DOCSLIB.ORG

Technical Sessions

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Technical Sessions TECHNICAL SESSIONS MONDAY, FEBRUARY 25 MONDAY, FEBRUARY 25 AFTERNOON AFTERNOON 1:30 PM | ROOM 113 2:00 PM | ROOM 507 Dreyer Lecture: Why Choose Bulk Material Handling: Conveyor Industrial Minerals For A Career Path Maintenance and Safety Recipient and Lecturer: Dennis P. Bryan Chair: N. Madison, Cornerstone Conveyor Engineering, Fayette, AL 2:00 PM Introduction 2:05 PM Constructing Toromoch’s 5.2 KM Conveyor through the Andes Mountains C. Torres and E. Michiels; Maccaferri Mining Solutions, Lithia, FL Constructing a 5.2 KM conveyor has many challenges, combine that with- building it at nearly 5,000m in elevation through the Andes mountains and it can be hazardous. Identifying the structure’s best travel path still required a 250m climb, a 300m decent as well as 7 horizontal turns. This path still left the conveyor exposed to falling debris and ice, the construction of a 20m reinforced slope and a tunnel to allow vehicles to cross the structure. Construction at this elevation is challenging and the weather; wind snow and rain, can be create quite a burden on the installation crews. For the safety and construction timeline experienced crews were necessary to construct various aspects of this project. This presentation will share design and con- struction details on the rockfall protection system, the MSE wall supporting this massive conveyor and the tunnel on this project. 2:25 PM Bulk Material Flowability Testing – What Is It and Why Does It Matter? C. Hartford and T. Holmes; Jenike & Johanson, San Luis Obispo, CA Bulk solids handling systems are often the weakest links in the process plant, and their performance can dictate the performance of the entire operation. Therefore, they deserve special attention. When designing a bin, hopper, transfer chute, or stockpile for a bulk material, it is critical to understand how the bulk solids will “flow” through the system. Flowability is a function of the material and the equipment handling it. A “free-flowing” material placed in poorly designed equipment may have difficulty flowing reliably. Similarly, a material that seems difficult to handle placed in the correct equipment may flow without a problem. When designing a liquids plant, the density and viscosity of a liquid is looked up or tested and used as a design parameter. With bulk solids, the design process is similar except the friction, cohesive strength, compressibility and sometimes permeability need to be measured for the material. It is important for these tests to be run at representative process conditions. Measuring flow properties and applying them correctly will reduce project risk and potentially save a significant amount of capital. 1 SME 2019 ACE | TECHNICAL PROGRAM 2:45 PM The Importance of Being Conservative with the Packing MONDAY, FEBRUARY 25 Ratio in Discrete Element Modeling to Improve the Design AFTERNOON Phase and Simulated Behavior of Transfer Chutes J. Amoroso; Overland Conveyor Co., Lakewood, CO Using discrete element modeling to simulate transfer chutes is an important 2:00 PM | ROOM 711 step towards designing a well-engineered transfer chute. It is beneficial to visualize the material flow through the transfer chutes before fabrication and without building a full scale model. The difficulty with discrete element mod- Coal & Energy: Best of Ground Control eling is understanding what parameters and values to use for the simulated material in order to match the onsite material as close as possible. Onsite tests can be performed on the material to find specific material details which Chairs: M. Murphy, National Institute for Occupational are used to optimize the discrete element modeling parameters. This paper Safety and Health, Pittsburgh, PA will explain how the packing ratio affects other parameters due to the change B. MISHRA, West Virginia University, in particle density. Once the other parameters are adjusted to match the onsite material details, the packing ratio may need to be revised as a result Morgantown, WV of how the simulated material settles. The revolving nature of modifying the packing ratio along with other parameters will be discussed concluding in a conservative packing ratio, not only for simulating material behavior but as a 2:00 PM best practice for designing transfer chutes. Introduction 3:05 PM 2:05 PM Maximizing Conveyor System Efficiency with New Drum Analysis of Coal Pillar Stability (ACPS): A New Generation of Motor Technology Pillar Design Software A. Kanaris; Engineering, Van der Graaf, Shelby Township, MI Z. Agioutantis1 and C. Mark2; 1University of Kentucky, Lexington, KY and 2 Conveyors powered by external motors and gearboxes, along with v-belts, Mine Safety and Health Administration, Pittsburgh, PA chains, couplings & pillow block bearings, often operate with relatively low Thirty years ago, the Analysis of Longwall Pillar Stability (ALPS) inaugurated a efficiency and require regular maintenance. With rising electrical and labor new era in coal pillar design. ALPS was the first empirical pillar design tech- costs, mining & aggregate industries are forced to evaluate ways to minimize nique to consider the abutment loads that arise from full extraction, and the downtime, reduce maintenance costs, increase worker safety and ultimate- first to be calibrated using an extensive database of mining case histories. ly increase profits. New drum motor technology has addressed efficiency ALPS was followed by the Analysis of Retreat Mining Stability (ARMPS) and and operator safety concerns. The drum motor, an internally driven conveyor the Analysis of Multiple Seam Stability (AMSS). Today, these empirical meth- drive, eliminates external components, houses the electric motor & gearbox ods are used in nearly every underground coal mine in the US. However, the inside the drum, increases operator safety, saving space, eliminates sched- piecemeal manner in which these methods have evolved resulted in some uled maintenance, increases longevity and overall efficiency. With v-belts, weaknesses. In certain situations, it may not be obvious which program is chains and couplings no longer required, the internal drive design drum mo- the best to use. Other times the results from the different programs are not tor, has efficiency gains of up to 30% and lower operating costs. Reliability entirely consistent with each other. The Analysis of Coal Pillar Stability (ACPS) & longevity of conveyor drives pose challenges for belt conveyors to operate integrates all three of the older software packages into a single pillar design in harsh & abrasive environments and failure is ground zero for loss of pro- framework. ACPS also incorporates the latest research findings in the field duction. The latest Van der Graaf GrizzlyDrive™ drum motor with IronGrip of pillar design, including an expanded multiple seam case history data base lagging, is developed specifically to operate in these extreme environments. and a new method to evaluate room and pillar panels containing multiple rows of pillars left in place during pillar recovery. 3:25 PM The Different Types of Conveyor Belts Used in Mining 2:25 PM L. Hoggan; Rema Tip Top, Oregon City, OR The Limitations and Potential Design Risks When Mining is a broad term that captures a lot of different products and process- Applying Empirically-Derived Coal Pillar Strength es for extracting the earth’s minerals. There is not just one type of convey- Equations to Real-Life Mine Stability Problems or belt that works well in all mining applications. Learn about the different R. Frith and G. Reed; Mine Advice Pty Ltd, Beresfield, NSW, Australia rubber compounds, types of conveyor belt construction and configurations The paper explores the reasons as to why empirically-derived coal pillar that impact the life, capacity and functionality of conveyor belts around the strength equations tend to be problem-specific, and so should perhaps be mining site. You’ll walk away understanding the terminology and differenc- considered as providing no more than a pillar strength “index”. These include es in specifications, ensuring that you have the knowledge to ask the right the non-consideration of overburden horizontal stress within the mine stabil- questions and make the right purchasing decisions. ity problem, an inadequate definition of super-critical overburden behaviour as it applies to coal pillar loading and the non-consideration of overburden displacement and coal pillar strain limits, all of which combine to potentially complicate and so confuse the back-analysis of coal pillar strength from failed cases. A modified coal pillar design representation and model is pre- sented based on coal pillars acting to reinforce a horizontally-stressed over- burden, rather than suspend an otherwise unstable self-loaded overburden or section thereof, the latter having been at the core of historical empirical studies into coal pillar strength and stability. 2 SME 2019 ACE | TECHNICAL PROGRAM 2:45 PM 3:45 PM What Factors Over and Above Those Included in the Existing Challenges of Mining the First Right-Handed Longwall in Coal Mine Roof Rating (CMRR) Could Also Be Predictive of Pittsburgh Seam Roof Instability in Underground Coal Mines? J. Lu and G. Hasenfus; CONSOL Energy Inc., Southpointe, PA M. Young, E. Holley and G. Walton; Colorado School of Mines, Golden, CO In this presentation, the mining experience and challenges for the first The coal mine roof rating (CMRR) was developed by NIOSH to bridge the gap right-handed longwall panel in the Pittsburgh seam was introduced. The between geological variation in underground coal mines and engineering longwall headgate T-junction experienced very high face convergence (up to design. The CMRR has been widely used and validated in Eastern US coal 2 feet), accompanied by roof sag, floor heave, and rib loading. The headgate mines, but has seen limited application in the Western US. This study focuses convergence was so large that in a few places it threatened longwall retreat, on roof behavior at two Western coal mines. The first mine presents laterally and ultimately required the bottom to be re graded.
Load more

Recommended publications
  • Annual Information Form for the Year Ended December 31, 2018 Dated As of March 22, 2019 BARRICK GOLD CORPORATION
    Barrick Gold Corporation Brookfield Place, TD Canada Trust Tower Suite 3700, 161 Bay Street, P.O. Box 212 Toronto, ON M5J 2S1 Annual Information Form For the year ended December 31, 2018 Dated as of March 22, 2019 BARRICK GOLD CORPORATION ANNUAL INFORMATION FORM TABLE OF CONTENTS GLOSSARY OF TECHNICAL AND BUSINESS TERMS 4 REPORTING CURRENCY, FINANCIAL AND RESERVE INFORMATION 10 FORWARD-LOOKING INFORMATION 11 SCIENTIFIC AND TECHNICAL INFORMATION 14 THIRD PARTY DATA 15 GENERAL INFORMATION 15 Organizational Structure 15 Subsidiaries 16 Areas of Interest 18 General Development of the Business 18 History 18 Significant Acquisitions 18 Strategy 19 Recent Developments 21 Results of Operations in 2018 22 NARRATIVE DESCRIPTION OF THE BUSINESS 26 Production and Guidance 26 Reportable Operating Segments 26 Barrick Nevada 27 Pueblo Viejo (60% basis) 28 Lagunas Norte 29 Veladero (50% basis) 29 Turquoise Ridge (75% basis) 30 Acacia Mining plc (63.9% basis) 31 Pascua-Lama Project 32 Mineral Reserves and Mineral Resources 33 Marketing and Distribution 46 Employees and Labor Relations 47 Competition 48 Sustainability 48 Operations in Emerging Markets: Corporate Governance and Internal Controls 49 Board and Management Experience and Oversight 50 Communications 51 - i - Internal Controls and Cash Management Practices 51 Managing Cultural Differences 52 Books and Records 52 MATERIAL PROPERTIES 52 Cortez Property 52 Goldstrike Property 58 Turquoise Ridge Mine 63 Pueblo Viejo Mine 69 Veladero Mine 76 Kibali Mine 86 Loulo-Gounkoto Mine Complex 93 EXPLORATION
    [Show full text]
  • Annual Reportannual 2016 Barrick Goldbarrick Corporation of Owners Of
    Barrick Gold Corporation Annual Report 2016 Barrick Gold Corporation A Company of Owners Annual Report 2016 Our Vision is the generation of wealth through responsible mining – wealth for our owners, our people, and the countries and communities with which we partner. We aim to be the leading mining company focused on gold, growing our cash flow per share by developing and operating high-quality assets through disciplined allocation of human and financial capital and operational excellence. “ In 2016, we further strengthened our balance sheet and generated record free cash flow through a disciplined and rigorous approach to capital allocation. Going forward, digital technology and innovation will play an increasingly important role across our business as we seek to grow the long-term value of our portfolio with a focus on growing margins and returns over production volume.”Kelvin Dushnisky, President Our Assets are located in geopolitically stable regions with an increasing focus on our five core mines in the Americas. Proven and Probable Mineral Reserves6 As at Production Cost of Sales AISC1† Tonnes Grade Contained Golden Sunlight Hemlo December 31, 2016 (000s ozs) ($/oz) ($/oz) (000s ozs) (gm/t) (000s ozs) Turquoise Ridge JV Goldstrike 20% Cortez Goldstrike 1,096 852 714 70,685 3.55 8,077 19% ~70% of 2016 production Cortez 1,059 901 518 151,002 2.11 10,220 Pueblo Viejo 13% from core mines at Cost of Sales$793/oz Pueblo Viejo (60%) 700 564 490 85,821 2.93 8,087 1 8% and AISC $606/oz Lagunas Norte Lagunas Norte 435 651 529 70,670 1.86 4,218 Other Gold Mines: Porgera JV, Papua New Guinea Veladero 544 872 769 252,125 0.83 6,749 Kalgoorlie JV, Australia Acacia, Tanzania Other Copper Mines: Core mines sub-total 3,834 793 606 631,283 1.85 37,473 Zaldívar Copper JV 10% Jabal Sayid JV, Saudi Arabia Veladero Lumwana, Zambia Total Barrick 5,517 798 730 2,006,898 1.33 85,950 †Please see page 84 of the 2016 Financial Report for corresponding endnotes.
    [Show full text]
  • Carlin-Type Gold Deposits in Nevada: Critical Geologic Characteristics and Viable Models
    ©2005 Society of Economic Geologists, Inc. Economic Geology 100th Anniversary Volume pp. 451–484 Carlin-Type Gold Deposits in Nevada: Critical Geologic Characteristics and Viable Models JEAN S. CLINE,† University of Nevada, Las Vegas, 4505 Maryland Parkway, Box 454010, Las Vegas, Nevada 89154-4010 ALBERT H. HOFSTRA, Mineral Resources Program, U.S. Geological Survey, Mail Stop 973, Box 25046, Denver, Colorado 80225 JOHN L. MUNTEAN, Nevada Bureau of Mines and Geology, Mail Stop 178, University of Nevada, Reno, Nevada 89557-0088 RICHARD M. TOSDAL, AND KENNETH A. HICKEY Mineral Deposit Research Unit, University of British Columbia, 6339 Stores Road, Vancouver, British Columbia, Canada V6T 1Z4 Abstract Carlin-type Au deposits in Nevada have huge Au endowments that have made the state, and the United States, one of the leading Au producers in the world. Forty years of mining and numerous studies have pro- vided a detailed geologic picture of the deposits, yet a comprehensive and widely accepted genetic model re- mains elusive. The genesis of the deposits has been difficult to determine owing to difficulties in identifying and analyzing the fine-grained, volumetrically minor, and common ore and gangue minerals, and because of postore weathering and oxidation. In addition, other approximately contemporaneous precious metal deposits have overprinted, or are overprinted by, Carlin-type mineralization. Recent geochronological studies have led to a consensus that the Nevada deposits formed ~42 to 36 m.y. ago, and the deposits can now be evaluated in the context of their tectonic setting. Continental rifting and deposi- tion of a passive margin sequence followed by compressional orogenies established a premineral architecture of steeply dipping fluid conduits, shallow, low dipping “traps” and reactive calcareous host rocks.
    [Show full text]
  • Responsible Mining
    Responsibility Report 2013 Responsible Mining Barrick Gold Corporation is the world’s leading gold producer with a portfolio of 25 owned and operated mines and development projects in five continents. Barrick Responsibility Report 2013 Contents Section 1 2013 Overview 03 About Barrick 08 Responsible Mining 09 CEO Letter Section 2 Material Issues 12 Material Issues Performance Summary 26 Social and Economic Development 15 Materiality Process 31 Workplace Safety 17 Anti-Corruption and Transparency 36 Water Management 20 Human Rights 39 Energy Use and Climate Change 23 Community Engagement 43 Biodiversity Section 3 Additional Information Governance Employees 46 Governance Structure 86 Employees and Human Rights 50 Our Strategy and Management Approach 89 Employee Development 55 Our Stakeholders 92 Occupational Health and Wellness 56 External Commitments 95 Labour Organizations 59 Government Affairs 96 Emergency Response 60 Security and the Voluntary Principles 97 Employee Awards 62 Supply Chain Society 64 Products 98 Community Safety and Security 65 Independent Assurance 100 Indigenous Peoples 68 Significant Issues in 2013 107 Resettlement Environment 108 Artisanal Mining 72 Environmental and Social Impact Assessment 74 Waste and Materials 78 Mine Closure 80 Land and Wildlife Management 83 Energy Profile 84 Air Emissions Section 4 Data Tables 110 Environment 129 Safety and Health 132 Community 135 Employees Section 5 GRI Index 142 GRI Index Section 1: 2013 Overview Barrick Responsibility Report 2013 01 Section 1 2013 Overview 03 About Barrick 08 Responsible Mining 09 CEO Letter 02 Barrick Responsibility Report 2013 Section 1: 2013 Overview About Barrick Barrick is committed to leadership in responsibility reporting, because it gives our stakeholders transparent, comparable, and externally assured information on our commitment to, and progress on, mining responsibly.
    [Show full text]
  • 2004 Annual Report
    BARRICK GOLD CORPORATION BARRICK Annual Report Annual 2004 2004 Annual Report Annual Barrick is one of the world’s largest gold mining companies, with operating and development properties in the US, Canada, Australia, Peru, Chile, Argentina and Tanzania. What’s next: Growth. Our vision is to be the world’s best gold mining company Building Mines. Building Value. by fi nding, developing and producing quality reserves in a profi table and socially responsible manner. Barrick shares are traded on the Toronto, New York, London and Swiss stock exchanges and the Paris Bourse. You can contact us toll-free within Canada and the United States: 800-720-7415 email us at: [email protected] BARRICK GOLD BARRICK visit our investor relations website: www.barrick.com TT39748-BAR39748-BAR CoverCover andand Spine.inddSpine.indd 1 33/16/05/16/05 11:01:59:01:59 PMPM Delivering Growth. Building Mines Ltd. ada, Barrick’s pipeline of gold development projects is unrivaled in size, quality, and immediacy. Three new mines will be in production in 2005, Cannting: of Bowne another in early 2006, with two more to follow in subsequent years. Forward-Looking Statements Certain information contained or incorporated by reference in this Annual Report 2004, including any information as to our future financial or operating performance, constitutes “forward-looking statements”. All statements, Building Value other than statements of historical fact, are forward-looking statements. The words “believe”, “expect”, “anticipate”, “contemplate”, “target”, “plan”, “intends”, “continue”, “budget”, “estimate”, “may”, “will”, “schedule” and similar expressions identify forward-looking statements. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable by us, are Barrick is targeting a 12% compound annual growth rate in inherently subject to significant business, economic and competitive uncertainties and contingencies.
    [Show full text]
  • Geology, Geochemistry, and Geochronology of the Marigold Mine, Battle Mountain-Eureka Trend, Nevada
    GEOLOGY, GEOCHEMISTRY, AND GEOCHRONOLOGY OF THE MARIGOLD MINE, BATTLE MOUNTAIN-EUREKA TREND, NEVADA by Matthew T. Fithian ! A thesis submitted to the Faculty and the Board of Trustees of the Colorado School of Mines in partial fulfillment of the requirements for the degree of Master of Science (Geology). Golden, Colorado Date ____________________ Signed: _______________________ Matthew T. Fithian Signed: _______________________ Dr. Elizabeth A. Holley Thesis Advisor Signed: _______________________ Dr. Nigel M. Kelly Thesis Co-Advisor Golden, Colorado Date ____________________ Signed: _______________________ Dr. Paul Santi Department Head Department of Geology and Geological Engineering ! ii! ABSTRACT The Marigold mine is located on the northern end of Nevada’s Battle Mountain-Eureka trend, approximately 55 km east-southeast of Winnemucca, Nevada in the Battle Mountain mining district. Marigold defines a N-S trending cluster of economic gold anomalies approximately 7 km long. Marigold has been historically described as a porphyry-related distal disseminated deposit based on the presence of porphyritic intrusions, proximity to known porphyry systems (e.g. Phoenix, Converse, Elder Creek), inferred high Ag:Au ratio, and limited understanding of sulfide mineralogy related to gold mineralization. The aim of this research was to examine the genesis of the gold mineralizing system at Marigold by determining the age of felsic porphyritic intrusions throughout the Marigold mine and the genetic relationship between these intrusions and gold mineralization. Geochronologic data were supplemented by geochemical sampling to understand the effect of the intrusions on the host rock, the effect of alteration on the intrusions, and the geochemical signature of gold ores. In addition to geochronologic and geochemical data, a secondary goal of the project was to determine the ore mineralogy below the redox boundary.
    [Show full text]
  • 2014 Responsibility Report Table of Contents
    Responsible Mining 2014 Responsibility Report Table of Contents SECTION 1 About Our Report SECTION 2 Responsible Mining SECTION 3 Community SECTION 4 Safety and Health SECTION 5 Environment SECTION 6 Employees SECTION 7 Human Rights SECTION 8 Security SECTION 9 Products SECTION 10 Assurance Statement SECTION 11 Data Tables SECTION 12 GRI Index Appendix A: SECTION 13 2014 Material Issues Report ABOUT RESPONSIBLE COMMUNITY SAFETY / ENVIRONMENT EMPLOYEES HUMAN SECURITY PRODUCTS ASSURANCE DATA GRI REPORT MINING HEALTH RIGHTS STATEMENT TABLES INDEX SECTION 1 About Our 2014 Responsibility Report Barrick reports according to the Global Reporting Initiative’s (GRI) Sustainability Reporting Guidelines, using GRI-G3, the third version of the guidelines. Our annual Responsibility Report, based on the GRI framework and Mining & Metals Supplement, can be used by us, and by our stakeholders, to benchmark our performance against others in our industry. The 2014 Responsibility Report provides information on Barrick’s management of significant issues affecting our license to operate, including environmental, work- place, and social issues. The Responsibility Report, including a small Material Issues Summary Report, is located at the Responsibility tab on the Barrick website. Both reports can be printed in PDF format. The GRI Content Index table is located on the website. We have included a reference index for the 10 Principles of the UN Global Compact and the International Council on Mining and Metals (ICMM) Sustainable Development Principles in the table.
    [Show full text]
  • GOLDSTRIKE MINING DISTRICT, Washington County, Utah
    GOLDSTRIKE MINING DISTRICT, Washington County, Utah Ronald Willden* ABSTRACT The Goldstrike mining district is located in western Washington County, about 35 miles northwest of St. George. Gold was discovered in the district sometime in the late 1800s and the area was being actively pros- pected by 1895. This early work did not lead to any significant production although a total of 40 lode claims and 1 placer claim were brought to patent as a result of the early work. The area was largely ignored until the mid-1970s when a search was begun for disseminated gold deposits of the type then being actively mined in central Nevada. This search was successful and led to the production of approximately 200,000 ounces of gold and a somewhat smaller amount of silver from 12 near-surface deposits. The bulk of the ore in eight of these deposits was found in a sandstone host rock occurring at the base of the early Tertiary Claron Formation. High-angle faults appear to have been important in localizing ore in these deposits as well as in the other four deposits, where most of the ore occurred in brecciated and silicified Paleozoic limestone units. The pre-Tertiary rocks in the district are complexly folded and faulted and record a long history of tectonic activity that culminated in extensive overthrusting of the Paleozoic rocks onto a sequence of clastic rocks of Mesozoic age. This overriding thrust is not exposed in the Goldstrike district but most likely underlies the en- tire district. Following this period of thrusting the area was nearly beveled by erosion.
    [Show full text]
  • Barrick Annual Report 2011 | 2011 Highlights
    A Symbol of Value Barrick Gold Corporation | Annual Report 2011 Record Investing in fi nancial high return resultss projects Operational excellencee Exploration success Surfacing Focus on valuee responsible p mining 2011 Highlights Record adjusted Record adjusted operating Record EBITDA Increased dividend 25% to 60¢ net earnings in 2011 cash flow in 2011 in 2011 on an annualized basis 8,376 60 4,666 5,680 5,241 48 3,517 6,521 40 2,899 1,810 3,370 0 0 0 0 2009 2010 2011 2009 2010 2011 2009 2010 2011 2009 2010 2011 ADJUSTED NET EARNINGS1 ADJUSTED OPERATING EBITDA1,4 ANNUALIZED DIVIDEND2 1 (US dollars millions) CASH FLOW (US dollars millions) (US cents per share) (US dollars millions) Replaced gold reserves, Increased copper reserves, Record gold total cash and net cash margins in 2011 grew resources in 2011 grew resources in 2011 1,239 1,118 40 37 20 32 76 80 62 935 819 9 140 140 140 9 15 13 13 521 625 13 6 7 0 0 300 200 2009 2010 2011 2009 2010 2011 2009 2010 2011 2009 2010 2011 GOLD RESERVES AND COPPER RESERVES AND TOTAL CASH MARGINS1 NET CASH MARGINS1 3 3 RESOURCES RESOURCES (US dollars per ounce) (US dollars per ounce) (Ounces millions) (Pounds billions) Inferred Resources M&I Resources 2P Reserves 2 Barrick Annual Report 2011 | 2011 Highlights Barrick delivered record fi nancial results in 2011, demonstrating exceptional leverage to the gold price. Beyond 2011, Pueblo Viejo and Pascua-Lama are scheduled to begin contributing low cost production in 2012 and 2013, respectively.
    [Show full text]
  • Technical Report on the Gold Strike Project for Pilot Gold, Inc., October 7
    MINE DEVELOPMENT ASSOCIATES MINE ENGINEERING SERVICES Technical Report on the Goldstrike Project, Washington County, Utah, U.S.A. PILOT GOLD INC. Suite 1900, 1055 West Hastings Vancouver, B.C., Canada V6E 2E9 Telephone: 604-632-4677 Report Date: October 7, 2016 Effective Date: April 1, 2016 Michael M. Gustin, C.P.G. Moira T. Smith, Ph.D., P.Geo. 775-856-5700 210 South Rock Blvd. Reno, Nevada 89502 FAX: 775-856-6053 MINE DEVELOPMENT ASSOCIATES MINE ENGINEERING SERVICES TABLE OF CONTENTS 1.0 SUMMARY .................................................................................................................................... 1 1.1 Location and Ownership ...................................................................................................... 1 1.2 Historical Mining and Environmental Liabilities ................................................................ 1 1.3 Geology and Mineralization ................................................................................................. 1 1.4 Exploration by Pilot Gold .................................................................................................... 2 1.5 Drilling and Sampling .......................................................................................................... 2 1.6 Quality Assurance/ Quality Control ..................................................................................... 3 1.7 Mineral Processing and Metallurgical Testing .................................................................... 3 1.8 Conclusions and Recommendations
    [Show full text]
  • Annual Report 2014
    www.barrick.com Barrick Gold Corporation Barrick Gold Corporation Barrick Gold Corporation Head Office: Tel: 416 861-9911 Brookfield Place Toll-free throughout North America: TD Canada Trust Tower 1 800 720-7415 Annual Report 2014 161 Bay Street, Suite 3700 Fax: 416 861-2492 P.O. Box 212 Email: [email protected] Toronto, Canada M5J 2S1 barrick.com Annual Report 2014 @barrickgold /barrick.gold.corporation FINANCIAL HIGHLIGHTS (In millions of US dollars, except per share data) 2014 2013 2012 (Based on IFRS) Revenues $ 10,239 $ 12,527 $ 14,394 Net earnings (loss) (2,907) (10,366) (538) Cautionary Statement on Forward-Looking Information per share (2.50) (10.14) (0.54) Adjusted net earnings1 793 2,569 3,954 Certain information contained or incorporated by reference mineral exploration and development; risk of loss due to acts 1 per share 0.68 2.51 3.95 in this Annual Report 2014, including any information as to of war, terrorism, sabotage and civil disturbances; fluctuations Operating cash flow 2,296 4,239 5,983 our strategy, projects, plans or future financial or operating in the currency markets; changes in U.S. dollar interest rates; Cash and equivalents 2,699 2,404 2,097 performance, constitutes “forward-looking statements”. risks arising from holding derivative instruments; litigation; All statements, other than statements of historical fact, are contests over title to properties, particularly title to undeveloped Dividends paid per share 0.20 0.50 0.75 forward-looking statements. The words “believe”, “expect”, properties, or over access to water, power and other required 2 Annualized dividend per share 0.20 0.20 0.80 “anticipate”, “contemplate”, “target”, “plan”, “intend”, infrastructure; business opportunities that may be presented to, “continue”, “budget”, “estimate”, “may”, “will”, “schedule” or pursued by, the Company; our ability to successfully integrate Gold production (000s oz) 6,249 7,166 7,421 and similar expressions identify forward-looking statements.
    [Show full text]
  • Oreshoot Zoning in the Carlin-Type Betze Orebody, Goldstrike Mine, Eureka County, Nevada
    Oreshoot Zoning in the Carlin-type Betze Orebody, Goldstrike Mine, Eureka County, Nevada By Stephen G. Peters1, Gregory C. Ferdock2, Maria B. Woitsekhowskaya1, Robert Leonardson3, and Jerry Rahn3 Open-File Report 98–620 1998 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY 1U.S. Geological Survey, Reno Field Office, Mackay School of Mines, MS-176, University of Nevada, Reno, Nevada 89557-0047 2Department of Geological Sciences, Mackay School of Mines, University of Nevada, Reno, Nevada 89557-0047 3Mine Geology Department, Barrick Goldstrike Mines, Inc., P.O. Box 29, Elko, Nevada 89803. Oreshoot Zoning in the Carlin-type Betze Orebody, Goldstrike Mine, Eureka County, Nevada by Stephen G. Peters1, Gregory C. Ferdock2, Maria B. Woitsekhowskaya1, Robert Leonardson3, and Jerry Rahn3 1U.S. Geological Survey, Reno, Nevada. 2Mackay School of Mines, University of Nevada, Reno, Nevada. 3Barrick Goldstrike Mines, Inc., Elko, Nevada Abstract Field and laboratory investigations of the giant Betze gold orebody, the largest Carlin-type deposit known, in the north-central Carlin trend, Nevada document that the orebody is composed of individual high-grade oreshoots that contain different geologic, mineralogic, and textural characteristics. The orebody is typical of many structurally controlled Carlin-type deposits, and is hosted in thin-bedded, impure carbonate or limy siltstone, breccia bodies, and intrusive or calc-silicate rock.
    [Show full text]