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Karst Paleo-Collapses And Their Impacts On Mining And The Environment In Northern China, Gongyu Li, Wanfang Zhou 2015 Xi’an Research Institute of China Coal Technology & Engineering Group Corp

Karst Paleo-Collapses And Their Impacts On Mining And The Environment In Northern China, Gongyu Li, Wanfang Zhou

Sinkhole Conference 2015

Karst paleo-collapses are unique collapse structures widely found in the coal measures of northern China. Their geometric dimensions and internal properties indicate that a compound dissolution of carbonate and gypsum rocks may contribute to their formation. When these collapses are permeable to groundwater flow, they hydraulically connect the coal seams and the karst aquifers, which is a pre-requisite for water inrushes during coal mining. Over the last 40 years, water inrushes through these collapses have caused fatalities, economic losses, and degradation in the environment in northern China. Determination of locations and hydrogeological characteristics of the karst paleo-collapses are essential in ...


Active And Passive Behaviours Of Gold In Cyanide Solutions, Ahmet Deniz Bas 2015 Laval University

Active And Passive Behaviours Of Gold In Cyanide Solutions, Ahmet Deniz Bas

Ahmet Deniz Bas

No abstract provided.


All-In Sustaining Cost Analysis, Asseu Gilbert Yapo 2015 Montana Tech of the University of Montana

All-In Sustaining Cost Analysis, Asseu Gilbert Yapo

Graduate Theses & Non-Theses

Cost reporting has focused on the direct cost of mining and processing ore which was summarized in the non-GAAP cash cost developed by the Gold Institute in 1996. In 2013, a group of mining companies, working with the World Gold Council, developed a more inclusive approach to reporting costs designed to solve the dilemma of showing a more comprehensive reflection of recurring costs involved in producing gold, without discouraging investors.


Review Of Sampling And Evaluation Techniques For Diesel Exhaust Particulate Matter In The Mining Industry And The Application Of A Vapor Phase Organic Carbon Correction Factor, Ryley Bosch 2015 Montana Tech of the University of Montana

Review Of Sampling And Evaluation Techniques For Diesel Exhaust Particulate Matter In The Mining Industry And The Application Of A Vapor Phase Organic Carbon Correction Factor, Ryley Bosch

Graduate Theses & Non-Theses

The health effects associated with diesel exhaust exposure have been documented for decades. However, methods used to assess diesel exhaust have experienced considerable revision over the past twenty years. The latest sampling methodology considers particulate matter elemental carbon (EC) and organic carbon (OC) analysis along with the vapor phase OC analysis. The objective of this study was to evaluate the influence of vapor phase OC on the current National Institute for Occupational Safety and Health (NIOSH) method 5040 sampling and evaluation techniques for diesel exhaust particulate matter.

A pilot study was conducted as part of a larger study evaluation biodiesel ...


Iron Pigments Through The Ages, Fathi Habashi 2015 Laval University, Quebec City, Canada

Iron Pigments Through The Ages, Fathi Habashi

Fathi Habashi

Naturally occurring iron oxides were used since ancient times as ochre yellow and red pigments. It was only in the 18th century that artificially prepared Prussian blue was discovered. This discovery opened up a new field of chemistry - - cyano compounds.


Mining And Civilization, Fathi Habashi 2015 Laval University, Quebec City, Canada

Mining And Civilization, Fathi Habashi

Fathi Habashi

Ancient ruins or an ancient stone statue recalls the work of miners who brought the material from a quarry so that the sculptor can create a work of art. Carving of massive stone blocks and piercing tunnels in mountains are arts in which the same tools of mining are used and mining engineers are involved. Studying history of mining necessitates also the study of archaeology, art, architecture, and world history in general since it is the history of civilization. The pyramids of Egypt, the gold of Tut Ankh Amoun, the Coloseum in Rome, the Taj Mahal in Agra, and the ...


Optimization Of The Quantity Of Heated/Refrigerated Air Required For Ventilating Underground Mines With Ventilation-On-Request Systems, Samuel C. Wiley 2015 Montana Tech of the University of Montana

Optimization Of The Quantity Of Heated/Refrigerated Air Required For Ventilating Underground Mines With Ventilation-On-Request Systems, Samuel C. Wiley

Graduate Theses & Non-Theses

Development of deeper and more complex orebodies has increased the demand for efficient use of the air ventilating underground mining operations. Deeper and heavily mechanized operations present increasing difficulty for maintaining the air temperatures encountered by personnel, which must be removed to ensure their safety and health. The efficient use of air is made possible by the implementation of Ventilation-on-Request (VOR) systems. However, reductions in the quantity of air supplied by VOR may reduce the quantity below that which is necessary for effective heat exchange.

The objective of this thesis is to develop a heat simulation program that will determine ...


Responses Of Ka’Oje Metallurgical Manganese Ore To Gravity Concentration Techniques, R. A. Muriana 2015 Federal University of Technology, Minna, Nigeria

Responses Of Ka’Oje Metallurgical Manganese Ore To Gravity Concentration Techniques, R. A. Muriana

Innovative Research Publications IRP India

Metallurgical manganese ore samples from Ka’oje (Nigeria) were enriched to higher Metallurgical grades during wet gravity separation techniques which included Jigging and Tabling operations. As-mined samples S1 (36.83%MnO), S2 (47.85%MnO), S3 (58.85%MnO) and S4 (54.96%MnO) were dressed and screened to -780+500 μm, -500+355μm, -355+250 μm, -250+192 μm and -192 μm particle size ranges. Obtained Jigging test concentrates assayed 51.54% MnO minimum recovery level with an enrichment ratio (ER) of 1.02; while Tabling operation concentrates assayed 91.11% MnO maximum recovery and 1.14 ER value ...


Quantitative Correlation Of Rainfall And Earth Surface Displacements For Slope Stability Studies, Chrysanthos Steiakakis, Evangelia Apostolou, Georgia Papavgeri, Zacharias Agioutantis, Achilleas Tripolitsiotis 2015 General Consulting Ltd. ISTRA, Greece

Quantitative Correlation Of Rainfall And Earth Surface Displacements For Slope Stability Studies, Chrysanthos Steiakakis, Evangelia Apostolou, Georgia Papavgeri, Zacharias Agioutantis, Achilleas Tripolitsiotis

Mining Engineering Faculty Publications

It is common sense that the possibility of a rockfall increases after an intense rainfall and it is well documented that rainfalls accelerate earth surface displacements such as landslides and rockfalls. This qualitative correlation is highly affected by the geology and climate condition of the area under consideration. The research project entitled "Development of an integrated system for rockfall identification in highways", funded by the Operational Program Competitiveness and Entrepreneurship (co-funded by the European Regional Development Fund (ERDF)) aims to develop an operational system for early warning of rockfalls that occur along transportation corridors. To accomplish this goal the influence ...


Tehran Subway Tunnel Settlement Analysis By Using Analytical, Experimental And Numerical Methods (Case Study: Station Of Imam Ali University), Innovative Research Publications IRP India, Javad Sadeghi, Hadi Hamidian Shourmasti 2015 Innovative Research Publications

Tehran Subway Tunnel Settlement Analysis By Using Analytical, Experimental And Numerical Methods (Case Study: Station Of Imam Ali University), Innovative Research Publications Irp India, Javad Sadeghi, Hadi Hamidian Shourmasti

Innovative Research Publications IRP India

In The recent decades, the use of underground spaces including tunnels, railway, subway, cavern, underground spaces and others had great growth. Geological and geotechnical site conditions vary in different projects, requires different design, calculation and implementation methods also requires that the past experience and scientific and technical principles consistently applied. In this article we have tried to use the method of analytical, numerical and experimental investigation of the subway tunnel subsidence station of Imam Ali university


An Evaluation Of Carbon Concentrations Associted With Biodiesel Particulate Matter In An Underground Metal Mine, David Evans 2015 Montana Tech of the University of Montana

An Evaluation Of Carbon Concentrations Associted With Biodiesel Particulate Matter In An Underground Metal Mine, David Evans

Graduate Theses & Non-Theses

Exposure to diesel particulate matter from diesel exhaust has been shown to have adverse health effects in humans. In 2012 The International Agency for Research on Cancer classified diesel exhaust as a group 1 know human carcinogen. Because of the associated health effects, there has been a strong push to reduce the amount of diesel exhaust present in the mining industry. Biodiesel is one to the more common and promising control options used to reduce the amount of diesel particulate matter that is generated during fuel combustion. The use of biodiesel over petroleum diesel has been shown to reduce not ...


Value Addition In Packaging : Delight To The Industry, Innovative Research Publications IRP India, Goyat Arohit, Department of Printing Technology, GJUS&T, Hisar (Haryana) 2015 Innovative Research Publications

Value Addition In Packaging : Delight To The Industry, Innovative Research Publications Irp India, Goyat Arohit, Department Of Printing Technology, Gjus&T, Hisar (Haryana)

Innovative Research Publications IRP India

Earlier packaging was done just to deliver the product safely from producer to consumer. But, now packaging is done to delight the consumer as most consumers judge product by its packaging before buying. In today’s scenario many companies are launching similar products. To compete in the market some value addition features are added to a package for brand identification & sale promotions. This project is about to study the various aspects & techniques to add value to a package.


Söyleşi- Rauf H Eric, Güney Afrika'da Madencilik Ve Metal Kazanımı (Interview With Rauf H Eric, Mining And Metal Extraction In South Africa), Ahmet Deniz Bas 2015 Laval University

Söyleşi- Rauf H Eric, Güney Afrika'da Madencilik Ve Metal Kazanımı (Interview With Rauf H Eric, Mining And Metal Extraction In South Africa), Ahmet Deniz Bas

Ahmet Deniz Bas

No abstract provided.


Management Challenges In Nurturing A Safe Work Environment, T. W. Camm 2015 Montana Tech

Management Challenges In Nurturing A Safe Work Environment, T. W. Camm

Mining Engineering

As engineers, we are trained to use logical, rational problem solving to insure our mines operate at maximum efficiency. We tend to use the same technical approach to design safety into all mining systems. This works well for machines, but not so much for the human component. Recent insights in the field of behavioral economics provide useful ideas for addressing the fact that we are driven by emotions more often than by rational thought. Understanding the nonrational aspect of human behavior is an important piece of any safety system design.


Kanada'da Madencilik Ve Metal Kazanımı (Mining And Metal Extraction In Canada), Ahmet Deniz Bas 2015 Laval University

Kanada'da Madencilik Ve Metal Kazanımı (Mining And Metal Extraction In Canada), Ahmet Deniz Bas

Ahmet Deniz Bas

No abstract provided.


The Dispersion And Selective Flocculation Of Hematite Ore, Howard James Haselhuhn III 2015 Michigan Technological University

The Dispersion And Selective Flocculation Of Hematite Ore, Howard James Haselhuhn Iii

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

Iron ore is one of the most important ores in the world. Over the past century, most mining of iron ore has been focused on magnetite (Fe3O4). As the name suggests, magnetite is magnetic in nature and is easily separated from gangue (unwanted) minerals through magnetic separation processes. Unfortunately, the magnetite ore bodies are diminishing. Because of this, there has been a recent drive to pursue technology that can economically separate hematite (Fe2O3) from its gangue minerals as hematite is a much more abundant source of iron. Most hematite ore has a very small liberation size that is frequently less ...


A Novel Powder Factor Based Bench Blast Design Method For Large Surface Coal Mines, Andrew Clifford Blair 2015 Missouri University of Science and Technology

A Novel Powder Factor Based Bench Blast Design Method For Large Surface Coal Mines, Andrew Clifford Blair

Doctoral Dissertations

"Large surface coal mines in Wyoming's Powder River Basin ship millions of tons of coal per annum, moving millions of cubic yards of overburden to mine the coal. Much of this volume is blasted in the form of benches, a common mining technique. Increases in production and scale of equipment in the past thirty-five years have created a paradigm shift for drill and blast personnel at these large surface mines, and the explosives industry has yet to create a blast design method specifically tailored for large surface coal mine bench blasting.

This research examines the typical scale of bench ...


The Relative Effect Of Charge Dimensions On Elastic Vibration Attenuation And Blast-Induced Seismic Energy Concepts, Nathan Thomas Rouse 2015 Missouri University of Science and Technology

The Relative Effect Of Charge Dimensions On Elastic Vibration Attenuation And Blast-Induced Seismic Energy Concepts, Nathan Thomas Rouse

Doctoral Dissertations

"This dissertation focuses on expanding the blasting industry's current understanding of the effect of charge geometry on blast vibration attenuation. The work includes a multiple regression analysis of a sample population of signature hole blast vibration data. The regression analysis is used to identify the relative effect of the variables that affect blast vibrations at various distances from the charge. The study suggests that the most common vibration models used in the blasting industry do not use all of the statistically significant variables. Therefore, the models neglect to fully describe the relationship between the significant variables and the blast ...


Describing Local Community Acceptance With Discrete Choice Theory For Enhanced Community Engagement, Sisi Que 2015 Missouri University of Science and Technology

Describing Local Community Acceptance With Discrete Choice Theory For Enhanced Community Engagement, Sisi Que

Doctoral Dissertations

This research sought to facilitate improved community (stakeholder) analysis by providing further insight on the determinants of local community acceptance using discrete choice theory. Specifically, the goals were to: (1) Identify, classify, and verify the important project characteristics and key demographic factors which affect local community acceptance of a mining project; (2) Account for the large number of relevant factors inherent in discrete choice experiments for mining community acceptance evaluation; and (3) Examine discrete choice models to select the most appropriate model for mining community consultation. The research will test the hypotheses that various discrete choice models can describe the ...


Treatment Of A Copper-Rich Gold Ore By Cyanide Leaching, Ammonia Pretreatment And Ammoniacal Cyanide Leaching, Ahmet Deniz Bas, Elif Koc, Ersin Y. Yazici, Haci Deveci 2015 Laval University

Treatment Of A Copper-Rich Gold Ore By Cyanide Leaching, Ammonia Pretreatment And Ammoniacal Cyanide Leaching, Ahmet Deniz Bas, Elif Koc, Ersin Y. Yazici, Haci Deveci

Ahmet Deniz Bas

No abstract provided.


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