Nigeria

2021-8-23 · Nigeria possesses significant reserves of coal, but these deposits are being developed gradually. Coal is used by the railroad, by traditional metal industries, and by power plants to generate electricity. Coal mining, initially concentrated around the city …

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Coal Exploration and Mining Geology

2020-8-18 · UNESCO – EOLSS SAMPLE CHAPTERS GEOLOGY – Vol. V – Coal Exploration and Mining Geology - Colin R. Ward ©Encyclopedia of Life Support Systems (EOLSS) • Coal Marketing: the procuring of markets or development of facilities to use the coal that will come from the mine over its working life; • Mine Development: the acquisition, construction and commissioning of the plant

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Coal Deposits in Nigeria, West Africa with their Locations an…

Coal Deposits in Nigeria, West Africa with their Locations ...

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Coal Reserve Estimation and Selection of Mining Method in ...

Selection of mining method is often vacillating and a proper coal reserve estimation could be a solution to this, where the ''University of British Columbia (UBC) Method'' and ''Present Situation of ...

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DESIGN OF A HAULAGE WAY IN AN UNDERGROUND …

2010-6-23 · DESIGN OF A HAULAGE WAY IN AN UNDERGROUND COAL MINE 1Akande, J. M. And 1A. I. Lawal 1Department of Mining Engineering, The Federal University of Technology, P.M.B. 704, Akure. Email: [email protected] , [email protected] ABSTRACT The research work examines the design of a haulage way in an underground coal mine in Enugu, Nigeria.

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Data evaluation of trace elements determined in Nigerian ...

Data evaluation of trace elements determined in Nigerian coal using cluster procedures. Ewa IO(1). Author information: (1)Centre for Energy Research and Training, Ahmadu Bello University, Zaria, Nigeria. [email protected]

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Analysis of clean coal technology in Nigeria for energy ...

2018-4-1 · An analysis of clean coal technologies for the recovery of energy from Nigerian coals was carried out. The coal mines studied are Onyeama, Ogwashi, Ezimo, Inyi, Amasiodo, Okaba, Lafia-Obi, Owukpa Owukpa, Ogboyoga and Okpara. The estimated reserves of the ten coal deposit amount to 2.1 Gt, which is about 84% of the total coal reserves of the ...

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Crystalline Silica Analysis: A Comparison of Calibration ...

2012-8-30 · (NIOSH) are Method 7603 (crystalline silica in coal mine dust by IR) and Method 7500 (crystalline silica by XRD) [9]. For determination of the silica content of respirable coal mine dust samples, the Mine Safety and Health Administration (MSHA) employs the MSHA P7 Infrared Method, hereafter referred to as P7 [10,11].

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Table Coal Mining Subsidence Ponds That Use Di erent ...

2020-11-29 · collectively used as a control to analyze heavy metal contamination in coal mining subsidence ponds using di erent resource reutilization methods in order to provide a basis for reclamation plans for Pei County and other subsidence ponds. 2. Study Area As shown in Figure1, Pei County is located in the southern part of the North China Plain ...

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Characterization of Some Nigerian Coals for Power Generation

2016-5-12 · Five coal samples from Odagbo (Kogi State), Owukpa (Benue State), Ezimo (Enugu State), Amansiodo (Enugu State), and Inyi (Enugu State) of Nigerian coal deposits were subjected to proximate analysis, ultimate analysis, calorific value determination, and petrographic and thermogravimetric analysis to determine their suitability for power generation.

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A Guide to the Four Main Methods of Mining

2019-10-8 · More specifically, mining is used to extract non-renewable resources like fossil fuels, minerals and even water. There are four main methods of mining: underground, surface, placer and in-situ. The type of mining method used depends on …

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A REVIEW OF TECHNICAL POTENTIAL FOR COAL …

present coal production in Nigeria (Nigerian Coal Corporation Manual.) The Nigerian coal industry has 4 (four) existing mines at Okpara and Onyeama. There are underground mines at Enugu, Enugu state, and Owukpa, Benue state. In addition there is a surface mine at Okaba, Kogi- State.

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Surface coal mining practice in China

2009-9-1 · Surface coal mining technology, practice and development of mining systems are introduced since the founding of China. The development of surface coal mining systems can be classified into two stages: shovel-train mining system used as the major mining technology before 1980, combined mining systems have been used since 1980, that is, shovel-truck mining system used as the major …

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CDC

The Mine Safety and Health Administration (MSHA) routinely utilizes this LTA method to quantify the incombustible content of bulk dust samples collected from the roof, floor, and ribs of mining entries. The use of the stainless steel cassette with isokinetic inlet allowed NIOSH to adopt the LTA method …

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Natural radioactivity associated with bituminous coal ...

 · Gamma spectroscopic method was used to determine the natural radioactivity associated with the mining of Nigerian bituminous coal for the purpose of determining the radiological implications of coal mining in the country. The activity concentrations of the radionuclides detected range from 0.20±0.002 to 48.42±5.32 Bq kg -1. The overall natural radionuclide contribution to the ...

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Surface Mining Methods and Equipment

2020-8-25 · Highwall mining is a coal mining method for recovery of outcropped coal by mechanical excavation without removal of overburden. A continuous miner with single or multiple augers/cutting heads is operated underground and controlled remotely by crew located outside. Augering can be regarded as a supplementary method for open cast mining in

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Mining sector in Nigeria has anoptimistic future, but ...

2018-10-2 · AUTHOR: Sascha-Lee Solomonds, Mining Review Africa content editor "In 2015, coal mined in Nigeria totalled 144.88 billion metric tonnes, while metal ore mined totaled around 22 638.96 million metric tonnes," he illustrates. "Coal is largely exploited in Nigeria due to its use …

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Impacts of Coal mining: a Review of Methods and …

2018-12-5 · of coal at the mining site and its transportation to a power station distresses the environment2.Various methods have been used to assess the impacts of coal on human health and the environment during its complete life cycle3. The external costs of coal mining and transportation have also been attempted in a number of international studies4, 5, 6,7

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Types of Coal Mining

When it comes to mining coal, there are two processes by which coal can be removed from the ground: surface mining, or underground mining. In Australia, the majority of coal mining is done via the opencast method, although often the method of choice is dependent on certain characteristics of the coal deposit 1.. The opencast, also referred to as the open-pit method, is the ideal technique when ...

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ROLE OF COAL IN NIGERIA

2020-12-13 · 24 Nigeria 24.1 Summary of Coal Industry 24.1.1 R OLE OF C OAL IN N IGERIA Nigeria ranks low in worldwide coal production, with less than 30 thousand tonnes of coal production in 2012 (Table 22-1). Nigeria estimated its coal reserves at more than 2 billion tonnes, with approximately 650 million tonnes (Mmt) as proven (OnlineNigeria, 2014).

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Sampling and Testing in Coal Quality Management

one hour reference method is used to make calibration adjustments. ONE HOUR REFERENCE . METHOD. CALIBRATION TESTING. The coal flow, moisture variations and other conditions that can have an effect . on the coal stream or coal characteristics must be reviewed. The number of seams, coal types or blends to be used in the test must be established, and

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Analysis and Sources of Polycyclic Aromatic Hydrocarbons ...

2016-1-13 · This study analysed coal, plant and soil samples collected from the vicinity of Okobo coal mine in Nigeria for Polycyclic aromatic hydrocarbons (PAHs) and evaluated the sources of the PAH contamination in the environmental samples. The environmental samples were extracted by sonication using a ternary solvent system and analysed for 16 PAHs by gas chromatography–mass spectrometry …

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Nigeria

2020-9-14 · Nigeria has proven reserves of coal, which the Nigerian Coal Corporation (NCC) indicate it has a mandate to identify U.S. technical partners for clean coal development and conversion, coal gasification, manufacture of coal briquettes and cement and coal to power generation to help meet government''s proposed national power target of 14,000MW.

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Investigating different methods used for approximating ...

2021-1-1 · There are various methods that can be used to approximate mining-induced loads in stratified rock masses to be used in pillar design. The empirical methods are based on equations derived from large databases of various case studies. They are implemented in government approved design tools and are widely used.

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Grouting or Drainage?

2012-2-19 · Zambia (Freeman, 1970[21). At this mine, a sublevel caving mining method was used, and local stream beds were filled with tailings to seal the cracks developed by subsidence. Later, more environmental friendly methods for surface stream sealing were proposed for this mine 196 IMWA SYMPOSIUM JOHANNESBURG 1996

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Coal mining

2  · Coal mining - Coal mining - Choosing a mining method: The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining. Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods, and the choice of which method to use in extracting a coal …

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Background gamma terrestrial dose rate in Nigerian ...

2004-1-15 · MATERIALS AND METHODS. Two low-level gamma survey metres each with a reading accuracy of 0.5 nGy h −1 obtained from the nuclear laboratory of the Department of Physics and the Centre for Energy Research and Development, Obafemi Awolowo University Ile-Ife, Nigeria were used for these measurements. Calibration for the survey metres was carried ...

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Natural radioactivity associated with bituminous coal ...

Gamma spectroscopic method was used to determine the natural radioactivity associated with the mining of Nigerian bituminous coal for the purpose of determining the radiological implications of coal mining in the country. The activity concentrations of the radionuclides detected range from 0.20±0.002 to 48.42±5.32 Bq kg -1 . The overall natural radionuclide contribution to the radioactivity ...

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Effects of coal mining on the water resources in the ...

2016-5-7 · Coal mining in the Enugu area of Nigeria has generated a lot of mine waste that has been dumped in landfills and surface dumps chosen for convenience and proximity to the waste source rather than environmental, geologic or engineering …

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Developing and using empirical models for geotechnical ...

2020-10-13 · Mark Colwell, Developing and using empirical models for geotechnical design in underground coal mining, in Naj Aziz and Bob Kininmonth (eds.), Proceedings of the 2019 Coal Operators Conference, Mining Engineering, University of Wollongong, 18-20 February 2019, 1-22.

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Coal Mining –The 2 Most Basic Techniques Of Extraction ...

2018-3-25 · The different types of surface mining that can be used are: 1. Strip mining 2. Auger Mining 3. Open-pit mining 4. Mountain removal mining The second fundamental method of extracting coal is underground mining. This technique is used when the coal is buried deep inside the earth. The machines used for this type of coal …

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Coal Deposits in Nigeria, West Africa with their Locations ...

Method of Coal Mining in Nigeria, and West Africa. During the coal mining era, the method used in the Western part of Africa especially in Nigeria was the underground mining. This process is quite inexpensive when compared to other mining methods, …

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Nigeria''s coal deposits identified

2010-7-2 · Nigeria''s coal deposits identified. Nigeria has major unexploited coal resources. The government has recently placed a high priority on utilising these resources to increase Nigeria''s electricity generating capacity. Nigeria''s goal is to revitalise the coal mining …

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NIGERIA''S COUNTRY REPORT ON COAL MINE METHANE …

2006-5-25 · NIGERIA''S COUNTRY REPORT ON COAL MINE METHANE RECOVERY AND USE. 1.0 INTRODUCTION The Nigerian arm of the Methane to Markets Partnership is anchored on Coal Production since independence. This coal availability is predominant in several mine sites and this coal are located in Enugu, Imo, Kogi, Delta, Anambra, Bauchi, Adamawa,

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List of Mineral Resources in Nigeria and Their Location ...

2021-1-27 · The exploration of coal started at the ogubate mine in 1918. Research has also shown that Nigeria coal is one of the best coal in the world because of its low sulphur and ash content which makes it eco-friendly, Nigeria has nearly 3 billion tonnes of coal reserves in 17 coal …

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