coal mining and its variability

coal mining and its variability

  • Respirable Dust Study for Kentucky Coal Mines Department for

    Characterizing occupational exposure to regulated substances requires an understanding of both the accuracy and variability of measurements. This understanding is especially important for underground coal mining, where new and more stringent respirabledust regulations have been proposed. The proposed rule not 


    Chat Now
  • Planning for Reliable Coal Quality Delivery Considering Geological

    Jan 9, 2015 coal quality management in lignite mines discussed by the authors in previous publiions. In particular, methods of conditional simulation in geostatistics investigated in [10, 11] are applied to full scale reserve modelling of a large lignite field in Poland aiming to understand variability of coal quality.


    Chat Now
  • The role of spatial variability in coal seam parameters on gas

    Jun 13, 2008 Gas outburst is recognized as a potentially fatal hazard to be managed during the mining of gassy coal seams. Gas outbursts in Australian coal mines have been associated with the presence of geological structures in the coal and surrounding rocks, having a range of spatial scales from millimetres to 


    Chat Now
  • "CHARACTERIZING THE VARIABILITY IN RESPIRABLE DUST

    Establishing new requirements for respirable dust compliance requires an understanding of both the accuracy and variability of measurements. Measurement variability is especially important in underground mining where the workplace is constantly moving and ventilation controls are continually changing. The results of a 


    Chat Now
  • Comparison of noise reduction of earplugs between fit test and coal

    The coal mining industry relies heavily on a hearing protector (HP) for noise protection. Researchers suggested that individual HP fit tests be conducted to estimate the noise attenuation.This study examined whether individual fit tests accurately predicted workers' ear plug noise protection while working and whether the 


    Chat Now
  • The Nature of the Variability of Dust Concentrations at the Coal Face

    This may not be the complete list of references from this article. LONG WM. Airborne dust in coal mines: the sampling problem. Br J Ind Med. 1953 Oct10(4):241–244. [PMC free article] [PubMed] OLDHAM PD, ROACH SA. A sampling procedure for measuring industrial dust exposure. Br J Ind Med. 1952 Apr9(2):112–119.


    Chat Now
  • The role of spatial variability in coal seam parameters on gas

    Jun 13, 2008 Gas outburst is recognized as a potentially fatal hazard to be managed during the mining of gassy coal seams. Gas outbursts in Australian coal mines have been associated with the presence of geological structures in the coal and surrounding rocks, having a range of spatial scales from millimetres to 


    Chat Now
  • Increasing the efficiency of coal mining based on the concept of

    Apr 7, 2017 Increasing the efficiency of coal mining based on the concept of ShewhartDeming variability management. Vadim Mikhalchenko1* and Yuryi Rubanik2. 1 T.F. Gorbachev Kuzbass State Technical University, Institute of Economy and Management, Department of Economics, 28, Vesennaya str., Kemerovo, 


    Chat Now
  • The Impact of Variability of Selected Geological and Mining

    Oct 10, 2017 AbstractThe paper attempts to assess the impact of variability of selected geological (deposit) parameters on the value and risks of projects in the hard coal mining industry. The study was based on simulated discounted cash flow analysis, while the results were verified for three existing bituminous coal 


    Chat Now
  • Evaluating Variability of Aerosol Concentration in Coal Mining Areas

    In this study, the AOT wavelength 340nm is therefore taken for further analysis due to its higher variation in the area as well as its harmful effect on human health. It was observed that AOT concentration was higher in the industrial area in the vicinity of thermal power plant, Sponge iron factory, mining area and coal based 


    Chat Now
  • Time series model prediction and trend variability of aerosol optical

    A study of the assessment and management of air quality was carried out at 11 coal mines in India. Longterm observations (about 13 years, March 2000–December 2012) and modeling of aerosol loading ove.


    Chat Now
  • Environmental impact of the coal industry Wikipedia

    The environmental impact of the coal industry includes issues such as land use, waste management, water and air pollution, caused by the coal mining, processing and the use of its products. In addition to atmospheric pollution, coal burning produces hundreds of millions of tons of solid waste products annually, including 


    Chat Now
  • The Impact of Variability of Selected Geological and Mining

    The paper attempts to assess the impact of variability of selected geological (deposit) parameters on the value and risks of projects in the hard coal mining industry. The study was based on simulated discounted cash flow analysis, while the results were verified for three existing bituminous coal seams. The Monte Carlo 


    Chat Now
  • Adaptive optimization as a design and management IOPscience

    of adaptive optimization as basic methodology for coal mine enterprise management in conditions of high variability and uncertainty of economic and natural environment. Implementation of the proposed methodology requires a revision of the basic principles of open coal mining enterprises design. 1. Introduction.


    Chat Now
  • Analysis of the Silica Percent in Airborne Respirable Mine CDC

    the highest silica % (8.2 %, 9.8 %) along with the highest variability. The silica. % was found to be lower for samples collected in underground by comparison to surface and mill. In the coal industry, the samples collected in surface loca tions showed high silica % in the dust. For both the coal and M/NM industries, the % of 


    Chat Now
  • Variability in Fit Test Result for Earplugs and the Fraction of Noise

    Jul 11, 2013 Variability in Fit Test Result for Earplugs and the. Fraction of Noise Exposure Dose of Coal Miners due to Failure to Wear. MINGYU WU1*, STEVEN E. GUFFEY2, BRANDON C. TAKACS3, and KEVIN MICHAEL4. 1Department of Occupational Safety and Health, Grand Valley State University, Grand Rapids, 


    Chat Now
  • Comparison of noise reduction of earplugs between fit test and coal

    The coal mining industry relies heavily on a hearing protector (HP) for noise protection. Researchers suggested that individual HP fit tests be conducted to estimate the noise attenuation.This study examined whether individual fit tests accurately predicted workers' ear plug noise protection while working and whether the 


    Chat Now
  • The Nature of the Variability of Dust Concentrations at the Coal Face

    THE NATURE OF THE VARIABILITY OF. DUST CONCENTRATIONS AT THE COAL FACE. BY. P. D. OLDHAM. From the Pneumoconiosis Research Unit of the Medical Research Council, Llandough Hospital, near Cardiff. (RECEIVED FOR PUBLICATION AUGUST 4, 1953). It is well known that dust conditions in a coal mine 


    Chat Now
  • Variability of Coal Mine Drainage in Pennsylvania Resulting from

    Sep 23, 2013 Terry Schmidt P.E., Skelly and Loy, "Variability of Coal Mine Drainage in Pennsylvania Resulting from Coal Mining Practices and Geology" Mining Anthracite Regional History • Mid1800's – coal was extensively mined – fueled America's industrial revolution – coal became the economic base of the 


    Chat Now
  • "CHARACTERIZING THE VARIABILITY IN RESPIRABLE DUST

    Establishing new requirements for respirable dust compliance requires an understanding of both the accuracy and variability of measurements. Measurement variability is especially important in underground mining where the workplace is constantly moving and ventilation controls are continually changing. The results of a 


    Chat Now
Pre:fine silica sand in decorative concrete
Next:price high silica sand australia quarry