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Environment

Review 2005

In the Report to Society 2004, the company set a number of objectives for 2005. All of these targets have either been met in full or in part.

Environment
Objectives for 2005 Performance in 2005
Continued implementation of a “high level” environmental reporting system.  A ‘major incident‘ environmental reporting system was put in place, with details of incidents recorded below.
Improve environmental data gathering systems in accordance with stakeholder and GRI reporting requirements.

 

 Significant improvements have been made to environmental data collection and reporting systems. A series of environmental guidelines are being prepared to provide appropriate guidance. See GRI document on the website for further details.
Consider the adoption of ISO 14001 as the group-wide environmental management system. ISO 14001 has been adopted as the group standard. A target has been set to achieve certification of all operating mines by the end of 2006.
Review mine closure plans and associated costs across the group. Total environmental liability estimates are revised on an annual basis – see below. Through the ICMM, AngloGold Ashanti is participating in a project aimed at understanding and improving current environmental and social practices related to mine closure.
Improve environmental awareness across the group. This continues to be driven at the regional and mine level. The need for a series of group-wide environmental guidelines has been identified.
Develop criteria for company environmental award. A number of criteria have been identified but concern about the objectivity of such an award has resulted in this being postponed until such time as the set of guidelines have been developed against which to evaluate performance objectively.
Continue with the integration of the former Ashanti operations. The integration of the former Ashanti operations has continued. Apart from the routine visits to operations, involvement in management and board subcommittee meetings, and reporting of performance, other efforts have included:
  • Participation in the selection and deployment of environmental staff within the region;
  • Secondment of Dr William Ahortor from Iduapriem Mine to the Corporate Environmental Office; and
  • A strategic environmental review of the Obuasi mine was carried out by a team of internal environmental specialists drawn from the United States, Australia and Ghana.
 

The discussion that follows reports on the group’s environmental performance in line with the company’s business principles, which appear in orange below.

We recognise that the long-term sustainability of our business is dependent upon good stewardship in both the protection of the environment and the efficient management of the exploration and extraction of mineral resources.

Environmental policy and strategy within AngloGold Ashanti is overseen by the Committee on Safety, Health and Sustainable Development. Although the committee is apprised of developments in all spheres of activity, the focus of each meeting rotates through safety, health, environment and community issues to ensure that adequate focus is given to each area.

The group has an environmental policy in place at a corporate level, although operations may have their own site-specific policies, which are consistent with group policy.

Environmental policy and strategy is monitored and audited against Group Standards at a corporate level. Within each region, the regional environmental manager provides advice to the relevant management teams. At most operations, on-site environmental professionals are responsible for implementing the mine’s environmental programme and advising the general manager. Regional environmental offices and the operations themselves may, when appropriate, engage specialists who consult to the operations.

An Environmental Steering Committee has been established at a corporate level and is made up of the regional environmental managers. The insights of this group are used to identify and debate critical environmental issues facing the company, develop strategic response recommendations, and formulate plans for practical implementation.

As an example of the integrated approach that has been adopted, a strategic review of environmental management at the Obuasi operations was completed in November. The purpose of the exercise was to review environmental conditions at the operations, identify current environmental risks, prioritise these risks, develop short-term action plans and make recommendations for an improved environmental management programme.

We will comply with applicable environmental laws, regulations and requirements

The group's business principles and environmental policy guide AngloGold Ashanti's management of the impact that the company has on the environment. Operations are subject to the environmental laws, rules and regulations of the various countries in which they operate but, where no such laws exist or where these laws are perceived to be inadequate, operations are guided by the company's business principles, environmental policy and good practice.

Managing environmental issues is a key component of the overall risk management process. Thus, through effective environmental management, the company is able to manage its exposure to business risks and liabilities, providing assurance to shareholders and attracting potential investors.

In South Africa, for example, Environmental Management Programmes (EMP) are in place for the West Wits, Vaal River and Ergo operations as is required by the Minerals and Petroleum Resources Development Act (MPRDA). All policy issues that can be addressed at a business unit level are included in the EMP management actions, covering radiation management, waste management, air quality management, land management, surface water management and groundwater management. The EMPs are updated every two years. The conversion process started in 2005 with an Environmental Impact Assessment (EIA) being developed for each operating area where present direct and indirect impacts on the environment are identified and evaluated in terms of significance. Future direct and indirect impacts are identified and evaluated in the decommissioning and closure section of the EMP. Management actions and opportunities required to reduce the negative impacts are identified. The South Africa region’s environmental policy was also modified during the quarter to comply with the requirements of ISO 14001, regarding such issues as pollution prevention, legal compliance, continual improvement and policy availability to the public.

No fines have been recorded during the year. A strategic environmental review of the Obuasi mine has been carried out by a team of internal environmental specialists drawn from the United States, Australia and Ghana. The purpose of the exercise was to review environmental conditions at the operations, identify current environmental risks, prioritise these risks, develop short-term action plans and make recommendations for an improved environmental management programme. The review has identified a series of remedial actions to address problem areas. A number of environmental licences and permits were granted during the year and none was retracted on the basis of environmental performance.

At the Big Springs operation in Nevada, the Great Basin Mine Watch appealed against the renewal of the Water Pollution Control Permit issued by the Nevada Environmental Protection Division. AngloGold Ashanti (Nevada) Corp. filed a petition in response to intervene. Briefs have been filed by the parties and a hearing to resolve the appeal has been scheduled to go before the Nevada State Environmental Commission on 29 and 30 March 2006.


ISO 14001

In March 2005, AngloGold Ashanti’s Executive Committee (Exco) decided to pursue ISO 14001 certification for all its operating mines by December 2006. This follows a gap analysis undertaken during 2004 which indicated the degree to which current EMSs were aligned with ISO 14001.

The regions which had not previously implemented ISO 14001 are at different stages of implementation. The implementation in South Africa, for example, has been integrated with the region’s Enterprise Wide Risk Management system, since environmental management is viewed as yet another risk that a business unit faces. The present auditing system, the legal register system, the performance assessment report process, and the EMP update process are all being incorporated into the new system. Overall, the initiative is on schedule, with good progress being achieved in the areas of systems procedures, the planning section, and the implementation and operation phase. The Geographic Information System (GIS) continued to be developed as a database for all environmental management data from monitoring and management actions, represented spatially for the three geographic areas. The GIS is being incorporated into the main EMS.

The following operations are currently ISO 14001 certified:

Country Operation Date achieved Certified by Valid until
Argentina Cerro Vanguardia July 2002 National Quality
Assurance 
(NQA) – USA 
May 2006
Brazil AngloGold
Ashanti Mineração
March 2004 National Quality 
Assurance 
(NQA) – USA
May 2007
Serra Grande March 2004 National Quality 
Assurance 
(NQA) – USA
March 2007
Ghana Bibiani February 2003 DLIQ Certification
Services
Feb 2006
Iduapriem January 2004 DLIQ Certification
Services
Jan 2007
Tanzania Geita July 2001 DLIQ Certification
Services
July 2007

Environmental incident reporting

AngloGold Ashanti’s reporting protocol enables the company to identify and manage the risks and impacts of environmental incidents, as well as their associated costs, by providing the appropriate level of information necessary to advise the executive and the board of the nature and occurrence of important incidents and developments and management’s response.

In line with this protocol, a major environmental incident report must be made within 24 hours to the corporate office. A summarised report of incidents and major developments within each region is presented at the Safety, Health and Sustainable Development Board Committee meeting.

For purposes of reporting, a major environmental incident is defined as 'an event, action or non-conformance with a procedure that results, or has the potential to result, in an adverse impact on the surrounding environment; or any event, action or occurrence which is contrary to the AngloGold Ashanti business principles’. The definition was reviewed by the board committee and is presented below.

A major incident is one which:

(1) could affect the company’s reputation, or
(2) results in a cost to the company exceeding $100,000 including fines, compensation, clean-up, loss of production, anticipated litigation costs, etc.

Subject to meeting the above criteria, examples of issues of direct interest include, but are not limited to:

  • matters which, by law, must be reported to government agencies;
  • matters which, by law, are subject to fines and/or penalties;
  • environmental impacts which are by their very nature either extensive or likely to have long-term effects;
  • cyanide-related incidents;
  • tailings dam failures;
  • spillage or leakages with impact beyond the company’s designated containment areas – of tailings materials, hyrdocarbons, acids and other chemicals;
  • emissions beyond permitted levels e.g. atmospheric and effluent releases;
  • dust emissions which may impact on the company’s reputation; and
  • wildlife mortalities and land clearing activities which may impact on the company’s reputation.

24 incidents were reported to the board during the year, which is a substantial increase on the number (16) reported the previous year. This increased level of reporting is as a result of: the increase in the size of the group and the fact that environmental performance is now reported for the Ghana and Guinea operations; and improved environmental performance, monitoring and reporting.

Operation Nature of incident Action taken
Argentina
Cerro
Vanguardia
An anomalously high value for HCN gas was detected in the Cyanosorb plant. This was promptly corrected with no impact on people or the environment.
Australia
Sunrise Dam No major incidents
Brazil
AngloGold Ashanti Mineração At Queiroz Plant, a high incidence of copper was detected in effluents from the treatment of old tailings deposited in the Nova Lima area. Monitoring determined that there was no adverse effect on flora and fauna. At year end, with the conclusion of tailings retreatment, water quality has returned to permitted levels.
Ghana
Obuasi A tailings spillage from Sansu tailings dam resulted in approximately 4,000,000 m3 of water entering the Nyam River. On detection, the damaged portion of the dam, which was due to artisinal miners activities, was repaired. Security around the dam was also stepped up to prevent future damage to the dam walls.
The Kokoteasua tailings retreatment retention sumps overflowed resulting in the flooding of a school and a number of residences downstream of this facility. The sumps have been cleaned and stormwater drainage control has been improved. The school and houses downstream were cleaned and appropriate compensation was administered.
On 19 February 2005 two birds died after drinking from a pool of arsenic contaminated water at the new arsenic storage yard. The arsenic store has been covered with a high density polyethylene liner.
Mali
Morila 12 bird (egrets) fatalities were recorded on the TSF on 29 March 2005. The most probable cause of death is cyanide poisoning after consumption of contaminated water. Controls were tightened up.
Sadiola A significant incident was recorded when a spring, consisting of tailings water, was detected outside the mine lease area. Cyanide levels, at 0ppm CNFree and 0.4ppm CNWAD, were considered to pose no danger to humans or animals. The water was contained in a trench on the lease and then pumped back to the Tailings Storage Facility (TSF). The local government authorities were fully informed, visited site and were involved in the development of the remedial action plan.
The TSF pipeline developed a leak outside the plant fence. Although the leak was small, the plant was immediately shut down to allow for repairs. A small quantity of tailings slurry ran under the road and mixed with a pond of rainwater next to the road, but it was all contained. Traditional leaders as well as the local government representatives were informed about the incident. Although the spill was relatively small, the incident was classified as Category 1 because it occurred outside of the mine fence, in an area that is accessible to the public and livestock. The two samples analysed had weak acid dissociable (WAD) cyanide levels of 5 and 9mg/l, below regulatory limits.
Four bird fatalities (grey herons) were recorded on the TSF on 23 March 2005. Autopsies concluded that the cause of death was sodium toxicosis. Sodium concentrations were above 1600mg/l. Sodium metabisulphate is used to detoxify cyanide. Controls have been put in place to manage the detoxification process.
Yatela About 76,000 m3 of water that had been pumped from the excess pond disappeared through sink holes at the base of the newly built Zero Discharge Dam. Water from the excess pond was known to contain high levels of chromium but analytical results indicated no groundwater contamination with chromium. The dam basin was subsequently lined with clay and is now holding water.
Two birds (a dove and a sparrow hawk) died after drinking cyanide containing water in a solution trench between the heap leach pad and process ponds on 4 April 2005. Contaminated water originated from a leaking irrigation pipe. Repairs were carried out, the trench flushed and more patrols instituted to deter birds from approaching the area.
South Africa
Ergo Some 1,000 tonnes of slurry flowed down a dirt road, after a hole developed in a slurry pipeline from the Reclamation West pump station. About 500 tonnes of material flowed into the storm water system and was discharged into the Natal Spruit (stream). About 500 tonnes of material were contained. Mitigatory action included repairs to the pipeline and the clean-up of the spilled material.
The incoming C stream slurry pipeline created a slime spillage in an urban area. Pumping operations ceased at Ergo at the end of October 2005.
On 13 February 2005 a pipeline failure in the Reclamation West to the Ergo Metallurgical plant line resulted in ±3500 m3 of slurry flowing down road into municipal storm water system. Remedial clean-up measures were implemented.
Ergo E-stream slurry line failure resulted in approximately 25 m3 overflow from a containment paddock into the Elsburgspruit tributary on 16 February 2005. Remedial clean-up measures were implemented.
On 13 April 2005 some slurry flowed into the back gardens of four houses in Spyker Rd (Rynsoord) following the overtopping of a containment structure and subsequent flooding of the stormwater trench with process water. Compensatory and clean-up procedures were implemented.

 

Vaal River Unusually high rainfall of 239 mm fell in the catchment area between 26 December 2004 and 5 February 2005. The dam capacity subsequently proved to be insufficient to accommodate the resultant run-off and operational return water. The estimated discharge was 90,000 m3 of water and 270 tonnes of salts which affected land below the dam. A similar overflow was experienced between 16 March and 15 April. Management measures have included an upgrade of pumping capacity and investigations into the possibility of alternating water flow to the nearby West TSF complex.
The final water pollution control dam overflowed. A capital application to modify process water management in this area is in place to address this issue.
   Vaal River High concentrations of sulphur dioxide were recorded at the monitoring station adjacent to the Vaal River acid plant. Improved monitoring systems have been installed to allow immediate process corrective action.
Significant amounts of dust were generated on several occasions from the sulphur pay dam at Vaal River, resulting in several complaints. Dust suppression using water cannons continues to be used. The removal and reprocessing of this dam will ultimately solve this problem.
Contaminated storm water from the West Complex TSF entered the Schoonspruit between 20 and 21 January 2005. Improved stormwater management measures have been implemented.
   West Wits An unauthorised discharge of process water 10,149 m3 occurred from the North boundary dam into the Wonderboom Spruit between 21 and 23 January 2005. The finalisation of the clean/dirty water separation project in February will ensure that there is no repeat occurrence.
Overflow of the North Boundary of dirty water from the dam owing to insufficient capacity. Management measures included the separation of clean and dirty water flows within the catchment area and the initiation of a R5.7 million legacy project to remedy the situation. (See Report to Society 2004 for case study on legacy projects.)
   Exploration About 15 tonnes of sodium cyanide, 6 tonnes of copper sulphate and 10 tonnes of other chemicals were discovered in containers at the old plant sité in the Kimin lease area at Mongbwalu. An urgent three-phase plan is being implemented: first, guards were placed around the facility to prevent public access to the containers. A clean-up programme was completed by the end of December 2005, and in the ensuing phases appropriate containers were used for storage and transport away from site.
USA
   CC&V No major incidents  

In addition, the Safety, Health and Sustainable Development board committee is informed of major developments and their anticipated impact on the company. The subjects that are to be reported on include matters such as:

  • legislative and/or regulatory developments dealing with environmental matters that will have or, if passed or likely to be passed into law or adopted, would have a major impact upon AngloGold Ashanti business;
  • identification of and/or updates on threatened or pending legal action against the company involving an environmental matter;
  • environmental initiatives, or programmes, developed or proposed by non-governmental organisations (NGOs) and targeted at the company or the broader mining industry;
  • complaints or demands dealing with environmental matters that are brought by a local community or government entity against the company; and
  • any other environmental issue that operations feel is of significance to its region.

Risk management

Risk management forms an integral part of AngloGold Ashanti’s environmental management systems. Each operation undertakes its own risk assessment in respect of environmental issues and these risks are then managed at an operational level. A number of high level risks were identified during 2005 and considered at a corporate level. These include increasing activity by NGOs such as Oxfam and Earthworks, in various anti-gold mining campaigns, for example, the ‘No Dirty Gold Campaign‘. Following media reports on AngloGold Ashanti in the DRC, the company featured on that campaign’s website.

The use of cyanide in the mining industry is an ongoing debate, particularly in North America (see case study: Using cyanide responsibly at CC&V), where environmental activist groups are continuing their efforts to ban the use of cyanide or other toxic/acidic ore processing reagents, heap leaching or surface mining. AngloGold Ashanti was party to the development of the International Cyanide Management Code and was one of the first signatories announced in November 2005. (See box below).

Water management and the prevention of pollution, in particular groundwater seepage, are important global environmental concerns. The need for an integrated regional approach to water management was highlighted in South Africa recently when the Department of Minerals and Energy (DME) issued a directive to mining companies in relation to water pumping costs. (See case study: Mine closure stretches environmental legislation.)

Mine closure issues, ranging from planning to financial provisions and potential liabilities are significant in all regions of operation. All AngloGold Ashanti operations have mine closure plans in place that are regularly updated. The total expected liability is detailed below.

   
Information released by the International Cyanide Management Institute

3 November 2005

Initial signatories announced to International Cyanide Management Code

The initial signatories to the International Cyanide Management Code for the Manufacture, Transport and Use of Cyanide in the Production of Gold were announced today by the International Cyanide Management Institute (ICMI). The code is a voluntary industry programme for companies that use cyanide in the production of gold. The initial 14 signatories include nine gold mining companies and five cyanide manufacturing and transport companies, covering more than 80 facilities worldwide and representing approximately 36% of the gold presently being mined in the world.

The code's principles and standards of practice commit signatories to manage cyanide in a responsible manner. The code covers nine key areas: cyanide production, the transport of cyanide to mine sites, the handling and storage of reagent cyanide, on-site use and management of cyanide, the decommissioning of facilities, worker safety, emergency responses, training, and communication with the public.

The code's implementation guide describes the procedures necessary for the safe management of cyanide and identifies the practices to be followed in implementing each of the code's principles and standards.

In becoming a signatory, a company commits to following the code's principles and implementing its standards of practice, and to having verification audits of its individual operations conducted by independent third-party auditors within three years of its initial application, and every three years thereafter. The purpose of the verification audit is to evaluate an operation to determine whether its cyanide management is in line with the code's principles and standards of practice, or in the case of cyanide producers and transporters, the principles and practices identified in their respective verification

protocols. Operations will be certified if in compliance with the code, and will be de-certified if the ICMI determines that they no longer comply with the code.

The initial signatory companies are: 
AngloGold Ashanti Limited Kingsgate Consolidated Limited
Australian Gold Reagents Pty Ltd Kinross Gold Corporation
Barrick Gold Corporation Newmont Mining Corporation
CYANCO Orica Australia Pty Ltd
CyPlus Corporation Pan Australian Resources Limited
E.I. DuPont de Nemours and Company Placer Dome Inc.
Gold Fields Limited Rio Tinto
A detailed list of the operations covered by these signatory companies' applications, along with the full text of the code and its implementation and administrative documents, are available at www.cyanidecode.org.

The company will ensure that financial resources are available to meet its reclamation and environmental obligations

In all the jurisdictions in which the group operates, the company is required to conduct closure and rehabilitation activities in order to return the land to a productive state post-mining. Additionally, these same jurisdictions require the company to provide financial assurance, in a form prescribed by law, to cover some or all of the costs of the anticipated closure and rehabilitation for the operation. Rehabilitation refers to the process of reclaiming mined land to that which existed prior to mining or to a pre-determined, use post-mining.

Closure plans are devised prior to the commencement of operation and are updated regularly to take into account life-of-mine projections. Although the final cost of closure cannot be fully determined ahead of closure, provision is made during the mine’s economic operation. Total estimated environmental liability (rehabilitation and mine closure costs) amounted to $337.7 million as at 31 December 2005 (2004: $350.1 million).

In South Africa, the newly enacted MPRDA has emphasised the need for companies to cover all decommissioning, closure and rehabilitation financial liabilities at all times during the operational phases of the mines. The shortfall between the presently declared environmental liabilities and the present balance in the Trust Fund, designed to cover these liabilities, is R305 million. Negotiations have taken place over a period of time with the government over this issue, and it has recently been agreed with the DME that a joint task team will address the issue by revisiting an original agreement formulated three years ago.

This agreement described certain environmental and financial criteria that must be achieved by a mining company if the company wanted to use the Trust Fund mechanism solely for funding up to the closure date of the mine. The DME finalised a guideline document for the estimating of closure costs at the beginning of the year. The document was revised with input from the mining industry. Nevertheless, adoption of this guideline has not significantly increased the estimated cost of closure.

The new act and regulations place particular emphasis on the design, construction, operation and closure of tailings storage facilities and waste rock dumps. Approval from the government departments for the detailed closure plans for the Daggafontein and Brakpan tailings storage facilities was obtained during the year, a significant first for the gold mining industry in South Africa. The Brakpan complex facility is the largest gold tailings facility in the world.

 Total environmental liability (restoration and decommissioning) are detailed below:

Total environmental liability 2005/2004
Country Total Total** Comments
  estimated estimated  
  liability liability  
  2005 2004  
  ($ million) ($ million)  
Argentina 8.8       The reduced costs are attributable to rehabilitation work carried out in 2005, exchange rate variations and adjustments made to the attributable portions of the company shareholdings.
      38.9
   
   
Brazil 12.5   The reduced costs are attributable to rehabilitation works carried out in 2005, exchange rate variations and adjustments made to the attributable portions of the company shareholdings.
     
     
     
Australia 32.7   38.3  
Ghana 47.1   The upward revision of the Obuasi closure cost is a result of ongoing negotiations with the Ghanaian EPA regarding the rehabilitation programme and the mines’ closure plans.
     
      39.5
     
Guinea 8.5   Adjustments are a result of the plant expansion and a revision of the closure plan incorporating a more conservative approach to closure cost estimation.
     
     
Mali 13.4   At Yatela, the increase accommodates closure and rehabilitation of several new leach pads.
      45.3
    At Sadiola, the decrease is a result of a revised estimate, excluding retrenchment costs and rehabilitation carried out as a result of ongoing efforts.
   
   
    At Morila, the increase is due to a revised closure plan which affects the slopes of the pit walls.
   
Namibia 3.0  
     
Tanzania 44.1   At Geita, the increase is due to a revision of the closure plan, including quantity survey, which resulted in more accurate estimation of costs.
     
     
South Africa 145.3   133.2 Changes in South African legislation have resulted
      in increased liability estimates and provisions being
      put in place.
USA 22.3   55  
Total 337.7   350.2  
*Note: The total environmental liability has decreased year-on-year. The current figures relate directly to the audited financial statements, which represent the current environmental liability, whereas the 2004 figures includes estimates related to projected future liability. Changes have also arisen as a result of the closure of operations.
 

The company will ensure that its employees and contractors are aware of this policy as well as their relevant responsibilities

The training of employees regarding environmental policies and procedures is an integral part of the ISO 14001 system in place at those operations that are ISO 14001 certified. Many of the operations that are not yet ISO 14001-compliant have in place sound training procedures for employees and contractors.

Environmental awareness training is generally most effectively included in site induction programmes. Other media used at an operational level include noticeboards, briefings, employee and contractor handbooks and the intranet.

We will conduct audits to evaluate the effectiveness of our environmental management systems

Both internal and external audits were conducted during the year. Most commonly, these were associated with the ISO 14001 certification and maintenance requirements. The table above indicates the dates of the current ISO certification audits.

As a signatory to the Australian Minerals Industry Code for Environmental Management (Code 2000), the Australia region is committed to annual site audits in terms of the code. In February 2005, RISKMIN (certified auditing company) audited Sunrise Dam against its Corporate Environmental Standards. The result of this audit indicated a 71% level of compliance. These Environmental Standards are being used to develop the ISO 14001 system.

We are committed to communicating and consulting with interested and affected parties on environmental aspects of our activities

Communication and consultation with interested and affected parties on environmental aspects of AngloGold Ashanti activities is done through a range of mechanisms. Much of the interaction with community members is dealt with under the community section of this report. Of particular relevance to environmental reporting is the public consultation and disclosure programme currently being undertaken at Sadiola and Yatela in Mali. See case study in the Report to Society 2004.

A list of the stakeholders with whom the company engaged, both formally and informally, may be found on the website. This list is not exhaustive. It provides an indication of the range of bodies with which the company interacts on matters related to the environment.

In South America, for example, a toll-free number is available to community members to lodge complaints, which are then investigated.

We will work to continually improve our environmental performance.

The company’s primary environmental concerns are:

  • the use and management of cyanide,
  • mine rehabilitation and closure,
  • water use and management,
  • the use of other resources (such as energy) and the minimisation of waste,
  • biodiversity issues, and
  • climate change.

Environmental and human rights NGOs have an important role to play in monitoring and reporting on the environmental (and human rights) conduct of companies, including AngloGold Ashanti. The company will continue to engage with these organisations in seeking solutions to identified problems, both directly with the NGOs and through our association with organisations such as the ICMM and the CRJP.

The use and management of cyanide

The use of cyanide in the recovery of gold is a core concern for the gold mining industry and is critical to its viability. This is particularly so for North American operations. The CMA has taken the lead in legally challenging the anti-mining ban in Summit County (not a county where AngloGold Ashanti conducts mining or exploration activities) and AngloGold Ashanti is represented on the steering committee. (See case study: Using cyanide responsibly at CC&V.)

AngloGold Ashanti has been actively involved in the development of the International Cyanide Management Code and has adopted the published protocols and standards of practice for cyanide management. The code, which is available at www.cyanidecode.org, is a voluntary industry initiative developed under the auspices of the United Nations Environment Programme (UNEP) and the International Council on Mining and Metals (ICMM), was launched in May 2002.

The code has two major parts:

  • a commitment by signatories to manage cyanide in a responsible manner; and
  • the practices that must be followed to ensure this.

AngloGold Ashanti became a signatory to the code in 2005.

AngloGold Ashanti is well on its way to compliance with the code and internal audits have been concluded at all operations in anticipation of external auditing.

  • In January, Sunrise Dam in Australia was audited against 31 code categories and was found to be compliant with 29 categories and substantially compliant with two categories.
  • In October 2004, CC&V was audited internally against 31 categories of the Code and was found to be fully compliant.

Cyanide usage by AngloGold Ashanti operations during 2005 amounted to 31,939,528 kg. Note that in 2004, cyanide usage by the former Ashanti operations (in Ghana and Guinea) was excluded.

The following table reports cyanide usage by operation in 2005.

Cyanide use (kg)
Country 2005    2004
Argentina 560,000  
           1,478,000
Brazil** 1,037,000  
Australia 1,671,551   1,535,842
Ghana 5,954,000   *
Guinea 3,354,000   *
Mali** 6,873,000  
                       
Namibia 814,441 10,157,000
       
Tanzania 2,497,400  
South Africa*** 7,182,330    16,851,000
USA 1,995,806    2,189,254
Total 31,939,528    32,211,096*
The former Ashanti operations in Ghana and Guinea did not report for the year 2004.
**  Total cyanide usage by operations and not attributable usage. Note that the company reports attributable production, that is, that portion of production, that is attributable to the company as a percentage of ownership.
***  The significant decrease in cyanide usage at the South Africa operations is as a result of the closure of Ergo.

Cyanide management in Australia

AngloGold Ashanti Australia has taken a leading role in the gold industry in Australia by engaging in discussions with the National Industrial Chemicals Notification and Assessment Scheme (NICNAS) and its review of the Priority Existing Chemical (PEC) assessment process for sodium cyanide. Monitoring data provided by 10 leading gold mining companies, together with site visits and further discussions with industry representatives including the Australian Gold Council and the Minerals Council of Australia will assist NICNAS in fully understanding the management of sodium cyanide by the Australian gold mining industry.

This review has focussed on fauna mortalities associated with exposure to elevated CNWAD (weak acid dissociable cyanide) levels in tailings discharges as a potential environmental risk. Fauna mortalities associated with exposure to elevated CNWAD levels in tailings discharges have been recognised as a potential environmental risk of the Boddington Gold Mine expansion. Historic evidence of fauna mortalities at the mine, particularly in relation to avian fauna (Fairy Martins), suggests that the potential risks require careful management.

Similar risks of fauna mortalities associated with exposure to elevated CNWAD levels in tailings discharges at Sunrise Dam have been addressed by managing CNWAD discharges to the lowest levels practicable. The design of the tailings facility incorporates the release of thickened tailings from a central, raised discharge point so as to limit the extent of surface ‘ponding’, thus reducing the facility’s attractiveness to wildlife.

The hyper-saline composition of the discharge solution may further discourage fauna from using ponded water and this, together with other strategies to reduce/eliminate the impact on the local fauna, is being investigated in collaboration with the Australian Centre for Minerals Extension & Research (ACMER) as part of an international study (including the Sadiola mine site in West Africa. (See case study: Protecting birdlife at Sadiola and Yatela.)

In addition to addressing the potential risks to wildlife associated with cyanide, Sunrise Dam has addressed the impact of fauna mortalities associated with tailings entrapment by building an electrified fence around the tailings facility to prevent access by the local fauna.


Mine rehabilitation and closure

The disturbance of land remains one of the most visible impacts of mining operations, particularly opencast mining with the creation of pits, surface infrastructure, and rock and tailings storage facilities. EIAs conducted prior to the commencement of mining have as their aim the identification and minimisation of these and other impacts. Mitigating measures identified are then incorporated within the operation’s EMS and the operation is then bound to undertake these as mining progresses. Where possible, rehabilitation of disturbed areas is carried out concurrently with mining operations so as to minimise the amount of disturbance at any one time. Rehabilitation standards are usually regulated by the relevant national and regional authorities.

As new operations are developed and commissioned, older mines cease operation and are closed. In an environmental sense, true closure may often only be achieved long after mining has ceased and involves extensive planning and close collaboration with the regulatory authorities to obviate any unwanted environmental consequences and satisfy regulatory requirements.

A number of closures are currently in progress:

  • Closure of the Alamatoula pit at Yatela in Mali is currently under way. (See case study: Planning and implementing closure at Alamatoula, Yatela.)
  • The closure programme for the Big Springs operation in the United States continued with costs of about $80,000 incurred in 2005. These costs covered implementation of the long-term passive water management programs at the mine and mill and water quality and biological monitoring. The Big Springs operation, which ceased milling in 1994, has completed all of its major reclamation activities, has maintained and monitored the performance of the closure measures and is additionally in the process of seeking bond release.
  • With the official cessation of gold production on 30 March 2005, Ergo moved into full closure mode. As from that date, all activities conducted at Ergo were aligned with achieving closure certificates in terms of section 43 of the MPRDA. Approval from the relevant government departments for the detailed closure plans for the Daggafontein and Brakpan tailings storage facilities were obtained in 2005.
  • The Mina Velha decommissioning process in Brazil continued in 2005. The clean-up project for the whole area, which includes dismantling/re-construction of a storm water drainage system, is under way. An expert archaeological team has been hired to follow up the project considering that some very old items of equipment were found during excavation activities. (See Report to Society 2003 case study: Beyond the life of mine – model decommissioning plan at Mina Velha.)
  • Also in Brazil, as part of the Old Tailings Deposits (OTD) Agreement, two sites have been rehabilitated – Morro do Galo and Galo. The next site scheduled to be rehabilitated is Resende in May 2006. It is expected that this programme will have been completed by August 2006 at an estimated cost of $500,000.
  • Decommissioning of the Engenho d’Água Mine is underway although the rehabilitation programme was concluded in December 2004. A final report is being prepared for submission to the Mining Resources Department (DNPM).

Environmental closure continues at Ergo

The world’s largest tailings retreatment operation, Ergo, was closed in 2005 after nearly 30 years of operation. While many closure activities have been undertaken during recent years, the environmental closure activities have now begun in earnest.

The main activities undertaken during the year were:

  • continued hydraulic and mechanical removal of material at some reclamation sites, either via the Brakpan plant to the Brakpan tailings storage facility (TSF), or consolidated on nearby grit dumps. This is required either in terms of contractual obligations with landowners or to reduce the number of long-term liabilities associated with residue deposits;
  • flushing and cleaning of Brakpan plant;
  • marketing of redundant assets;
  • slope reshaping at Brakpan TSF;
  • slope ‘armouring’ at Daggafontein TSF; and
  • investigating alternative methods for radiation screening and decontamination of pipelines in order to maximise their resale value (i.e. so that they can be sold as pipes rather than as scrap).

Achieving closure of tailings dams remains a significant financial and technical challenge. Other challenges going forward are the:

  • maximisation of asset values;
  • radiation clearance of serviceable pipelines;
  • recovery of usable materials;
  • residual and latent impacts related to groundwater pollution and soil pollution at reclamation sites; and
  • extent of rehabilitation of partially reclaimed old tailings dams, and in relation to unused mining rights on old tailings dams.

Resource use and waste generation

AngloGold Ashanti is committed to reducing the use of, and improving the efficient use of, scarce environmental resources such as energy, water, timber and other materials. Apart from the environmental advantages of reducing the use of such raw materials, the group can also potentially achieve significant cost savings.

Environmental targets are set by the individual operating mines or business units as they apply their own EMSs which reflect the priorities unique to them. Information on resource use and waste generation is collected and recorded at site level.

Water usage

Varying site conditions, mining and treatment processes, and the availability of water dictate to a large degree the use of water and the level of efficiency achieved.

Examples of programmes/initiatives in place at an operational level:

  • A water Management Guide was developed in the Australia region to ensure that the interaction of mining and exploration activities with hydrological aspects of the environment does not result in over-use, unplanned wastage or adverse environmental or community impacts on water resources.
  • CC&V uses a probabilistic water balance model (developed with the assistance of Golder Associates) to guide storage capacity sizing, account for meteorological events and evaporative losses, manage solution movements through the heap leach facility, and to assess current and future water needs (inputs) to the project. This model provides for predictions of volumes of solution in inventory over time as impacted by seasonal factors and changes in operating parameters.

In 2004, CC&V instituted a new water conservation measure that involves the burial of the drip irrigation lines on the surface of the heap leach facility. Recycling of water contained with the heap leach facility is a fundamental element of the facility design, construction and operation.

In South Africa, water management is of particular concern. Four mining companies operate in the Klerksdorp, Orkney, Stilfontein, Hartebeestfontein (KOSH) area, namely, Buffelsfontein gold mine, formerly owned by DRDGOLD, Harmony Gold Mining Company Limited, Stilfontein Gold Mining Company Limited and AngloGold Ashanti. All of these companies operate upstream from AngloGold Ashanti’s mining operations and, in the past, these mines have been obliged to continue pumping underground water, even once their mining operations have ceased. When Buffelsfontein was placed into provisional liquidation on 22 March 2005, there was some uncertainty as to whether or not the pumping operations would continue at Stilfontein and Buffelsfontein. DRDGOLD has denied having any obligation regarding a contribution towards the pumping of underground water in the area.

As a result of this uncertainty, AngloGold Ashanti launched an urgent interdict on 12 April 2005 against DRDGOLD Limited, Buffelsfontein Gold Mines Limited, Stilfontein Gold Mining Company Limited, Harmony Gold Mining Company Limited, Hartebeestfontein Gold Mining Company Limited, the minister of minerals and energy, the minister of water affairs and forestry, and the minister of environmental affairs and tourism. AngloGold Ashanti applied to court for an order directing the mining companies to continue pumping and extracting underground water at their mine shafts and for the ministers to issue directives to the mining companies to continue with pumping at their mines, to take the necessary measures to prevent further pollution or degradation of the KOSH area, and to make the area safe.

As a result, the minister of water affairs and forestry issued directives that pumping should continue, and for AngloGold Ashanti, DRDGOLD, Harmony and Stilfontein to contribute equally to the costs. AngloGold Ashanti, DRDGOLD and Harmony have, under protest, complied with the directives but Stilfontein has refused to comply and is facing court action from the state in this regard. (See case study: Mine closure stretches environmental legislation.)

The DME and the Department of Water Affairs and Forestry (DWAF) have recommended that companies involved in mining areas such as Klerksdorp and Carletonville, collectively design a regional closure plan for these geographic areas, in addition to the normal mine closure plans.

Total water usage by AngloGold Ashanti amounted to 78,458,736 m3 in 2005.

Total water usage (m3 per annum)
Country 2005   2004
Argentina 1,200,000    
        3,025,041
Brazil** 3,827,904  
Australia 2,989,962   3,628,164
Ghana 15,670,000   *
Guinea 3,717,191   *
Mali** 17,093,115    
        
Namibia 1,031,554 32,440,460
       
Tanzania 4,268,816  
South Africa*** 27,086,783   49,629,937
USA 1,573,411   1,638,830
Total 78,458,736   90,363,232
The former Ashanti operations in Ghana and Guinea did not report for the year 2004.
**  Total water usage by operations and not attributable usage. Note that the company reports attributable production, that is, that portion of production, that is attributable to the company as a percentage of ownership.
***  The significant decrease in water usage at the South Africa operations is as a result of the closure of Ergo.
Energy usage

Energy usage is both a substantial factor in environmental management globally, and is a major cost driver, particularly in underground mining. In its efforts to conserve energy, AngloGold Ashanti is focused on ensuring the efficient use of energy and on developing and implementing renewable energy sources.

During 2004, AngloGold Ashanti together with Anglo American plc completed a technology strategy project in respect of an energy platform which has as its objective the reduction of the group's energy intensity year-on-year. The target is to save 1 % per annum over the next 10 years, with the compounded total about 15%.

AngloGold Ashanti has registered a 6.7 % reduction in electrical energy consumption from 2004 to 2005. This included a 60% reduction at Ergo (closing), 14% reduction at Savuka (right sizing), and an increase of 32% at Moab Khotsong that is coming into production. The other business units had also generally lower energy use. During the year, the Sunrise Dam mine implemented a solar power pumping system to manage and control the water levels on the surface of the tailings dam, as well as a control system to use wind generated power for the purpose of ground water level control.

Total energy use by AngloGold Ashanti operations in 2005 was 29,213,073 GJ.

Total energy usage (GJ)
Country 2005   2004  
Argentina 725,832    
    3,115,907  
Brazil**      
Australia 2,149,981   2,294,075  
Ghana 3,142,796   *  
Guinea 4,057,888   *  
Mali** 1,530,354    
         
Namibia 227,524 7,453,150  
         
Tanzania 1,896,088    
South Africa 14,880,141   17,099,157  
USA 1,328,301   1,241,179  
Total 29,213,073   31,203,528  
* The former Ashanti operations in Ghana and Guinea did not report for the year 2004.
** Total energy usage by operations and not attributable usage. Note that the company reports attributable production, that is, that portion of production, that is attributable to the company as a percentage of ownership.
*** The significant decrease in energy usage at the South Africa operations is as a result of the closure of Ergo.

Biodiversity

The need for perserving biodiversity and the ongoing threats to habitat continue to be the subject of global debate. AngloGold Ashanti, through its participation in the ICMM’s Biodiversity Taskforce, is engaged with the IUCN (World Conservation Union) in a dialogue on mining and biodiversity.

In South Africa, a first-phase biodiversity assessment (desktop study) was completed for the Vaal River and West Wits operations.

No formally defined protected areas or sensitive areas exist in the Vaal River or West Wits operations. However, Ergo, which is in the process of closing is situated in close proximity to the Blesbokspruit, a Ramsar-listed wetland system. The Vaal River operations are situated adjacent to the Vaal River which is the country’s most important river system, hosting a number of significant riverine wetlands as well as fauna and flora species.

The South African operations are all situated within the highveld grassland biome which is considered to be one of the most threatened regions in South Africa, with 60 to 80% irreversibly transformed, mainly by agriculture and residential development, and only 2% formally conserved. A number of preliminary Biodiversity Management Units (BMUs), which are areas with homogenous biodiversity (for vegetation, terrestrial and aquatic fauna), have been identified.

The next phase, commencing 2006, will identify specific objectives, programmes and targets for the management of biodiversity (compilation of a Biodiversity Management Action Plan).

In Brazil, most of Anglogold Ashanti operations are situated in biodiversity rich areas such as the Atlantic Forest and Cerrado (Cuiabá Mine, Lamego and Córrego do Sítio). The decline of the Atlantic rainforests, mainly as a result of urbanisation and agricultural development, remain a high conservation concern within Brazil and internationally. For every hectare of Atlantic Forest land cleared for mining operations, the company rehabilitates twice the area using indigenous species. The company has been actively involved in the formal establishment and support of conservation reserves and now has approximately. 1000 ha of land within the Natural Property Private Resource (NPPR) category. The Nova Lima environmental office is fully engaged with state environmental authorities and the legal environmental process. The department works closely with local universities who have been contracted to contribute to management plans and provide inventories of biodiversity in these areas. There is large number of species that inhabitat these areas. Some species have been classified as endangered, while others are classified as vulnerable or at lower risk.


Climate change

The Kyoto Protocol, an international and legally binding agreement to reduce greenhouse gas emissions worldwide, came into force on 16 February 2005. The Kyoto Protocol requires the 126 countries that have signed the agreement to reduce their emissions of greenhouse gases to 5.2% below 1990 levels in an effort to combat climate change. It had to be ratified by 55 industrial nations, representing 55% of the world’s emissions. Russia ratified the convention at the end of 2004. The United States and Australia have refused to ratify the convention. South Africa has acceded to the convention.

In Western Australia, the government has announced the creation of a Greenhouse Task Force to advise the government on viable strategies to manage greenhouse emissions from the stationary energy sector. The EPA has released a Guidance Note on Minimising Greenhouse Gases which specifically addressed the minimisation of greenhouse emissions from significant new or expanding operations.

The State Government is also in the process of developing a State Greenhouse Strategy which will set the wider policy context for greenhouse gas management. Carbon dioxide is the major greenhouse gas in Australia and climate change will have significant impacts in Australia.

The company will participate in debate on environmental matters at international, national and local levels.

AngloGold Ashanti is committed to participating in debate on environmental matters at international, national and local levels. Some of the contributions the group has made internationally include membership of and active participation in the ICMM and the Global Reporting Initiative (GRI) as organisational stakeholders.

As part of its environmental strategy, AngloGold Ashanti actively participates in law-making processes in the countries in which it operates. This is often facilitated by participation in mining associations (for example, the Chamber of Mines of South Africa and the Minerals Council of Australia).



Report to Society 2005