by ore...

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Coal Mine Methane Country Profiles, Chapter 24, June 2015

meter thick are: Ogboyoga (100 Mmt) in the north, and Okaba (70 Mmt), ... Table 24-3 provides an overview of coal mines and mining methods used in Nigeria.

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design of a haulage way in an underground coal mine - International ...

International Journal of Engineering and Applied Science. © 2012 - 2014 ... Keywords: Haulage way, underground coal mine, angle of dip, ... Access haulage ways or entries are the tunnels .... Ogboyoga (100 million tonnes), Okaba (70 million.

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Nigeria's coal potential grossly underperforms | - International Mining

Sep 23, 2014 ... The Nigeria coal industry has four closed non-operational mines of Okpara and Onyeama in Enugu State, Okaba surface mine in Kogi State...

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PRELIMINARY INVESTIGATION ON ACID GENERATING ...

coal and coal-bearing units to produce acid mine drainage conditions. ... The information obtained from this study could be used in predicting the types of ... LBC), Okaba surface mine and Orukpa underground mine (in MBC) have been ... expensive ways to analyze for acid-generating potential of rocks is described by...

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Assessment of the effect of cessation of coal mining on the socio ...

Apr 6, 2013 ... A sample of 200, including ex-coal mining personnel and community members .... consisted of all residents, including ex-mine workers at. Okaba. These were members of ... been associated with the enterprise in a variety of ways, there might be .... developed and applied to the locality. (ii) With reference to...

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Appraisal of the Economic Geology of Nigerian Coal Resources - iiste

The coal deposits discovered so far in Nigeria are located mainly in the Lower, Middle .... Other mines that are being worked in this area include those at Okaba and Orukpa .... Coal-based vapor fuels are produced through the process of gasification. ... Or they may be used in synthetic gases to produce chemicals or to help.

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Research Output Publications FEIT 2013 - University of Namibia

Akande JM and Jimoh BO, “Quarrying of Sand and Proposed Reclamation Method in ... Oreke Dolomite Deposit”, Journal of Minerals and Materials Characterization and ... Akande JM and Onifade M, Modelling of Okaba Underground Coal Mine ... Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS),.

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PRE-FEASIBILITY STUDY OF ELECTRICITY GENERATION FROM ...

Table 2.1: Existing Potential Coal Mines Sites With Reserves In Nigeria ……..5 .... It was also assumed that the methane content of the gas used for the CMM-to- .... appropriate utilization technology, vary with coal type and mining method. ..... hole drilling, Mining) are expected to resume soon at the Ogboyega, Okaba, and...

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Nigeria - Coal and Lignite - OnlineNigeria.com

Nevertheless, Nigeria's coal reserves are large, over 2 billion metric tonnes, ... Ogboyoga (100), Okaba (70), Orukpa (60), Ezimo (50), and Enugu (50) (FRN, 1987). ... Mine production capaci- ties after full rehabilitation and privatisation could...

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Full Article - PDF - SCIENCEDOMAIN International

Jan 27, 2015 ... British Journal of Applied Science & Technology ... Coal samples from 2 coal mines of Ogboyaga and Okaba in Kogi state .... Kjeldahl Method.

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PDF Download - THE IJES

Apr 30, 2014 ... Coal mining dates back to 1915 when sub-bituminous coals in the Mamu ... while other mines in the Owukpa and Okaba areas focussed on the Mamu Formation with the discovery of ..... MATERIALS AND METHODS ... in order to assess some molecular parameters used in source rock characterisation. V.

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Petrology, Rank And Geochemical Evaluation Of Maastrichtian ...

IOSR Journal of Applied Geology and Geophysics (IOSR-JAGG) e-ISSN: 2321–0990, ... have been characterized by petrological and geochemical techniques. ... Coal mining dates back to 1915 when sub-bituminous coals in the Mamu and ... Samples came from the EnuguOnyeama, Okpara, Ezimo and Okaba mines.

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Full Text PDF - International Journal of Scientific Research and ...

The technique was used to analyze high ranking Nigerian coals from Enugu and Okaba. ... The focus of this work are Nigerian coals from Enugu and Okaba in Enugu and Kogi ... Coal mining started at Enugu in the year 1915 by the then Nigeria ... and Nigerian Ministry of Mines and Steel Development has provided more...

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Enugu: Once upon the Coal Camp - The Nation Nigeria

Feb 9, 2014 ... The mud blocks used in building the houses have begun to crack while some ... In Kogi State where we had Okaba Coal mines, which was part of .... As you approach the areas the only visible signs to show that it was once a...

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Potentials, prospects and challenges of geologic CO2 ... - aascit.org

Aug 20, 2014 ... enhanced coalbed methane (ECBM) recovery techniques, based on injection of liquefied carbon ... of coal produced in successive years; also some mines were abandoned because ... Okaba, located on the eastern edge of Anambra Coal Basin. .... In oxy-fuel systems, oxygen instead of air is used for.

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Evaluating the influence of open cast mining of solid minerals on soil ...

Feb 12, 2012 ... energy as well as advancement in extraction techniques has increased the ... Exploration Agency that mine coal and Baryte minerals .... have been made relating high soil bulk density to poor ..... A study of Okaba, Kogi State,.

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