Longwall Mining 3rd Edition

Longwall Mining  3rd Edition
Author: Syd S. Peng
Publsiher: CRC Press
Total Pages: 546
Release: 2019-10-29
ISBN: 0429522193
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Longwall Mining 3rd Edition Book Excerpt:

In the past 13 years since the publication of Longwall Mining, 2nd edition in 2006, although there have been no major changes in longwall mining technology and operations, many incremental developments in the whole system as well as various subsystems of the existing longwall mining operational technologies as detailed in the 2nd edition have been added to this edition. Major developments are automation, and health and safety technology, as well as equipment reliability, thereby greatly increasing productivity and cutting cost. In particular, the longwall system can now run automatically cut by cut forever without operators' intervention provided that the geology allows it. Other health and safety features such as LASC, personal proximity detection, color lighting, automatic shield water sprays and remote shearer control are fully operational. There are more than 7000 sensors installed in current longwall mining systems. The big data obtained and fast communication technology have been fully utilized to improve and solve operational problems in real time. Those features are fully documented in the new edition. In pursuit of high productivity and cutting cost, life cycle management that increases equipment reliability has been implemented by OEM. Automation improvement such as tail-end automatic chain tensioner greatly extends AFC chain's service life. Other incremental improvements including dust and methane controls, entry development, panel design and face move are addressed. Additional operational issues such as extension of panel width and compatibility test are also discussed. Since the last plow longwall mine was closed in 2018, the chapter on plow longwalling has been dropped and in its place Automation of Longwall Components and System is added. Also, a new chapter Longwall Top Coal Caving Mining (LTCC) is added due to its successful application in Australia since 2005. Longwall Mining, 3rd edition will be of interest to professionals and academics in the field of mining engineering specifically, serving both as a reference work and an (under)graduate textbook, but will also interest civil, geomechanical and geological engineers and rock mechanics professionals, as well as coal operators, mining consultants, researchers, equipment manufacturers, and government regulators.

SME Mining Engineering Handbook Third Edition

SME Mining Engineering Handbook  Third Edition
Author: Peter Darling
Publsiher: SME
Total Pages: 1840
Release: 2011
ISBN: 0873352645
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

SME Mining Engineering Handbook Third Edition Book Excerpt:

This third edition of the SME Mining Engineering Handbook reaffirms its international reputation as "the handbook of choice" for today's practicing mining engineer. It distills the body of knowledge that characterizes mining engineering as a disciplinary field and has subsequently helped to inspire and inform generations of mining professionals.Virtually all of the information is original content, representing the latest information from more than 250 internationally recognized mining industry experts. Within the handbook's 115 thought-provoking chapters are current topics relevant to today's mining professional: Analyzing how the mining and minerals industry will develop over the medium and long term--why such changes are inevitable, what this will mean in terms of challenges, and how they could be managed Explaining the mechanics associated with the multifaceted world of mine and mineral economics, from the decisions associated with how best to finance a single piece of high-value equipment to the long-term cash-flow issues associated with mine planning at a mature operation Describing the recent and ongoing technical initiatives and engineering developments in relation to robotics, automation, acid rock drainage, block caving optimization, or process dewatering methods Examining in detail the methods and equipment available to achieve efficient, predictable, and safe rock breaking, whether employing a tunnel boring machine for development work, mineral extraction using a mobile miner, or cast blasting at a surface coal operation Identifying the salient points that dictate which is the safest, most efficient, and most versatile extraction method to employ, as well as describing in detail how each alternative is engineered Discussing the impacts that social and environmental issues have on mining from the pre-exploration phase to end-of-mine issues and beyond, and how to manage these two increasingly important factors to the benefit of both the mining companies and other stakeholders

Modern American Coal Mining

Modern American Coal Mining
Author: Bise, Christopher J.
Publsiher: Society for Mining, Metallurgy, and Exploration
Total Pages: 576
Release: 2013-10-18
ISBN: 0873353528
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Modern American Coal Mining Book Excerpt:

Modern American Coal Mining: Methods and Applications covers a full range of coal mining and coal industry topics, with chapters written by leading coal mining industry professionals and academicians. Highlights from the book include coal resources and distribution, mine design, advances in strata control and power systems, improvements in surface mining, ventilation to reduce fires and explosions, drilling and blasting, staffing requirement ratios, management and preplanning, and coal preparation and reclamation. The text is enhanced with 11 case studies that are representative of underground and surface mines in the United States. Narrative descriptions and appropriate mine plans are presented, with attention given to unique features and situations that are addressed through mine design and construction. A useful glossary is included, as are many examples, figures, equations and tables, to make the text even more useful.

Mine Design Planning and Sustainable Exploitation in the Digital Age

Mine Design  Planning and Sustainable Exploitation in the Digital Age
Author: A.J.S. (Sam) Spearing,Liqiang Ma,Cong-An Ma
Publsiher: CRC Press
Total Pages: 446
Release: 2022-09-19
ISBN: 1000630706
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Mine Design Planning and Sustainable Exploitation in the Digital Age Book Excerpt:

Mine Design, Planning and Sustainable Exploitation in the Digital Age covers mine planning, design and exploitation taking cognizance of new developments, especially those associated with the Fourth Industrial Revolution and the positive influence that it has, and will have, on the mining industry. It refers to latest best practices with emphasis on the social license to operate and sustainable (green) mining. The book covers surface and underground mining in some detail and addresses relevant associated aspects such as risk management, green mining and the importance of real community relations. It is organized as follows: Surface Mining Underground Soft Rock Mining Underground Hard Rock (Metal/Non-metal) Mining Green and Sustainable Mining It has many relevant photos and figures that help the reader and includes appropriate support design and types commonly used in the various mining methods. Mine Design, Planning and Sustainable Exploitation in the Digital Age is mainly aimed at mining, geological engineering and other undergraduate and postgraduates interested in the mining resources industry. It will also serve as a useful reference book for practitioners in the mining industry who want an easy-to-use book.

The Chemistry and Technology of Coal Third Edition

The Chemistry and Technology of Coal  Third Edition
Author: James G. Speight
Publsiher: CRC Press
Total Pages: 845
Release: 2012-09-04
ISBN: 1439836469
Category: Science
Language: EN, FR, DE, ES & NL

The Chemistry and Technology of Coal Third Edition Book Excerpt:

The demand for coal use (for electricity generation) and coal products, particularly liquid fuels and chemical feedstocks, is increasing throughout the world. Traditional markets such as North America and Europe are experiencing a steady increase in demand whereas emerging Asian markets, such as India and China, are witnessing a rapid surge in demand for clean liquid fuels. A detailed and comprehensive overview of the chemistry and technology of coal in the twenty-first century, The Chemistry and Technology of Coal, Third Edition also covers the relationship of coal industry processes with environmental regulations as well as the effects of combustion products on the atmosphere. Maintaining and enhancing the clarity of presentation that made the previous editions so popular, this book: Examines the effects of combustion products on the atmosphere Details practical elements of coal evaluation procedures Clarifies misconceptions concerning the organic structure of coal Discusses the physical, thermal, electrical, and mechanical properties of coal Analyzes the development and current status of combustion and gasification techniques In addition to two new chapters, Coal Use and the Environment and Coal and Energy Security, much of the material in this edition been rewritten to incorporate the latest developments in the coal industry. Citations from review articles, patents, other books, and technical articles with substantial introductory material are incorporated into the text for further reference. The Chemistry and Technology of Coal, Third Edition maintains its initial premise: to introduce the science of coal, beginning with its formation in the ground to the production of a wide variety of products and petrochemical intermediates in the twenty-first century. The book will prove useful for scientists and engineers already engaged in the coal and/or catalyst manufacturing industry looking for a general overview or update on the clean coal technology as well as professional researchers and students in chemistry and engineering.

Extracting Innovations

Extracting Innovations
Author: Martin J. Clifford,Robert K. Perrons,Saleem H. Ali,Tim A. Grice
Publsiher: CRC Press
Total Pages: 375
Release: 2018-06-13
ISBN: 1351582631
Category: Science
Language: EN, FR, DE, ES & NL

Extracting Innovations Book Excerpt:

This book considers the most contemporary innovations propelling the extractive industries forward while also creating new environmental and social challenges. The socio-ecological fabric of innovation in the extractive industries is considered through an integrative approach that brings together engineers, natural scientists, and social scientists—academics and practitioners—giving an empirically grounded and realistic evaluation of the innovations in this sector. It synthesizes a series of questions including: Why have these sectors been historically slow to innovate? What specific strategies can improve innovation and uptake of new technologies? What new forms of technology will shape the sector in the decades ahead? What impact will new technologies have on resource extraction and energy production? How are digital technologies changing the competitive landscape and industry architecture? How will new technologies impact sustainability of the sector and can technologies improve social performance and environmental stewardship? And more!

Encyclopedia of Organizational Knowledge Administration and Technology

Encyclopedia of Organizational Knowledge  Administration  and Technology
Author: Khosrow-Pour D.B.A., Mehdi
Publsiher: IGI Global
Total Pages: 2734
Release: 2020-09-29
ISBN: 1799834743
Category: Business & Economics
Language: EN, FR, DE, ES & NL

Encyclopedia of Organizational Knowledge Administration and Technology Book Excerpt:

For any organization to be successful, it must operate in such a manner that knowledge and information, human resources, and technology are continually taken into consideration and managed effectively. Business concepts are always present regardless of the field or industry – in education, government, healthcare, not-for-profit, engineering, hospitality/tourism, among others. Maintaining organizational awareness and a strategic frame of mind is critical to meeting goals, gaining competitive advantage, and ultimately ensuring sustainability. The Encyclopedia of Organizational Knowledge, Administration, and Technology is an inaugural five-volume publication that offers 193 completely new and previously unpublished articles authored by leading experts on the latest concepts, issues, challenges, innovations, and opportunities covering all aspects of modern organizations. Moreover, it is comprised of content that highlights major breakthroughs, discoveries, and authoritative research results as they pertain to all aspects of organizational growth and development including methodologies that can help companies thrive and analytical tools that assess an organization’s internal health and performance. Insights are offered in key topics such as organizational structure, strategic leadership, information technology management, and business analytics, among others. The knowledge compiled in this publication is designed for entrepreneurs, managers, executives, investors, economic analysts, computer engineers, software programmers, human resource departments, and other industry professionals seeking to understand the latest tools to emerge from this field and who are looking to incorporate them in their practice. Additionally, academicians, researchers, and students in fields that include but are not limited to business, management science, organizational development, entrepreneurship, sociology, corporate psychology, computer science, and information technology will benefit from the research compiled within this publication.

Foundations of Engineering Geology Third Edition

Foundations of Engineering Geology  Third Edition
Author: Tony Waltham
Publsiher: CRC Press
Total Pages: 98
Release: 2009-04-22
ISBN: 0203894537
Category: Science
Language: EN, FR, DE, ES & NL

Foundations of Engineering Geology Third Edition Book Excerpt:

Now in full colour, the third edition of this well established book provides a readable and highly illustrated overview of the aspects of geology that are most significant to civil engineers. Sections in the book include those devoted to the main rock types, weathering, ground investigation, rock mass strength, failures of old mines, subsidence on peats and clays, sinkholes on limestone and chalk, water in landslides, slope stabilization and understanding ground conditions. The roles of both natural and man-induced processes are assessed, and this understanding is developed into an appreciation of the geological environments potentially hazardous to civil engineering and construction projects. For each style of difficult ground, available techniques of site investigation and remediation are reviewed and evaluated. Each topic is presented as a double page spread with a careful mix of text and diagrams, with tabulated reference material on parameters such as bearing strength of soils and rocks. This new edition has been comprehensively updated and covers the entire spectrum of topics of interest for both students and practitioners in the field of civil engineering.

Strength Cuttability and Workability of Coal

Strength  Cuttability  and Workability of Coal
Author: Nuh Bilgin,Hanifi Copur,Cemal Balci,Deniz Tumac
Publsiher: CRC Press
Total Pages: 232
Release: 2018-12-18
ISBN: 1351183087
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Strength Cuttability and Workability of Coal Book Excerpt:

World coal production will increase up to 2040 and world energy consumption will be very much dependent on coal. For a better planning of coal mining operations, it is essential to know the strength, cuttability and workability of coal, which are interrelated. The main objective of the book is to combine the research studies and compile the book oriented to the coal industry, research students, practicing engineers, and coal mine panning teams. Key Features Covers all the subjects related to coal properties, mining and excavation in one book Presents a summary of physical and mechanical properties of coal belonging to a wide range of countries Includes typical examples of using physical and mechanical of coal in mine planning and in its industrial applications Explains use of cuttability characteristics of coal Describes planning of coal production using ploughs, shearers and surface miners

Advances in Coal Mine Ground Control

Advances in Coal Mine Ground Control
Author: Syd S. Peng
Publsiher: Woodhead Publishing
Total Pages: 462
Release: 2017-05-25
ISBN: 0081012802
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Advances in Coal Mine Ground Control Book Excerpt:

Advances in Coal Mine Ground Control is a comprehensive text covering all recent advances in coal mine ground control, the most advanced subsystem of the rapidly advancing coal mining systems. This complete resource is written by Professor Syd Peng who, alongside leading experts from the world’s major coal producing countries, has contributed extensively to the understanding of subsidence from underground coal mining, longwall operations and ground control in underground mines. Syd and the team of contributors bring together key advances from the past decade into one comprehensive resource that is accessible to all those studying, researching and working in the mining industry. This book is an essential text for undergraduate and graduate students of mining engineering and related programs, and a must-have reference for mining, civil and geotechnical engineers. Written and edited by the world’s leading experts on ground control in coal mining Covers all aspects of ground control practices in coal mines Focuses on advances over the past decade, equipping readers with the most up-to-date knowledge regarding current research and practices in the field

Proceedings of the 38th International Conference on Ground Control in Mining

Proceedings of the 38th International Conference on Ground Control in Mining
Author: Ted Klemetti,Brijes Mishra,Heather Lawson,Michael Murphy,Kyle Perry
Publsiher: Society for Mining, Metallurgy & Exploration
Total Pages: 384
Release: 2019-07-15
ISBN: 0873354729
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Proceedings of the 38th International Conference on Ground Control in Mining Book Excerpt:

Read what industry thought leaders are saying about research and advancements in ground control science. The International Conference on Ground Control in Mining has a rich history of advancing ground control techniques and knowledge. It provides a unique platform for researchers, regulators, consultants, manufacturers, and mine operators to present and exchange challenging industry topics as well as to expedite solutions to ground control problems that require immediate attention. This proceedings from the 38th International Conference is no exception. It includes 43 peer-reviewed research papers from industry experts covering topics of importance for today and the future.

Ground Engineering Principles and Practices for Underground Coal Mining

Ground Engineering   Principles and Practices for Underground Coal Mining
Author: J.M. Galvin
Publsiher: Springer
Total Pages: 684
Release: 2016-02-02
ISBN: 3319250051
Category: Science
Language: EN, FR, DE, ES & NL

Ground Engineering Principles and Practices for Underground Coal Mining Book Excerpt:

This book teaches readers ground engineering principles and related mining and risk management practices associated with underground coal mining. It establishes the basic elements of risk management and the fundamental principles of ground behaviour and then applies these to the essential building blocks of any underground coal mining system, comprising excavations, pillars, and interactions between workings. Readers will also learn about types of ground support and reinforcement systems and their operating mechanisms. These elements provide the platform whereby the principles can be applied to mining practice and risk management, directed primarily to bord and pillar mining, pillar extraction, longwall mining, sub-surface and surface subsidence, and operational hazards. The text concludes by presenting the framework of risk-based ground control management systems for achieving safe workplaces and efficient mining operations. In addition, a comprehensive reference list provides additional sources of information on the subject. Throughout, a large variety of examples show good and bad mining situations in order to demonstrate the application, or absence, of the established principles in practice. Written by an expert in underground coal mining and risk management, this book will help students and practitioners gain a deep understanding of the basic principles behind designing and conducting mining operations that are safe, efficient, and economically viable. Provides a comprehensive coverage of ground engineering principles within a risk management framework Features a large variety of examples that show good and poor mining situations in order to demonstrate the application of the established principles in practice Ideal for students and practitioners About the author Emeritus Professor Jim Galvin has a relatively unique combination of industrial, research and academic experience in the mining industry that spans specialist research and applied knowledge in ground engineering, mine management and risk management. His career encompasses directing ground engineering research groups in South Africa and Australia; practical mining experience, including active participation in the mines rescue service and responsibility for the design, operation, and management of large underground coal mines and for the consequences of loss of ground control as a mine manager; appointments as Professor and Head of the School of Mining Engineering at the University of New South Wales; and safety advisor to a number of Boards of Directors of organisations associated with mining. Awards Winner of the ACARP Excellence Research Award 2016. The Australian Coal Industry's Research Program selects recipients to receive ACARP Research and Industry Excellence Awards every two years. The recipients are selected on the recommendation of technical committees. They are honored for achievement of a considerable advance in an area of importance to the Australian coal mining industry. An important criterion is the likelihood of the results from the project being applied in mines. Winner of the Merv Harris Award from the Mine Managers Association of Australia. The Merv Harris Award is named for Merv Harris who donated money to be invested for a continuing award in 1988. With the award, the Mine Managers Association of Australia honors members of the Association who demonstrate technical achievement in the Australian Coal Mining Industry. The first award was granted in 1990, since then, only two people have received this honor. The book has received the following awards.... AGS (Australian Geomechanics Society) congratulates Dr Galvin for these awards

Proceedings of the 37th International Conference on Ground Control in Mining

Proceedings of the 37th International Conference on Ground Control in Mining
Author: Brijes Mishra,Ted Klemetti,Heather Lawson,Michael Murphy,Kyle Perry
Publsiher: Society for Mining, Metallurgy & Exploration
Total Pages: 402
Release: 2018-07-16
ISBN: 0873354680
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Proceedings of the 37th International Conference on Ground Control in Mining Book Excerpt:

The International Conference on Ground Control in Mining has a rich history of advancing ground control techniques and knowledge. It provides a unique platform for researchers, regulators, consultants, manufacturers, and mine operators to present and exchange challenging industry topics as well as to expedite solutions to ground control problems that require immediate attention. This proceedings from the 37th International Conference is no exception. It includes 47 peer-reviewed research papers from industry experts covering topics of importance for today and the future.

Subsidence Investigations Over a High extraction Retreat Mine in Williamson County Illinois

Subsidence Investigations Over a High extraction Retreat Mine in Williamson County  Illinois
Author: Anonim
Publsiher: Unknown
Total Pages: 32
Release: 1988
ISBN: 1928374650XXX
Category: Coal mines and mining
Language: EN, FR, DE, ES & NL

Subsidence Investigations Over a High extraction Retreat Mine in Williamson County Illinois Book Excerpt:

Coal Mine Ground Control

Coal Mine Ground Control
Author: Syd S. Peng
Publsiher: Society for Mining Metallurgy
Total Pages: 750
Release: 2008-01-01
ISBN: 9780978938345
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Coal Mine Ground Control Book Excerpt:

This book includes 14 chapters. It begins with the introduction of U.S. coal mining methods in chapter I. Rock properties and in-situ stresses are described in chapter two. The geological conditions that form the rock strata and their anomalies as well as the geophysical methods employed to detect the anomalies are illustrated in chapter three. Chapter four contains an exhaustive list of topics on roof bolts and roof bolting systems going back to their first introduction in the late 1940s. Chapter five covers the evolution of pillar design from 1876 to present, emphasizing the various elements affecting pillar strength and their methods of design, with information highlighted on the pros and cons of each method. Chapter six is devoted to explaining the myths of high horizontal stresses that have been commonly blamed for most roof control problems in recent years. Chapter seven is longwall mining. It contains all the elements of the subjects that I experienced in my research and consulting career. Factors affecting and mine plan designs for multiple seam mining are addressed in Chapter eight. Chapter nine deals with bumps and covers the occurrence, factors affecting, mechanisms, and control of bumps. Entry stability problems including roof and rib falls and floor heaves and their control and supporting methods are addressed in chapter ten. Chapter eleven illustrates the theories and methods of various types of underground and surface instrumentation. The various types of material models used in computer modelings and model calibration and case examples are included in chapter twelve. Surface subsidence is addressed in chapter thirteen which covers characteristics, factors, affecting, survey, prediction, and damage assessment and mitigation of surface subsidence. Highwall stability the only subject related to surface mining is covered in chapter fourteen.

2019 Rock Dynamics Summit

2019 Rock Dynamics Summit
Author: Ömer Aydan,Takashi Ito,Takafumi Seiki,Katsumi Kamemura,Naoki Iwata
Publsiher: CRC Press
Total Pages: 794
Release: 2019-07-04
ISBN: 1000566986
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

2019 Rock Dynamics Summit Book Excerpt:

Rock dynamics has become one of the most important topics in the field of rock mechanics and rock engineering, and involves a wide variety of topics, from earthquake engineering, blasting, impacts, failure of rock engineering structures as well as the occurrence and prediction of earthquakes, induced seismicity, rock bursts to non-destructive testing and explorations. Rock dynamics has wide applications in civil and infrastructural, resources and energy, geological and environmental engineering, geothermal energy, and earthquake hazard management, and has become one of the most topical areas. 2019 Rock Dynamics Summit contains 8 keynote addresses and 128 regular full papers that were presented at the 2019 Rock Dynamics Summit (2019 RDS, Okinawa, Japan, 7-11 May 2019), a specialized conference jointly organized by the Rock Dynamics Committee of the Japanese Society of Civil Engineers (JSCE-RDC), the Japanese Society for Rock Mechanics (JSRM), and which was supported by the International Society for Rock Mechanics and Rock Engineering (ISRM) and the Turkish National Society for Rock Mechanics (TNSRM). The contributions cover a wide range of topics on the dynamic behavior of rock and rock masses and scientific and engineering applications, and include: - Laboratory tests on Dynamic Responses of Rocks and Rock Masses / Fracturing of Rocks and Associated Strong Motions - Estimation Procedures and Numerical Techniques of Strong Motions Associated with the Rupture of Earth’s Crust and Some Strong Motion - Dynamic Response and Stability of Rock Foundations, Underground Excavations in Rock, Rock Slopes Dynamic Responses and Stability of Stone Masonry Historical Structures and Monuments - Induced Seismicity - Dynamic Simulation of Loading and Excavation - Blasting and machinery induced vibrations - Rockburst, Outburst, Impacts - Nondestructive Testing Using Shock Waves - Case Histories of Failure Phenomenon in Rock Engineering 2019 Rock Dynamics Summit contains the state-of-the-art in rock dynamics, and will be invaluable to professionals and academics interested in the latest advances in new techniques for experiments, analytical and numerical modelling as well as monitoring in dynamics of rocks and rock engineering structures.

Fossil Energy Update

Fossil Energy Update
Author: Anonim
Publsiher: Unknown
Total Pages: 794
Release: 1983
ISBN: 1928374650XXX
Category: Fossil fuels
Language: EN, FR, DE, ES & NL

Fossil Energy Update Book Excerpt:

Encyclopedia of Physical Sciences and Engineering Information Sources

Encyclopedia of Physical Sciences and Engineering Information Sources
Author: Steven R. Wasserman,Martin A. Smith
Publsiher: Gale / Cengage Learning
Total Pages: 736
Release: 1989
ISBN: 1928374650XXX
Category: Reference
Language: EN, FR, DE, ES & NL

Encyclopedia of Physical Sciences and Engineering Information Sources Book Excerpt:

Man induced Land Subsidence

Man induced Land Subsidence
Author: Thomas L. Holzer
Publsiher: Geological Society of America
Total Pages: 221
Release: 1984
ISBN: 0813741068
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Man induced Land Subsidence Book Excerpt:

International Land Reclamation and Mine Drainage Conference and Third International Conference on the Abatement of Acidic Drainage Abandoned mine lands and topical issues

International Land Reclamation and Mine Drainage Conference and Third International Conference on the Abatement of Acidic Drainage  Abandoned mine lands and topical issues
Author: Anonim
Publsiher: Unknown
Total Pages: 135
Release: 1994
ISBN: 1928374650XXX
Category: Mine drainage
Language: EN, FR, DE, ES & NL

International Land Reclamation and Mine Drainage Conference and Third International Conference on the Abatement of Acidic Drainage Abandoned mine lands and topical issues Book Excerpt: