Open Access. Powered by Scholars. Published by Universities.®

Mining Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

1,260 Full-Text Articles 1,656 Authors 205,098 Downloads 41 Institutions

All Articles in Mining Engineering

Faceted Search

1,260 full-text articles. Page 16 of 18.

Production Scheduling And Waste Disposal Planning For Oil Sands Mining Using Goal Programming, E. Ben-Awuah, H. Askari-Nasab, Kwame Awuah-Offei 2012 Missouri University of Science and Technology

Production Scheduling And Waste Disposal Planning For Oil Sands Mining Using Goal Programming, E. Ben-Awuah, H. Askari-Nasab, Kwame Awuah-Offei

Mining and Nuclear Engineering Faculty Research & Creative Works

In oil sands mining, timely provisions of ore and tailings containment with less environmental footprints are the main drivers of profitability and sustainability. The recent Alberta Energy Resources Conservation Board Directive 074 requires oil sands waste disposal planning to be an integral part of mine planning. This requires the development of a well integrated strategy of directional mining and tailings dyke construction for in-pit and ex-pit tailings storage management. The objectives of this paper are to: 1) determine the order and time of extraction of ore, dyke material and waste that maximizes the net present value; 2) determine the destination ...


Investigating Planer Propagation Of A Shockwave In A Shock Tunnel, John Rathbun, Dave McLane 2012 University of Kentucky

Investigating Planer Propagation Of A Shockwave In A Shock Tunnel, John Rathbun, Dave Mclane

Kaleidoscope

No abstract provided.


Effect Of Shock Front Geometry On Shock Depolarization Of Pb(Zr 0.52ti 0.48)O₃ Ferroelectric Ceramics, S. I. Shkuratov, Jason Baird, E. F. Talantsev 2012 Missouri University of Science and Technology

Effect Of Shock Front Geometry On Shock Depolarization Of Pb(Zr 0.52ti 0.48)O₃ Ferroelectric Ceramics, S. I. Shkuratov, Jason Baird, E. F. Talantsev

Mining and Nuclear Engineering Faculty Research & Creative Works

By use of experimentation, we detected a shock wave geometry effect on the depolarization of poled PbZr0.52Ti0.48)O3 Z(PZT 52/48) ferroelectrics. It follows from the experimental results that shock front geometry is one of key parameters in the shock depolarization of PZT 5248 ferroelectrics. This shock depolarization effect forms a fundamental limit to miniaturization of explosive-driven shock-wave ferroelectric generators (FEGs). Based on obtained experimental results, we developed miniature generators that reliably produce pulsed voltages exceeding 140 kV.


Note: Utilizing Pb(Zr 0.95ti 0.05)O₃ Ferroelectric Ceramics To Scale Down Autonomous Explosive-Driven Shock-Wave Ferroelectric Generators, S. I. Shkuratov, Jason Baird, E. F. Talantsev 2012 Missouri University of Science and Technology

Note: Utilizing Pb(Zr 0.95ti 0.05)O₃ Ferroelectric Ceramics To Scale Down Autonomous Explosive-Driven Shock-Wave Ferroelectric Generators, S. I. Shkuratov, Jason Baird, E. F. Talantsev

Mining and Nuclear Engineering Faculty Research & Creative Works

Further miniaturization of recently designed autonomous ferroelectric generators (FEGs) S. I. Shkuratov, J. Baird, and E. F. Talantsev, Rev. Sci. Instrum. 82, 086107 (2011), which are based on the effect of explosive-shock-wave depolarization of poled ferroelectrics is achieved. The key miniaturization factor was the utilization of high-energy density Pb(Zr0.95Ti0.05)O3 (PZT 955) ferroelectric ceramics as energy-carrying elements of FEGs instead of the previously used Pb(Zr0.52Ti0.48)O3 (PZT 5248). A series of experiments demonstrated that FEGs based on smaller PZT 955 ferroelectric elements are capable of producing ...


The Effects Of The Flyer Plate's Radius Of Curvature On The Performance Of An Explosively Formed Projectile, Phillip R. Mulligan, Jason Baird, Joshua Hoffman 2012 Missouri University of Science and Technology

The Effects Of The Flyer Plate's Radius Of Curvature On The Performance Of An Explosively Formed Projectile, Phillip R. Mulligan, Jason Baird, Joshua Hoffman

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

An explosively formed projectile (EFP) is known for its ability to penetrate vehicle armor effectively. Understanding how an EFP’s physical parameters affect its performance is crucial to development of armor capable of defeating such devices. The present study uses two flyer plate radii of curvature to identify the experimental effects of the flyer plate’s radius of curvature on the measured projectile velocity, depth of penetration, and projectile shape. The Gurney equation is an algebraic relationship for estimating the velocity imparted to a metal plate in contact with detonating explosives. The authors of this research used a form of ...


Geometric Variables Shock-Tunnel Configurations And Their Effects On Pressure-Time Waveforms, Chase W. Guengerich, Mark A. Faulhaber 2012 University of Kentucky

Geometric Variables Shock-Tunnel Configurations And Their Effects On Pressure-Time Waveforms, Chase W. Guengerich, Mark A. Faulhaber

Kaleidoscope

No abstract provided.


Knott, James Proctor, 1830-1911 (Sc 640), Manuscripts & Folklife Archives 2012 Western Kentucky University

Knott, James Proctor, 1830-1911 (Sc 640), Manuscripts & Folklife Archives

MSS Finding Aids

Finding aid and scan (Click on "additional files" below) for Manuscripts Small Collection 640. Letter from James Proctor Knott, Washington, D.C., to Adolph Sutro, (Virginia City, Nevada?) the mining engineer who directed the construction of a tunnel for more efficient mining into the Comstock Lode after receiving the right of way through public lands by an act of Congress. Knott, U.S. Representative from Kentucky, affirms that Sutro has his support.


Development And Validation Of A Model For Granular Material Volume Measurements, Pourya Fasounaki 2012 University of Nebraska-Lincoln

Development And Validation Of A Model For Granular Material Volume Measurements, Pourya Fasounaki

Industrial and Management Systems Engineering -- Dissertations and Student Research

Keeping inventory record of packed grains in silos poses challenges since the bulk material’s different segments do not discharge uniformly, leading to formation of random peaks and valleys on the surface. To facilitate obtaining accurate volume measurement of the grains by taking into account this non-linear behavior on the surface, laser or plumb-bob level-sensing devices are employed at different part of the surface to probe the level of material under those regions.

The main goals of this research is to study the behavior of granular material in silo while discharging downward and by doing so, differentiate certain flow patterns ...


Thermal Combustion Of Lean Methane–Air Mixtures: Flow Reversal Research And Demonstration Reactor Model And Its Validation, Krzysztof J. Gosiewski 2012 Polish Academy of Sciences - Institute of Chemical Engineering

Thermal Combustion Of Lean Methane–Air Mixtures: Flow Reversal Research And Demonstration Reactor Model And Its Validation, Krzysztof J. Gosiewski

Krzysztof Gosiewski

Problem of the coal mine shafts ventilation air methane (VAM) utilization is briefly presented. A research and demonstration plant experiments were carried out as the first step to a future industrial application. The plant contained a thermal flow reversal reactor (TFRR) as the main unit where lean methane–air mix- ture is combusted. The study consisted of the plant experiments and mathematical model simulations as well. The paper presents the mathematical model description and its experimental validation based on comparison of the model results with measured plant data. The aim of the paper is to assess whether dynamic, one dimensional ...


Selecting An Electrical Power Source At The Scoping Level For A Mining Project, Christopher Dawson Van Arsdale 2012 Michigan Technological University

Selecting An Electrical Power Source At The Scoping Level For A Mining Project, Christopher Dawson Van Arsdale

Dissertations, Master's Theses and Master's Reports - Open

The electrical power source is a critical component of the scoping level study as the source affects both the project economics and timeline. This paper proposes a systematic approach to selecting an electrical power source for a new mine. Orvana Minerals Copperwood project is used as a case study. The Copperwood results show that the proposed scoping level approach is consistent with the subsequent much more detailed feasibility study.


Finite Element Analysis Of Blade-Formation Interactions In Excavation, Osei Brown 2012 Missouri University of Science and Technology

Finite Element Analysis Of Blade-Formation Interactions In Excavation, Osei Brown

Masters Theses

"The efficiency and costs of mining operations greatly depend on the efficient design and use of excavators. The performance of these capital-intensive excavators requires thorough understanding of the physical and design factors that affect the formation-cutting tool interaction process. The current body of knowledge, based on experimental and analytical methods, provides limited understanding of these factors, which limits the accurate design and performance of excavators. The soil constitutive equations used in most of the available finite element (FE) models also fail to adequately capture the elastic and plastic behaviors of soil formations. This research initiative uses FE techniques to model ...


Automated System To Improve Levelness Of Reconstructed Soil, Venkata Srikiran Bodapati, Larry G. Wells 2012 University of Kentucky

Automated System To Improve Levelness Of Reconstructed Soil, Venkata Srikiran Bodapati, Larry G. Wells

Biosystems and Agricultural Engineering Faculty Publications

Extraction of coal, ores, and minerals from the earth by surface mining has occurred for many years and has always presented a significant challenge with regard to restoration of productive soil to mined areas. Federal and state regulations require that land should be returned to pre-mine productivity or reclaimed as per specific standards following mining. Excessive compaction of reconstructed soil caused by traffic of heavy earth moving equipment has been an enduring challenge regarding successful restoration of soil. A mechanical system was previously designed and developed to reconstruct soil to a depth of 1.22 m (48 in.) while completely ...


Effects Of Coal Comminution In Relation To Waterjet And Selected Feed Properties, Yaqing Li 2012 Missouri University of Science and Technology

Effects Of Coal Comminution In Relation To Waterjet And Selected Feed Properties, Yaqing Li

Masters Theses

"The necessity to develop a viable alternative to oil means that the development of coal-water fuels (CWF) has become increasingly important. However, the existing methods of comminution to prepare ultrafine particles for CWF are very inefficient. Consequently, a number of novel methods of comminution have been investigated in order to increase the efficiency of the process.

In this research, a new method of comminution using a high-pressure waterjet has been tested to produce ultrafine particle sizes necessary for efficient CWF process. To establish the fundamental performance of the waterjet mill, the influence of the operational pressure, standoff distance, feed size ...


The Effects Of Water On Sympathetic Detonation And Dead Pressing Of Dynamite And Emulsions, Adam Michael Doerfler 2012 Missouri University of Science and Technology

The Effects Of Water On Sympathetic Detonation And Dead Pressing Of Dynamite And Emulsions, Adam Michael Doerfler

Masters Theses

Dynamite and emulsions are very effective explosives in blasting; however they do have some shortcomings. Dynamite is prone to sympathetic detonation whereas emulsions are prone to dead pressing. While this does not happen all the time, the conditions in which the explosives are used do have an effect on whether or not they will sympathetically detonate or dead press.

Numerous researchers have investigated sympathetic detonation for a relationship between the distance between charges, hole separation distance, and size of explosive. This research aimed to look at how hole separation distance was affected when water was introduced into the boreholes for ...


3d Finite Element Analysis Of Pwa-Oil Sand Terrain System Interaction, Y. Li, Samuel Frimpong, W. Y. Liu 2012 Missouri University of Science and Technology

3d Finite Element Analysis Of Pwa-Oil Sand Terrain System Interaction, Y. Li, Samuel Frimpong, W. Y. Liu

Mining and Nuclear Engineering Faculty Research & Creative Works

A simulator for analyzing the interaction between the oil sand terrain and a pipe wagon articulating (PWA) system has been developed in this paper. An elastic-plastic oil sand model was built based on the finite element analysis (FEA) method and von Mises yield criterion using the Algor mechanical event simulation (MES) software. The three-dimensional (3D) distribution of the stress, strain, nodal displacement, and deformed shape of the oil sands was animated at an environmental temperature of 25C. The 3D behavior of the oil sand terrain was investigated with different loading conditions. The effect of the load and contact area on ...


Collectors For Enabling Flotation Of Oxidized Coal, Raghav M. Dube 2012 University of Kentucky

Collectors For Enabling Flotation Of Oxidized Coal, Raghav M. Dube

Theses and Dissertations--Mining Engineering

The coalburg seam coal is an example of difficult to float bituminous coal. Laboratory tests conducted on coalburg flotation feed sample revealed recovery values around 28% with 15% product ash when using fuel oil as collector under natural pH conditions. A detailed study showed that increasing pH from natural value of 5.6 to 7.5 provided a significant improvement in recovery of approximately 32 absolute percentage points. The improvement is believed to be result of the release of humic acids from the surface and the dispersion of clay particles thereby leaving a more hydrophobic surface.

Based on the tests ...


Development Of Strategies To Minimize The Release Of Trace Elements From Coal Waste Sources, Mohammad Rezaee 2012 University of Kentucky

Development Of Strategies To Minimize The Release Of Trace Elements From Coal Waste Sources, Mohammad Rezaee

Theses and Dissertations--Mining Engineering

To assess strategies aimed at minimizing the release of trace elements and the impact of disposal of coal waste materials on the environment, two long-term leaching experiments of up to five months duration were performed using waste materials from two plants cleaning high and low sulfur bituminous coal. The tests evaluated the mobility of major trace elements under different disposal scenarios: (i) a static leaching test designed to simulate the quiescent conditions encountered by coal waste material stored under water in a stable impoundment, and (ii) a dynamic test to simulate waste materials exposed to the atmosphere, either in variable ...


The Simulation Of Material Types In A Western Australian Iron Deposit, Jacqueline Ferreira 2012 Edith Cowan University

The Simulation Of Material Types In A Western Australian Iron Deposit, Jacqueline Ferreira

Theses: Doctorates and Masters

Geostatistical methods are currently used by mining companies to determine a resource model of the tonnage and head grade that may be obtained from a potential orebody, making it one of the first and most vital operational stages in any mining project. Currently long term mine planning is based on the estimated head grades model, which provides vital information on the quality of the ore. The risks associated with mining a particular ore may be reduced if geometallurgical information, such as material types, is incorporated into the operational flow model. Material type proportions are obtained from evaluated reverse circulation (RC ...


Geostatistical Methods For Estimating Iron, Silica And Alumina Grades Within The Hardcap Of The Section Seven Iron Deposit, Tom Price, Philip John Savory 2012 Edith Cowan University

Geostatistical Methods For Estimating Iron, Silica And Alumina Grades Within The Hardcap Of The Section Seven Iron Deposit, Tom Price, Philip John Savory

Theses: Doctorates and Masters

Many iron ore deposits have a weathered zone (Hardcap) near the surface which is highly variable in grades. Estimating the amount of ore grade material (HG) in this zone is difficult as a result of this variability. The Section Seven Deposit at Tom Price is largely mined out and has production data available in the form of grade blocks that were marked out during mining as HG and non- HG. Hardcap domains and a block model representing them were created and estimates were made from original exploration data using Ordinary Kriging, Global Change of Support, Indicator Kriging and Median Indicator ...


The Psychological Wellbeing Of Women Operating Mining Machinery In A Fly-In Fly-Out Capacity., Anne Bailey-Kruger 2012 Edith Cowan University

The Psychological Wellbeing Of Women Operating Mining Machinery In A Fly-In Fly-Out Capacity., Anne Bailey-Kruger

Theses: Doctorates and Masters

The present study aimed to address the gap in the current mining research by investigating women’s experiences of working in the mining industry in a “bluecollar” work role and the impact of fly-in fly-out (FIFO) mining on their wellbeing. An Interpretative Phenomenological Approach (IPA) was used as a framework to explore the experiences of 19 female machine operators through in-depth interviewing at one mineral mine site in Queensland, Australia. IPA analysis revealed three themes as identified by the participants. The first theme described how workplace barriers to job progression were salient issues for the women, particularly in respect to ...


Digital Commons powered by bepress