Integrated Report 2016 Contents

Total Page:16

File Type:pdf, Size:1020Kb

Integrated Report 2016 Contents INTEGRATED REPORT 2016 CONTENTS To create value for our shareholders, our employees and our business and social partners through safely and responsibly exploring, mining and marketing our products. Our primary focus is gold, but we will pursue value creating opportunities in other minerals OUR where we can leverage our OUR existing assets, skills and MISSION experience to enhance the VALUES delivery of value. HOW TO USE THIS REPORT This is an interactive PDF. Navigation tools at the top left of each page and within the report are indicated as follows. Interactive indicator Contents page Print Previous page Next page Undo Search Website Email Download Page reference Video INTEGRATED REPORT 2016 1 SECTION 1 OVERVIEW About our reports / 3 Directors’ statement of responsibility / 4 Corporate profile / 5 Chairman’s letter / 7 Highlights of the year / 10 CEO’s review / 11 An overarching view of our reports, the Chairman’s message to our stakeholders, the profile of the company and the year’s highlights, as well as the CEO’s account of delivery on the last year’s commitments and an outlook for the year ahead. INTEGRATED REPORT 2016 2 Picture: Kibali, DRC ABOUT OUR REPORTS AngloGold Ashanti Limited’s Notice of Annual General Meeting and SCOPE AND BOUNDARY investors. Stakeholders are also referred to (AngloGold Ashanti’s) 2016 suite Summarised Financial Information (Notice OF REPORTS the supplementary reports in this suite and the of Meeting) <NOM> is produced and posted <SDR>, in particular, for additional information. The 2016 suite of reports covers the year from of reports is made up as follows: to shareholders in line with the JSE Listings 1 January to 31 December 2016. We also report Requirements and the requirements of the As this is a group-level report, operational on any material events that have occurred from Integrated Report <IR> is the primary South African Companies Act, 71 of 2008, targets and performance are discussed at year-end to the date of the reports’ approval by document in our suite of reports and provides as amended (Companies Act). regional level rather than per individual site, the board on 22 March 2017. a concise overview and explanation of although some operational detail is provided Sustainable Development Report <SDR>, where appropriate. Detailed information, our performance in terms of our strategic The reports cover the entire company and its compiled in line with the Global Reporting including maps of our exploration activities of objectives and the related outlook for the main business units and functions, including Initiatives’ (GRI’s) latest G4 guidelines, is both our greenfields and brownfields studies, company. Both financial and non-financial our joint ventures and investments, over published together with the accompanying is available on the AngloGold Ashanti website, performance are reviewed. which we exercise control or have significant GRI scorecard and supplementary data. www.anglogoldashanti.com. influence. Performance is reported regionally, Mineral Resource and Ore Reserve in line with our corporate structure. Full Information relating to joint ventures and other Report <R&R>, presented in line with the disclosure is provided for all operations interests is provided for context and where SAMREC and JORC codes, provides detailed managed by AngloGold Ashanti. Those deemed to be material. Production and capital information on all our operations and projects. operations in which we have an ownership expenditure are expressed on an attributable interest – Kibali in the Democratic Republic basis, unless otherwise indicated. Annual Financial Statements <AFS> are of the Congo (DRC) and Morila in Mali – prepared in accordance with the International and which are managed and operated Employee data, average workforce data, Financial Reporting Standards (IFRS). by Randgold Resources Limited, our joint including employees and contractors, are venture partner in these operations, are reported for AngloGold Ashanti with joint A dedicated annual reporting website, partially reported in terms of their safety ventures reported on an attributable basis. www.aga-reports.com, hosts PDFs of the full and environmental and socio-economic Employee and workforce data reported suite of these reports to facilitate ease of access performance. There have been no significant includes both our employees and contractors. by and communication with our stakeholders. changes to the scope, boundary or All-in sustaining costs ($/oz) and all-in costs measurement methods applied in this report ($/oz) exclude stockpile write-offs. and, where restatements to comparatives have Visit our reports website: been made, these are as indicated. The intense focus on containing and www.aga-reports.com managing costs and improving margins Visit our corporate website: Although we have a diverse range of continued in 2016, as did active www.anglogoldashanti.com stakeholders, each with their own specific management of our portfolio and reducing information requirements, this report is aimed net debt levels while retaining long-term Download the full suite of reports primarily at investors, financiers and potential optionality in our portfolio. INTEGRATED REPORT 2016 3 Picture: Geita, Tanzania ABOUT OUR REPORTS (CONTINUED) In this report, we describe what we have business. The outcome of these reviews and Note: AngloGold Ashanti reports its group financial CORPORATE STATUS done to create value and to achieve our external assurances, as well as the independent information in US dollars (US$) in all its reports. Unless otherwise stated, the use of ‘$’ or ‘dollar’ DURING 2016 stated strategic objectives in the past year, technical reviews conducted, provided refers to US dollars. • Obuasi, which was impacted by the what we have used to do this, what the reasonable assurance to allow the board, on occupation of illegal miners, transitioned impact of these actions has been, the risks the recommendation of the Audit and Risk to care and maintenance affecting our ability to achieve our strategic Committee, to determine the effectiveness of the group’s system of internal controls. • The closure process at Yatela objectives, the circumstances that have affected our ability to generate value and continued and is scheduled to be The board and executive management “The content of this integrated how well we have performed towards our completed in 2021 consider the matters discussed in this report report is based on our overarching goal of creating value. • All other assets remained fully operational. to be those that most influence our ability to strategy, the primary aim of which • Disclosure in this report is limited to The material risks and issues discussed in this successfully achieve our strategic objectives, is to create value by generating continuing operations, having sold report are considered to be those most likely create value and manage the risks we face, sustainable free cash flow Cripple Creek & Victor in the United to affect the group’s sustainability. In identifying and believe that this report fairly records our States in 2015 these, we have taken into account the external performance in the past year. improvements and returns.” environment in which we operate, our current performance and feedback obtained from THIS INTEGRATED REPORT stakeholders during the year, while we have also identified opportunities for the business. In compiling this report, we have been guided DIRECTORS’ STATEMENT OF RESPONSIBILITY The report also covers the company’s tax by the International Integrated Reporting strategy, which is discussed in the Corporate Council’s (IIRC) framework on integrated The Board of Directors of AngloGold Ashanti, assisted by the Audit and Risk Committee, Governance section. Further information on reporting, the South African Companies Act is ultimately responsible for overseeing and confirming the integrity and completeness of AngloGold Ashanti’s material sustainability and JSE Listings Requirements. While we this <IR> and the entire suite of 2016 reports, with the Social, Ethics and Sustainability issues is presented in the <SDR>. are currently reporting in line with the King Committee overseeing the <SDR>. Report on Governance for South Africa 2009 (King III), we have begun to align with that APPROVALS AND ASSURANCE The board, having reviewed and applied its collective mind to the preparation and report’s successor, the Report on Corporate Several internal processes that include, among presentation of this report, declared that the Integrated Report addresses all material issues Governance for South Africa 2016 (King IV). others, management assurance and reviews and fairly presents the organisation’s integrated performance and its impacts. by internal audit of the information and data in The content of this integrated report is our reports are conducted. The board, on the recommendation of the Audit and Risk Committee, approved the based on our overarching strategy, the Integrated Report 2016 on 22 March 2017. primary aim of which is to create value Operations within AngloGold Ashanti were by generating sustainable free cash subjected to risk-based, integrated, combined Sipho M Pityana Wiseman Nkuhlu Srinivasan Venkatakrishnan Christine Ramon flow improvements and returns from our assurance reviews focusing on commercial, Chairman Deputy Chairman Chief Executive Officer Chief Financial Officer exploration, mining and processing activities. safety and sustainability aspects of the INTEGRATED REPORT 2016 4 CORPORATE PROFILE
Recommended publications
  • Report for the Quarter Ended 31 March 2014
    Report for the quarter ended 31 March 2014 Production 1.06Moz improving 17% yeara -on-year and well ahead of 950Koz–1Moz guidance Total cash costs decrease 14% year-on-year to $770/ooz, beating guidance of $800/oz-$850/oz All-in-sustaining cost (AISC) decreased by 22% year-on-year to $993/oz on lower capex, cash costs and overhead costs Adjusted headline earnings $119m, or 29 US cents per share International operations see 34% rise in output to 765,000oz year-on-year, and 22% drop in AISC to $972/oz South Africa production down 11% to 290,0000z year-on-year, while AISC improves to $975/oz or 14% Tropicana contributes 84,000oz at total cash cost of $4495/oz; AISC of $694/oz Kibali contributes 51,000oz at total cash cost of $538/ozz; AISC of $572/oz Net debt stable at $3.105bn Cash flow from operating activities stable year-on-year at $350m, despite 21% lower gold price Quarter Year ended ended ended ended Mar Dec Mar Dec 2014 2013 2013 2013 US dollar / Imperial Operating review Gold Produced - oz (0000) 1,055 1,229 899 4,105 Price received 1 - $/oz 1,290 1,271 1,636 1,401 All-in sustaining cost 2 - $/oz 993 1,015 1,275 1,174 All-in cost 2 - $/oz 1,114 1,233 1,622 1,466 Total cash costs 3 - $/oz 770 748 894 830 Financial review Adjusted gross profit 4 - $m 312 376 434 1,351 Gross profit - $m 296 404 434 1,445 Profit (loss) attributable to equity shareholders - $m 39 (305) 239 (2,230) - cents/share 10 (75) 62 (568) Headline earnings (loss) - $m 38 (276) 259 78 - cents/share 9 (68) 67 20 Adjusted headliine earnings 5 - $m 119 45 113 599 - cents/share 29 11 29 153 Dividends per ordinary share - cents/share - - 5 5 Cash flow from operating activities - $m 350 431 356 1,246 Capital expenditure - $m 274 477 512 1,993 Notes: 1.
    [Show full text]
  • Reef Adjacent to Structures at Tautona Mine, Anglogold Ashanti South African Operations
    Reef Adjacent To Structures at TauTona Mine, AngloGold Ashanti South African Operations DE DAVIES Section Manager TauTona Mine, AngloGold Ashanti South African Operations SYNOPSIS The paper describes the extraction of reef adjacent to geological structures in the Carbon Leader Reef Section at TauTona Mine. Traditionally long wall mining has left feasible and economical blocks of ground adjacent to structures when negotiating major geological features. This meant that mining through an up- throw fault, rolling to the reef elevation on the displaced side of the fault left reef in the long wall. High grade areas were abandoned and gold was sterilized. In these tight economic times and with the need to continuously improve safety standards the need arose to develop a technique to extract these blocks economically and safely. It was believed that the structures in these abandoned areas were de-stressed and could now be mined in small volumes at a high grade. The term RATS is an acronym derived from “reef adjacent to structures” and aptly describes the process of identifying and extracting these blocks. The viability of this method was addressed in terms of the mine design, underground investigations and financial risks. The paper concludes with an analysis of the successes achieved to date. 1 INTRODUCTION TauTona Mine is one of the AngloGold Ashanti Southern Africa operations. It is close to the town of Carletonville in the province of Gauteng and about 70km south-west of Johannesburg. TauTona is 46 years old and employs ± 4 000 people. Mining operations are conducted at depths ranging from 1,800m to 3,500m at which the world’s deepest stoping sections are found.
    [Show full text]
  • Access Ways in Ultra High Stress – the Next Step SANIRE 2004 – the Miner’S Guide Through the Earth’S Crust, South African National Institute of Rock Engineering
    Scheepers, L.J, Stability of access ways in ultra high stress – The next step SANIRE 2004 – The Miner’s Guide through the Earth’s Crust, South African National Institute of Rock Engineering Stability of access ways in ultra high stress – The next step L.J. Scheepers TauTona Mine ABSTRACT Stability of access tunnels through high stressed abutments remains a problem associated with deep level mining. The problem is compounded by the presence of faults or dykes in these abutments or pillars as large seismic events can occur on such features. This paper describes a novel way of ensuring the long-term stability of access tunnels through high stressed areas by mining an off reef de-stressing slot 7m above the tunnel simultaneous with and leading the development of the tunnel. 1 Introduction Republic of South Africa. Figure 1 shows the location of TauTona Mine in the West Rand Area. With all mining operations the stability of the access ways to the ore bodies are crucial for sustained safe Two economically viable gold-bearing orebodies are production. In deep level operations, quasi-static exploited within the TauTona Mine boundary area, stress related instabilities must be catered for with namely the younger and shallower Ventersdorp layout and support design of the access ways. In Contact Reef (VCR), and the older, deeper Carbon addition possible seismic loading on the access ways Leader Reef (CLR). must also be catered for. This is certainly true for TauTona Mine. At TauTona the CLR has been accessed and mined from depths between 2500 and 3600 metres below surface for an area of approximately 5000m on strike by 3500m on dip within the lease area.
    [Show full text]
  • Fermor 2011 Ore Deposits in an Evolving Earth 7 - 9 September 2011
    Fermor 2011 Ore Deposits in an Evolving Earth 7 - 9 September 2011 Abstract Book CONVENORS Gawen Jenkin (University of Leicester) Adrian Boyce (SUERC, Glasgow) Richard Herrington (Natural History Museum) Paul Lusty (British Geological Survey) Iain McDonald (Cardiff University) Martin Smith (University of Brighton) Jamie Wilkinson (Imperial College London)ster) Fermor 2011: Ore Deposits in an Evolving Earth CONTENTS Sponsor acknowledgement Page 2 Programme Pages 3-7 Oral abstracts Pages 8-38 (In programme order) Poster abstracts Pages 39-65 (In programme order) Sponsor information Pages 66-68 Fire safety information Pages 69-70 Map to the Royal Society Page 71 Note pages Pages 72-74 07-09 September 2011 Page 1 #fermor11 Fermor 2011: Ore Deposits in an Evolving Earth We gratefully acknowledge the support of the sponsors for making this meeting possible. 07-09 September 2011 Page 2 #fermor11 Fermor 2011: Ore Deposits in an Evolving Earth Programme Wednesday 7 September 2011 12.30 Arrival & registration & lunch Student session - sponsored by Gnomic Resources, Goldfields & the SEG 13.40 Opening comments Gawen Jenkin, University of Leicester 13.45 Modern mineral exploration – more than just geology Barry Stoffell, Rio Tinto 14.30 CPD and Chartership in the mining and exploration industry Bill Gaskarth, Geological Society & Jim Coppard, Anglo American 15.00 Tea & coffee & student posters 16.15 Keynote: Introduction to exploration and mining finance Philip Crowson, University of Dundee 17.15 Discussion & closing remarks 17.30 Icebreaker reception
    [Show full text]
  • Mining Human Assets by Haidee E
    BETTER PERFORMANCE THROUGH WORKPLACE LEARNING TMAY 2004 +D Mining Human Assets By Haidee E. Allerton AngloGold Ashanti, a South African gold mining company second largest in the world, is empowering the historically disadvantaged population of its workforce in part through leadership development, with the help of U.S.-based retention firm TalentKeepers. The results have economic and cultural implications not only for the workers, but also for gold mining and other industries, as well as for the country. Dick Finnegan of TalentKeepers (left) with AngloGold’s van Veijeren at Mponeng (means “Look at me” in the Sotho language) Mine, near Carletonville. The tower houses the elevator that goes underground to the mine. Gustav van Veijeren manager HR development ick Finnegan, chief client What Finnegan saw when he stepped ployee development program, in which Dservices officer of U.S. employee reten- off the mine elevator the next morning TalentKeepers would play a big part. tion firm TalentKeepers, arrived in Jo- was “an underground city” of corporate How a South African mining compa- hannesburg, South Africa, after a and training offices, ubiquitous kiosks ny and a U.S. retention firm found each 22-hour flight, knowing that the next housing training manuals, and an elabo- other is serendipitous. AngloGold has a resource center and library at its head- morning he would be making his first- rate system of tracks leading to the areas quarters, and its manager, Belinda Roux, ever visit to a gold mine three kilometers where ore is blasted from the hard rock. saw the article “Focus on Talent” by (about 1.9 miles) deep into the earth.
    [Show full text]
  • Extreme Prospects High Gold Prices Are Making It Worthwhile to Look for Gold in Some Unusual Places
    OUTLOOK GOLD TOM FOX/DALLAS MORNING NEWS/CORBIS FOX/DALLAS TOM Miners walk between elevators en route to the depths of South Africa’s TauTona mine, the world’s deepest gold mine, 4 km below the surface. MINING Extreme prospects High gold prices are making it worthwhile to look for gold in some unusual places. BY BRIAN OWENS ounce in 2003 to almost $1,700 at the end of in the Peruvian Andes, 4,100 metres above 2012. At the same time, gold production has sea level, miners are digging deeper than ever he journey from the surface to the rock seen only marginal increases, with few new before, going to more remote locations and face at the bottom of TauTona, the world’s mines opening. And it’s getting a lot more politically volatile regions. deepest gold mine, takes almost an hour expensive to extract the gold. In 2000, the aver- At the same time, significant amounts of T— even with the lifts that bring the workers age cost of extracting an ounce of gold was just gold can easily be obtained without digging down each of the mine’s three shafts travelling over $200, says Jason Goulden, director of met- into the earth at all — just by recycling the at 58 km per hour. In the dark, hot, cramped als and mining at the SNL Metals Economics gold buried in the growing mountains of dis- tunnels nearly 4 km underground, workers Group in Halifax, Canada. By 2010, he says, it carded electronics. The advent of more effi- excavate a thin dipping vein of gold ore.
    [Show full text]
  • Adding Value to Natural Resources
    ADDING VALUE TO NATURAL RESOURCES ANGLO AMERICAN PLC with its subsidiaries, joint ventures and associates is a global leader in the mining and natural resource sectors. It has significant and focused interests in gold, platinum, diamonds, coal, base metals, ferrous metals and industries, industrial minerals and paper and packaging, as well as financial and technical strength. The Group is geographically diverse, with operations in Africa, Europe, South and North America and Australia. Anglo American represents a powerful world of resources. Throughout this report,‘$’ means United States dollars. HEADLINE EARNINGS NET ATTRIBUTABLE OPERATING ASSETS H1 2003 (%) H1 2003 (%) 30 Europe 30 Europe 30 South Africa 36 South Africa 12 Americas 20 Americas 28 Rest of World 14 Rest of World 01 FINANCIAL HIGHLIGHTS Headline earnings per share increased by 2% to 61 US cents despite weakness of the US dollar. Strength from product and geographic diversity. Outstanding contribution from Diamonds, up 49%, strong performances from European Paper and Packaging and Industrial Minerals more than offset reduced earnings from Platinum, Gold and Coal. Geographic headline earnings significantly altered: H1 2003 H1 2002 Europe 30% 21% South Africa 30% 54% North and South America 12% 7% Rest of World 28% 18% Further cost savings and efficiency improvements of $127 million achieved. Strong cash generation: EBITDA up 9% at $2.4 billion; EBITDA interest cover of 14 times; annualised EBITDA return on total capital 19%. $6 billion expansion programme in progress. Interim dividend maintained at 15 US cents per share. Anglo American plc Interim Report 2003 02 CHAIRMAN’S AND CHIEF EXECUTIVE’S JOINT STATEMENT FIRST HALF RESULTS The new $147 million Copebrás phosphate fertiliser Headline earnings for the first half of 2003 of plant in the state of Goiás, Brazil, was officially $856 million (61 US cents per share) were 2% higher opened in April by the President of Brazil.
    [Show full text]
  • Anglogold A/R Front (P1-40)
    Key features 2000 Gold production increases by 5 per cent to 7.2 million ounces and operating profit rises by 6 per cent to R3.3 billion. Headline earnings decline by 11 per cent to R1.77 billion, mainly as a result of a focus on growing the business and the consequent increase in net interest paid. Integration of AngloGold Australasia (formerly Acacia Resources) into AngloGold, providing a sound foothold in this key gold-producing region, together with the inclusion of AngloGold in the All Ordinaries Index on the Australian Stock Exchange in January 2000. The AngloGold share is now tradeable around the world for 24 hours a day. Approval for construction of the Yatela mine in Mali in February 2000 at a capital cost of some $76 million. Production will begin in June 2001. Acquisition in July 2000 of 25 per cent of OroAfrica, the largest manufacturer of gold jewellery in South Africa, for $8 million (R55 million). Acquisition in July 2000 of a 40 per cent interest in the Morila mine in Mali for $132 million, with a project finance provision of $36 million. AngloGold manages this operation. Purchase of a 50 per cent stake in the Geita mine in Tanzania for $205 million, with a project finance provision of $67 million. The mine was officially opened on 3 August 2000. AngloGold has entered into a further strategic alliance with Ashanti Goldfields Limited to seek opportunities for working together in Africa. Sale of Deelkraal and Elandsrand mines negotiated for R1 billion ($132 million), in line with AngloGold’s strategy of concentrating on higher margin, longer-life operations.
    [Show full text]
  • Supplementary Mineral Resource and Ore Reserve Information 2003
    supplementary mineral resource and ore reserve information 2003 Supplementary Mineral Resource and Ore Reserve information Contents 2 Ore Reserves by region 3 Mineral Resources by region 4 Ore Reserves by operation 7 Mineral Resources by operation 10 Grade tonnage curves of the Mineral Resource 18 Year-on-year Mineral Resource and Ore Reserve comparison by operation 24 Year-on-year Mineral Resource and Ore Reserve changes 26 Modifying factors 28 Drillhole spacing 32 Ore Reserves by project 35 Mineral Resources by project 40 Development sampling results – South Africa region 42 Competent persons 1 Ore Reserves by region 2 as at 31 December 2003 Ore Reserves Metric Imperial Contained Contained Tonnes Grade gold Tons Grade gold Mt g/t tonnes Mt oz/t Moz South Africa Proved 54.8 2.96 162.0 60.4 0.086 5.2 Probable 267.9 4.12 1,104.3 295.3 0.120 35.5 Total 322.6 3.93 1,266.4 355.6 0.114 40.7 East & West Africa* Proved 23.3 3.01 70.0 25.7 0.088 2.3 Probable 48.2 3.52 169.4 53.1 0.103 5.4 Total 71.5 3.35 239.5 78.8 0.098 7.7 South America* Proved 10.6 7.27 77.4 11.7 0.212 2.5 Probable 6.3 7.34 46.4 6.9 0.214 1.5 Total 17.0 7.30 123.8 18.7 0.213 4.0 Australia* Proved 46.9 1.31 61.3 51.7 0.038 2.0 Probable 105.3 1.40 147.2 116.1 0.041 4.7 Total 152.2 1.37 208.6 167.8 0.040 6.7 North America* Proved 53.9 1.26 67.7 59.4 0.037 2.2 Probable 64.7 0.87 56.1 71.3 0.025 1.8 Total 118.6 1.04 123.8 130.7 0.030 4.0 Tot al* Proved 189.5 2.31 438.5 208.9 0.067 14.1 Probable 492.4 3.09 1,523.5 542.8 0.090 49.0 Total 681.9 2.88 1,962.0 751.7 0.084 63.1 *Reserves attributable to AngloGold.
    [Show full text]
  • Mineral Resource and Ore Reserve in Accordance with the JORC and SAMREC Codes
    Supplementary Information: Mineral Resource 06 and Ore Reserve Page 112 Page 114 Page 48 Page 55 Page 42 Page 50 Page 44 It is AngloGold Ashanti policy to report its Mineral Resource and Ore Reserve in accordance with the JORC and SAMREC codes. Page 2_AngloGold Ashanti_Mineral Resource and Ore Reserve 2006 Page 91 Page 84 Page 87 Page 95 Page 70 Page 69 DRC Page 106 Page 71 Page 76 Page 104 Page 100 Page 59 Page 98 10 18 21 Mineral Resource 2 Page 66 and Ore Reserve 24 Page 62 Summary 28 8 31 34 9 37 AngloGold Ashanti_Mineral Resource and Ore Reserve 2006_Page 1 MINERAL RESOURCE AND ORE RESERVE Ore Reserves and Mineral Resources are reported in accordance with the minimum standard described by the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (The JORC Code, 2004 Edition), and also conform to the standards set out in the South African Code for the Reporting of Mineral Resources and Mineral Reserves (the SAMREC 2000 Code). Mineral Resources are inclusive of the Ore Reserve component unless otherwise stated. Mineral Resources The 2006 Mineral Resource increased by 14.1 million ounces to 181.6 million ounces before depletion. After a depletion of 8.3 million ounces, the net increase is 5.8 million ounces. Mineral Resources were estimated at a gold price of $650 per ounce in contrast to the $475 used in 2005. The increased gold price resulted in an increase of 5.8 million ounces while successful exploration and revised modelling resulted in a further increase of 7.6 million ounces.
    [Show full text]
  • Earthquake Rupture at Focal Depth, Part I: Structure and Rupture of the Pretorius Fault, Tautona Mine, South Africa
    Pure Appl. Geophys. 168 (2011), 2395–2425 Ó 2011 Springer Basel AG DOI 10.1007/s00024-011-0354-7 Pure and Applied Geophysics Earthquake Rupture at Focal Depth, Part I: Structure and Rupture of the Pretorius Fault, TauTona Mine, South Africa 1,2 1,3 1 V. HEESAKKERS, S. MURPHY, and Z. RECHES Abstract—We analyze the structure of the Archaean Pretorius 1. Introduction fault in TauTona mine, South Africa, as well as the rupture-zone that recently reactivated it. The analysis is part of the Natural Earthquake Laboratory in South African Mines (NELSAM) project Fault-zones typically move by infrequent earth- that utilizes the access to 3.6 km depth provided by the mining quakes that are localized along weak surfaces and operations. The Pretorius fault is a *10 km long, oblique-strike- separated by inter-seismic periods of tens to thou- slip fault with displacement of up to 200 m that crosscuts fine to very coarse grain quartzitic rocks in TauTona mine. We identify sands of years. Fault healing between earthquakes here three structural zones within the fault-zone: (1) an outer may renew fault strength and its rupture resistance damage zone, *100 m wide, of brittle deformation manifested by (MARONE, 1998;MUHURI et al., 2003;SIBSON, 1985). multiple, widely spaced fractures and faults with slip up to 3 m; (2) an inner damage zone, 25–30 m wide, with high density of anas- This earthquake cycle terminates when the fault tomosing conjugate sets of fault segments and fractures, many of becomes quiescent due primarily to changes in tectonic which carry cataclasite zones; and (3) a dominant segment, with a activity.
    [Show full text]
  • News Release
    AngloGold Ashanti Limited (Incorporated in the Republic of South Africa) Reg. No. 1944/017354/06 ISIN: ZAE000043485 – JSE share code: ANG CUSIP: 035128206 – NYSE share code: AU (“AngloGold Ashanti” or the “Company”) 19 October 2017 NEWS RELEASE ANGLOGOLD ASHANTI ANNOUNCES THE SALE OF VARIOUS ASSETS IN THE VAAL RIVER REGION INCLUDING THE MOAB KHOTSONG MINE TO HARMONY 1. INTRODUCTION AngloGold Ashanti is pleased to announce that it has entered into a sale and purchase agreement (the “SPA”), to dispose of various assets situated in the Vaal River region of South Africa to Harmony Gold Mining Company Limited (“Harmony”) for a cash consideration of US$300 million (the “Transaction”). The assets and related interests to be sold include the following: • The Moab Khotsong mine (which incorporates the Great Noligwa mine) and related infrastructure (the “Moab Mining Sale Assets”); • AngloGold Ashanti’s entire interest in Nuclear Fuels Corporation of South Africa Proprietary Limited (“Nufcor”); and • AngloGold Ashanti’s entire interest in Margaret Water Company NPC (“MWC”) (collectively, the “Sale Interests”) “This transaction is in line with our capital allocation strategy and our aim to effect the improvement of our global portfolio, through projects that extend mine lives, enhance margins and provide quicker cash turns on investment,” AngloGold Ashanti Chief Executive Officer Srinivasan Venkatakrishnan said. “We are pleased to have agreed the sale of the Moab assets on fair terms to a well-established mining company with plans to secure its long-term future.” Production from AngloGold Ashanti’s remaining South African operations, comprising the long life Mponeng mine and Mine Waste Solutions (“MWS”) surface operation, will constitute less than 15% of the Company’s estimated annual production.
    [Show full text]