measurement of radioactivity in coal mining areas

Mine Tailings Disposal Methods

The methods commonly employed for disposal of these wastes in each of the industry segments (that is, coal mining and metal-ore and non-metal mineral mining) are described below. Mining Coal Tailings Disposal As has been pointed out earlier in this section, immense quantities of wastes are produced by coal mining activities.

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Consideration of Kaolinite Interference Correction for ...

measurement in coal dust, including the National Institute for Occupational Safety and Health (NIOSH) Manual of Analyti-calMethods(NMAM) 7602 Silica, Crystalline by IR (KBr pel-let),(1) 7603 Quartz in coal mine dust, by IR (redeposition),(2) and Mine Safety and Health Administration (MSHA) P-7 (In-

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Federal Register :: Request for Research Sites To Measure ...

The National Institute for Occupational Safety and Health (NIOSH) of the Centers for Disease Control and Prevention (CDC), is seeking research sites to measure composition of sealed area atmosphere in coal mines. NIOSH seeks to conduct scientific studies of the composition of sealed area...

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Radioactivity of Mine Waters in Upper Silesian Coal Basin ...

and their influence on the natural environment in mining areas. INVESTIGATION SITE The Upper Silesian Coal Basin (USCB) is located in the Southern-West part of Poland. Presently there are 66 underground coal mines there extracting approximately 150xl06 tons of coal per year. The depth of mine workings is from 350 to 1050 m.

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The Situation of NORM in Non-Uranium Mining in China

The Situation of NORM in Non-Uranium Mining in China Liu Hua ... III NORM situation in non-uranium mining • NORM exposure to public from coal industry –normalized collective dose, from air effluent within ... •Higher radiation area: mining areas, about 55Km2, typical 200—800nGy/h –mining sites, 600 - .

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EFFECTS OF MINING ON ENVIRONMENT IN THE STATE OF .

Mining is the extraction of valuable minerals or other geological materials from the earth, usually from an ore body, vein or (coal) seam. Materials recovered by mining include base metals, precious metals, iron, uranium, coal, diamonds, limestone, oil shale, rock salt and potash.Any material that cannot be grown through agricultural processes, or created artificially in a laboratory or ...

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measurement frequency is less than required for CEM, it may meet the PEM requirements with frequent sampling. If the existing automatic monitoring of gas proportion is not suitabl

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Radioactive contamination - Wikipedia

Radioactive contamination, also called radiological contamination, is the deposition of, or presence of radioactive substances on surfaces or within solids, liquids or gases (including the human body), where their presence is unintended or undesirable (from the .

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The impact of revegetation on microclimate in coal mining ...

implications of microclimate alteration in a coal mining areas in East Kalimantan. The Measurement of possible microclimate condition was taken at two sites including under forest cover and the nearest open space. Two climate parameters were taken into consideration: solar radiation .

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Glossary of Mining Terms

Rock factor - The number of cubic metres of a particular rock type required to make up one tonne of the material. One tonne of a highly siliceous ore may occupy 0.40 cubic metres, while a tonne of dense sulphide ore may occupy only 0.25 cubic metres. Rock mechanics - The study of the mechanical properties of rocks,...

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Journal of Sustainable Mining - Elsevier

That is why Journal of Sustainable Mining covers also topics related to Environmental Protection at Industrial Areas; Safe waste disposal and Post-mining land reclamation including recently raised problems caused by NORM (Naturally Occurring Radioactive Materials) that are inherent in exploitations of many kinds of natural resources.

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Environmental impact of nuclear power - Wikipedia

In terms of net radioactive release, the National Council on Radiation Protection and Measurements (NCRP) estimated the average radioactivity per short ton of coal is 17,100 millicuries/4,000,000 tons. With 154 coal plants in the United States, this amounts to emissions of 0.6319 TBq per year for a single plant.

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Something in the air: time for independent testing in coal ...

Mar 08, 2012· Something in the air: time for independent testing in coal areas ... for example in New South Wales coal mines and coal fired power ... The impact of coal mining and burning in urban areas .

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Texas RRC - NORM (Naturally Occurring Radioactive Material)

The average person in the United States is exposed to about 360 millirems of radiation from natural sources each year. A millirem, or one one-thouh of a rem, is a measure of radiation exposure. More than 80% of this exposure level comes from background radiation sources.

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Radionuclide concentration: The coal ash effect

Radionuclide concentrations in coal ash, soil mixed with coal ash and soil were determined using the gamma spectroscopic method. The average activity concentrations of 226Ra, 232Th, and 40K in coal ash samples were found as 35.0, 5.8, and 109.4 Bq/kg, respectively. The average activity concentrations of 226Ra, 232Th and 40K in soil mixed with coal ash samples varied from 21.2 to 30.8, 48.6 to ...

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Questions and Answers on Mine Rescue and ....gov

The purpose of air locking is to recover portions of the sealed fire area or the entire area in a manner that will prevent increasing the oxygen content in unexplored areas to avoid an explosive atmosphere or rekindling or intensifying the fire when a suitable air lock has been erected, a proper organization and proper and adequate equipment ...

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6 Potential Environmental Effects of Uranium Mining ...

Uranium Mining in ia on Drinking Water Sources. a uranium mine/mill complex in the United States occurred near Church Rock, New Mexico, in June 1979. A breach of an earthen dam containing solid and liquid tailings caused the release of 1,100 tons of radioactive mill waste and 95 .

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Radon ( 222 Rn) concentration in indoor air near the coal ...

Aug 01, 2012· Read "Radon ( 222 Rn) concentration in indoor air near the coal mining area of Nui Beo, North of Vietnam, Journal of Environmental Radioactivity" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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Glossary of Mining Terms

Glossary of Mining Terms . ... Scintillation counter - An instrument used to detect and measure radioactivity by detecting gamma rays; ... Strip mine - An open-pit mine, usually a coal mine, operated by removing overburden, excavating the coal seam, then returning the overburden.

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Emissions of Naturally Occuring Radioactivity: Underground ...

Working level measurements were made in the ventilation air flow at the 1350-foot level prior to reaching the working areas of the mine; at the 1350-foot level where air was picked up from the 1440-, 1410-, and 1380-foot levels; at the 1110-foot level after the air had passed all working areas; and at .

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U. S. Mining Enforcement and Safety Administration U. S ...

Cleaning Out, Sealing and Mining Through Wells Penetrating Areas of Active Coal Mines in Northern West ia by Paul J. Componation; Jack E. Tisdale and Joseph Pasini III (C) Covers demonstrations that began in 1971 to prove the effectiveness of well plugging as a substitute for the support pillars normally left around oil and gas wells.

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Mining Operation: Types, Impacts and Remedial Measures

Mining Operation: Types, Impacts and Remedial Measures! Mining is the process of taking mineral and other substances from the earth. These substances include metal compounds, non-minerals such as coal, sand, oil and natural gas and many other useful things.

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Chinese Coal Ash Too Radioactive For Use | Asian Scientist ...

Nov 17, 2017· In this study, scientists at Duke University''s Nicholas School of the Environment and the China University of Mining and Technology measured naturally occurring radioactivity in high-uranium coals from 57 sites in China. They also measured radiation levels in coal ash residues produced from this coal, and in soil collected from four sites.

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Coal Exploration and Mining Geology

V – Coal Exploration and Mining Geology - Colin R. Ward ©Encyclopedia of Life Support Systems (EOLSS) Cores of between 45 and 85 mm in diameter are typically taken for coal exploration programs. Larger diameter cores, 150 mm and 200 mm, may also be taken for bulk sampling and pilot-scale coal preparation tests.

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Technical data on nucleonic gauges -

mass per unit area of coal. The absorption of the higher energy gamma rays depends almost entirely on the mass per unit area of coal in the beam. Ash content is determined by combining measurements of the two beams. The determination is independent of both the bed thickness and the mass of the coal.

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THE CASE OF C M REAS IN, Ibank

Social Capital Initiative Working Paper No. 18 EXPLORING THE CONCEPT OF SOCIAL CAPITAL AND ITS RELEVANCE FOR COMMUNITY-BASED DEVELOPMENT: THE CASE OF COAL MINING AREAS IN ORISSA, INDIA By Enrique Pantoja The World Bank

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INTRODUCTION TO MINING - Ciência Viva

the mine property,although he or she may share those duties with those in the environmental fields. The fields of processing,refining,and fabricating are assigned to metallurgy,although there is often some overlap in the mineral processing area with mining engineering. 4 INTRODUCTION TO MINING

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Natural Radioactivity and Assessment of Associated ...

Measurement of natural radioactivity in soil is ... Barapukuria coal mine is currently under production. A 2×125 MW coal-fired thermal power plant has been ... The only large industrial area nearby is this coal mine including its residential complexes as seen in Figure 2. The nearest town is Phulbari, a Thana

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Mine Ventilation Systems

As a short term measure, fire-resistant line brattices may be tacked to roof, sides, and floor in underground coal mines to provide temporary stoppings where pressure differentials are low in and around working areas. For metal and non-metal mines, vent tubing is generally used in 163

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COAL MINING AND THE ENVIRONMENT

Opencast mining is practised when the geology makes strip mining inappropriate. An example is the huge Grootegeluk coal mine in the Limpopo Province. The primary coal measures are some 80m thick, and lie below a few metres of overburden. The coal is distributed in thin seams interspersed with bands of shale and stone – the deposit in vertical

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