Department of Mining and Minerals Engineering
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Departmental Publications, Department of Mining and Minerals Engineering [18]
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Scholarly Works, Department of Mining and Minerals Engineering [57]
Research articles, presentations, and other scholarship
Recent Submissions
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Comparison of respirable coal mine dust constituents estimated using FTIR, TGA, and SEM-EDX
(Springer, 2022-02-24)Since the mid-1990s, there has been a resurgence of severe lung disease among US coal miners. This has prompted efforts to better characterize and monitor respirable dust exposures—especially with respect to mineral ... -
On the occurrence and persistence of coal-mineral microagglomerates in respirable coal mine dust
(Springer, 2022-02-10)A previous effort to characterize respirable coal mine dust in 16 US mines turned up a curious finding: particle-based analysis using scanning electron microscopy (SEM) tended to overpredict the abundance of dust sourced ... -
An innovative methodology for the assessment and maintenance of e-learning courses using the Community of Inquiry model
(Taylor and Francis, 2021-06-14)As part of the creation of the series of online, asynchronous learning courses developed for the community of underground ventilation practitioners (Aeolus Modules), the authors have developed an innovative plan for the ... -
Particle size and mineralogy distributions in respirable dust samples from 25 US underground coal mines
(Elsevier, 2021-11-01)Detailed characterization of respirable coal mine dust is critical to understanding occupational health outcomes, as well as improving exposure monitoring and dust controls in mines. However, data on characteristics such ... -
A Hybrid Experimental and Theoretical Approach to Optimize Recovery of Rare Earth Elements from Acid Mine Drainage Precipitates by Oxalic Acid Precipitation
(MDPI, 2022-02-12)The development of processing techniques for the extraction of rare earth elements and critical minerals (REE/CM) from acid mine drainage precipitates (AMDp) has attracted increased interest in recent years. Processes under ... -
Notes on the Potential for the Concentration of Rare Earth Elements and Yttrium in Coal Combustion Fly Ash
(MDPI, 2015-06-23)Certain Central Appalachian coals, most notably the Fire Clay coal with a REY-enriched volcanic ash fall tonstein, are known to be enriched in rare earth elements. The Fire Clay tonstein has a greater contribution to the ... -
The Effect of Conditioning on the Flotation of Pyrrhotite in the Presence of Chlorite
(MDPI, 2017-07-20)The influence of conditioning on the flotation of pyrrhotite in the presence of chlorite was investigated through flotation tests, sedimentation tests, and X-ray photoelectron spectroscopy (XPS) analysis. The flotation ... -
Flotation separation of scheelite from calcite using mixed collectors
(Elsevier, 2017-12)Flotation separation of scheelite from calcite is difficult due to the similarities in their surface properties. In this work, the flotation behavior of scheelite and calcite using oxidized paraffin soap(OPS), benzohydroxamic ... -
Acid Leaching of Rare Earth Elements from Coal and Coal Ash: Implications for Using Fluidized Bed Combustion To Assist in the Recovery of Critical Materials
(American Chemical Society, 2019-07-18)High temperature pretreatment of coal-based mineral matter in an oxidizing environment significantly enhances the leaching characteristics of rare earth elements (REEs). A research study has found that the temperatures ... -
Study on the activation mechanism of lead ions in wolframite flotation using benzyl hydroxamic acid as the collector
(Elsevier, 2019-09)The activation mechanism of Pb(II) on the flotation of wolframite was systematically investigated. Micro-flotation test results showed that Pb(II) effectively improved the flotation of wolframite in the presence of benzyl ... -
Effects of Sodium Alginate on the Flotation Separation of Molybdenite From Chalcopyrite Using Kerosene as Collector
(Frontiers, 2020-04-28)In this paper, the effect of sodium alginate (SA) on the flotation separation of molybdenite (MoS2) from chalcopyrite using kerosene as collector was systematically investigated. The results of single-mineral micro-flotation ... -
Effects of contaminant metal ions on precipitation recovery of rare earth elements using oxalic acid
(2022-01-01)Solution equilibrium calculations were performed in this study to understand the impact of contaminant metal ions on the precipitation efficiency of selected rare earth elements (Ce3+, Nd3+, and Y3+) using oxalic acid as ... -
Leaching recovery of rare earth elements from the calcination product of a coal coarse refuse using organic acids
(Elsevier, 2022-02-01)Due to the increasing criticality of rare earth elements (REEs), it has become essential to recover REEs from alternative resources. In this study, systematic REEs leaching tests were performed on the calcination product ... -
A Fundamental Economic Assessment of Recovering Rare Earth Elements and Critical Minerals from Acid Mine Drainage Using a Network Sourcing Strategy
(MDPI, 2021-11-22)In recent years, acid mine drainage (AMD) has emerged as a promising unconventional source of rare earth elements (REEs) and other critical minerals (CMs) such as cobalt and manganese. In this regard, AMD provides a natural ... -
Characteristics of respirable dust in eight Appalachian coal mines: A dataset including particle size and mineralogy distributions, and metal and trace element mass concentrations
(Elsevier, 2019-08-01)Respirable dust samples were collected in several key locations of eight underground coal mines in central and northern Appalachia. In total, there were 76 unique sampling events (i.e., specific location in a specific ... -
Phase Behavior and Composition Distribution of Multiphase Hydrocarbon Binary Mixtures in Heterogeneous Nanopores: A Molecular Dynamics Simulation Study
(MDPI, 2021-09-18)In this study, molecular dynamics (MD) simulation is used to investigate the phase behavior and composition distribution of an ethane/heptane binary mixture in heterogeneous oil-wet graphite nanopores with pore size ... -
Review of the Evolution of Mining-Induced Stress and the Failure Characteristics of Surrounding Rock Based on Microseismic Tomography
(Hindawi, 2021-09-16)With the gradual depletion of shallow resources, deep mining has become an inevitable trend and has become an important part of the world mining industry. The high stress concentration caused by redistribution of original ... -
Direct-on-Filter FTIR Spectroscopy to Estimate Calcite as A Proxy for Limestone ‘Rock Dust’ in Respirable Coal Mine Dust Samples
(MDPI, 2021-08-25)Application of fine, inert ‘rock dust’ (RD) to the surfaces in underground coal mines is a common method for mitigating coal dust explosion hazards. However, due to its size, RD has the potential to contribute to the ... -
Demonstration of Optical Microscopy and Image Processing to Classify Respirable Coal Mine Dust Particles
(MDPI, 2021-08-02)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, ... -
Exploratory analysis of machine learning methods in predicting subsurface temperature and geothermal gradient of Northeastern United States
(2021-07-02)Geothermal scientists have used bottom-hole temperature data from extensive oil and gas well datasets to generate heat flow and temperature-at-depth maps to locate potential geothermally active regions. Considering that ...
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