Demonstration of Optical Microscopy and Image
In this work, the premise of dust monitoring with polarized light microscopy was explored. Using images of coal and representative Discussion and conclusions. In this study the mineralogy and geochemistry of deposited dust (DD) coal mine samples were examined, and their respirable DD Comprehensive evaluation of potential coal mine dust
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(PDF) Demonstration of Optical Microscopy and Image Processing
PDF Respirable coal mine dust represents a serious health hazard for miners. Monitoring methods are needed that enable fractionation of dust into its Find, This paper describes the changes in the respirable coal mine dust sampling program and the equipment and procedures used by MSHA to process respirable coal mine dust Respirable coal mine dust sample processing Semantic Scholar
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Respirable coal mine dust sample processing OSTI.GOV
This paper describes the changes in the respirable coal mine dust sampling program and the equipment and procedures used by MSHA to process respirable coal mine dust This paper describes a standard methodology for characterization of respirable coal mine dust using scanning electron microscopy (SEM) with energy dispersive X-ray (EDX). Preliminary A Standard Characterization Methodology for
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Monitoring and Sampling Approaches to Assess Underground
Monitoring and Sampling Approaches to Assess Underground Coal Mine Dust Exposures compares the monitoring technologies and sampling protocols currently We realise that other possible sources of particulates can contaminate passively collected coal mine dust samples, such as PM generated by machines Trace element fractionation between PM10 and PM2.5 in
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Minerals Free Full-Text A Computer-Controlled SEM
This paper describes a CCSEM-EDX routine specifically developed for analysis of respirable dust samples from coal mines. The routine is verified based on reliability of results obtained on samples of In the late 1990s, despite years of efforts to understand and reduce coal worker’s pneumoconiosis (CWP) prevalence from more than 30% in 1970 to less than 4.2%, the level of occurrence among the US coal miners increased unexpectedly. The recent resurgence of lung diseases has raised concerns in the scientific and regulatory communities. In 2014, Minerals Free Full-Text Respirable Coal Mine Dust: A Review of
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A Standard Characterization Methodology for Respirable Coal Mine Dust
A key consideration for responsible development of mineral and energy resources is the well-being of workers. Respirable dust in mining environments represents a serious concern for occupational health. In particular, coal miners can be exposed to a variety of dust characteristics depending on their work activities, and some exposures 5 Optimizing Monitoring and Sampling Strategies. In response to the committee’s statement of task (see Appendix A), the preceding chapter of this report discussed the efficacy of current monitoring technologies and sampling approaches for respirable coal mine dust (RCMD) in U.S. mines, which are primarily driven by regulatory requirements.The Read "Monitoring and Sampling Approaches to Assess Underground Coal
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Preparation and Characterization of a Composite Dust Suppressant
In an effort to effectively control coal dust pollution and thereby reduce the harm of coal dust to human health, we prepared a highly efficient composite dust suppressant. First, dynamic contact angle and zeta potential measurements were used to select sodium dodecyl sulfonate (SDS) over sodium carboxymethyl cellulose and The re-identification of coal workers’ pneumoconiosis in Queensland in 2015 has prompted improvements in exposure monitoring and health surveillance in Australia. The potential consequences of excessive exposure to respirable dust may depend upon the size, shape and mineralogical classes of the dust. Technology has now Characterization of Particulates from Australian Underground Coal
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Minerals Free Full-Text Review of Respirable Coal Mine Dust
Respirable coal mine dust (RCMD) exposure is associated with black lung and silicosis diseases in underground miners. Although only RCMD mass and silica concentrations are regulated, it is possible that particle size, surface area, and other chemical constituents also contribute to its adverse health effects. This review @article{osti_426742, title = {Calibration and maintenance procedures for coal mine respirable dust samplers. Informational report}, author = {Tomb, T F and Parobeck, P S}, abstractNote = {The Federal Mine Safety and Health Act of 1977 requires that the average concentration of respirable coal mine dust be measured with a device Calibration and maintenance procedures for coal mine respirable dust
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A Toxicological Study of the Respirable Coal Mine Dust:
A major health risk to the mining industry is respirable coal mine dust (RCMD) [1,2,3].Workers in coal mines are exposed to a significant amount of RCMD that has been released into the mine’s atmosphere as a result of different routine activities, such as cutting, drilling, blasting, and transportation [4,5,6,7].Exposure to an elevated @article{osti_5324176, title = {Respirable coal mine dust sample processing}, author = {Raymond, L. D. and Tomb, T. F. and Parobeck, P. S.}, abstractNote = {The Federal Coal Mine Health and Safety Act of 1969 established mandatory dust standards for coal mines. Regulatory requirements for complying with the provisions of the Act were prescribed in Respirable coal mine dust sample processing OSTI.GOV
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(PDF) Demonstration of Optical Microscopy and Image Processing
Respirable coal mine dust represents a serious health hazard for miners. Monitoring methods are needed that enable fractionation of dust into its primary components, and that do so in real time.@article{osti_6037982, title = {Determination of alpha quartz particle distribution in respirable coal-mine dust samples and reference standards. Rept. of Investigations/1985}, author = {Huggins, C W and Johnson, S N and Segreti, J M and Snyder, J G}, abstractNote = {The objective of the Bureau of Mines research was to compare the size distribution of Determination of alpha quartz particle distribution in respirable coal
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Special Issue on mine dust research: health effects and control
From the perspective of the physical and chemical properties of dust in mines, the wettability of copper mine blasting dust is mainly controlled by particle size and pore structure (Jin et al. 2021).A molecular dynamics simulation study indicated that larger coal dust particle has higher wettability (Zhang et al. 2021).A novel chemical composite Respirable coal mine dust (RCMD) exposure is associated with black lung and silicosis diseases in underground miners. Although only RCMD mass and silica concentrations are regulated, it is possible that particle size, surface area, and other chemical constituents also contribute to its adverse health effects. This review summarizes measurement Minerals Free Full-Text Review of Respirable Coal Mine Dust
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Minerals Free Full-Text A Computer-Controlled SEM-EDX MDPI
White, E.W.; DeNee, P.B. Characterization of coal mine dust by computer processing of scanning electron microscope information. Ann. N. Y. Acad. Sci. 1972, 200, 666–675. [Google Scholar] Johann, V. Development and Implementation of an Automated Sem-Edx Routine for Characterizing Respirable Coal Mine Dust.Three dust samples used for method verification were collected from the same underground coal mine where the ROM sample used for method development originated. An Escort ELF pump with a Dorr-Oliver cyclone was used to collect the samples onto 37 mm PC filters, and each sample was collected over a period of about 120 min.A Standard Characterization Methodology for Respirable Coal Mine Dust
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Demonstration of Optical Microscopy and Image Processing to
Respirable coal mine dust represents a serious health hazard for miners. Monitoring methods are needed that enable fractionation of dust into its primary components, and that do so in real time. Near the production face, a simple capability to monitor the coal versus mineral dust fractions would be highly valuable for tracking The re-identification of coal workers’ pneumoconiosis in Queensland in 2015 has prompted improvements in exposure monitoring and health surveillance in Australia. The potential consequences of excessive exposure to respirable dust may depend upon the size, shape and mineralogical classes of the dust. Technology has now Characterization of Particulates from Australian Underground Coal
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The impact of coal mine dust characteristics on pathways to
From this work, it was established that the mineralogical and physical characteristics of coal mine dust could vary both between geographical locality and between point sources derived from primary processing streams (Johann-Essex et al., 2017; LaBranche et al., 2021; Pan et al., 2021; Sarver et al., 2021) (Fig. 3 timepoints 23, Respirable coal mine dust (RCMD) particles, particularly the nano-sized fraction (<1 μm) of the RCMD if present, can cause severe lung diseases in coal miners. Characterization of both the particle size and chemical composition of such RCMD particles remains a work in progress, in particular, with respect to the nano-sized fraction of RCMD. In this work, Characterization of Particle Size and Composition of Respirable Coal
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Reducing float coal dust PMC National Center for
Abstract. Controlling float coal dust in underground coal mines before dispersal into the general airstream can reduce the risk of mine explosions while potentially achieving a more effective and efficient use of rock dust. A prototype flooded-bed scrubber was evaluated for float coal dust control in the return of a continuous miner section.
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