ISO/PRF TR 24419-2

Mine closure and reclamation – Managing mining legacies — Part 2: Case studies and bibliography

Fermeture et remise en état des mines — Gestion des héritages miniers — Partie 2: Études de cas et bibliographie

General Information

• Status: Not Published
• ICS: 73.020 - Mining and quarrying
• Technical Committee: ISO/TC 82/SC 7 - Mine closure and reclamation management
• Drafting Committee: ISO/TC 82/SC 7 - Mine closure and reclamation management
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Completion Date: 17-Aug-2023

Standards Content (Sample)

ISO/TR 24419-2:2023(E)
ISO TC 82/SC 7/WG 3
Date: 2023-06-19xx
TECHNICAL REPORT
Mine closure and reclamation — Managing mining legacies — Part 2: Case studies and
bibliography
Fermeture et remise en état des mines — Gestion des héritages miniers — Partie 2: Études de cas et
bibliographie

---------------------- Page: 1 ----------------------
ISO/TR 24419-2:2023(E)
© ISO 2023
Commented [eXtyles1]: The reference is to a withdrawn
standard which has been replaced

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no
ISO 20344, Personal protective equipment — Test methods
part of this publication may be reproduced or utilized otherwise in any form or by any means,
for footwear
electronic or mechanical, including photocopying, or posting on the internet or an intranet, without
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prior written permission. Permission can be requested from either ISO at the address below or
ISO’s member body in the country of the requester.
Formatted: Pattern: Clear
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/TR 24419-2:2023(E)
Contents
Foreword . vi
Introduction . vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Design Engagement Process for the Giant Mine Remediation Project, Yellowknife
Northwest Territories, Canada . 1
4.1 Aspect of managing mining legacies . 1
4.2 Recognition of a problem that needed to be resolved . 1
4.3 Steps involved and expertise/stakeholders involved . 1
4.4 Evaluation of performance of this initiative . 2
4.5 Key learnings for others . 2
5 Mining legacy program performance evaluation and reporting - British Columbia
(BC) Canada . 2
5.1 Introduction . 2
5.2 Recognition of a problem that needed to be resolved . 2
5.3 Steps involved and expertise/stakeholders involved . 3
5.4 Evaluation of performance of this initiative . 3
5.5 Key learnings for others . 3
6 Remediation of the abandoned mines in the South Alligator Uranium Field, Northern
Territory, Australia . 3
6.1 Aspect of managing mining legacies . 3
6.2 Background . 3
6.3 Recognition of a problem that needed to be resolved . 3
6.4 Steps involved and expertise/stakeholders involved . 4
6.5 Evaluation of performance of this initiative . 4
6.6 Key learnings for others . 4
7 Valuing traditional knowledge within the Rum Jungle Rehabilitation Project,
Northern Territory, Australia. 4
7.1 Aspect of managing mining legacies . 4
7.2 Recognition of a problem that needed to be resolved . 4
7.3 Steps involved and expertise/stakeholders involved . 5
7.4 Evaluation of performance of this initiative . 5
7.5 Key learnings for others . 5
8 Difficulties encountered during the closure of mines prompted improvements to
legal instruments, Mali . 5
8.1 Context of case study . 5
8.2 The Kalana Mine . 6
8.3 The Syama Mine . 6
© ISO 2023 – All rights reserved iii

---------------------- Page: 3 ----------------------
ISO/TR 24419-2:2023(E)
8.4 The Morila Mine . 6
8.5 Key learnings from these examples for others . 6
9 Government strategy for rehabilitation of abandoned asbestos mines in South Africa
. 7
9.1 Context of case study . 7
9.2 National strategy for derelict and ownerless mines . 7
9.3 Progress and challenges implementing national strategy . 7
9.3.1 Legislative challenges . 7
9.3.2 Process challenges . 8
9.3.3 Technical challenges . 8
10 Managing Biodiversity Offsets and Mining Legacy Rehabilitation & Care, South Africa
. 8
10.1 Recognition of a problem that needed to be resolved . 8
10.1.1 Opportunity for biodiversity offsets . 8
10.2 Existing tools and concepts for biodiversity offsets for mining legacies . 9
10.3 Application of tools and concepts as funding mechanisms . 9
10.4 Application challenges . 10
10.5 Industry and society benefits . 10
11 Potential Limitations of Mechanisms used to fund Mining Legacy Programs, Western
Australia, Australia . 10
11.1 Aspect of managing mining legacies . 10
11.2 Background . 10
11.3 Unanticipated low interest rates . 10
11.4 Key learnings for others . 11
12 Long Term Financing of the perpetual obligations resulting from hard coal mining in
Germany . 11
12.1 Historic context . 11
12.2 Origin of RAG-Stiftung (RAG Foundation) . 11
12.3 The tasks of RAG-Foundation . 11
12.4 Financing perpetual mine management obligations . 11
12.5 Building up the foundation’s assets . 12
12.6 Supporting education, science and culture . 12
12.7 The foundation’s model for the future . 12
12.8 Extract of statutes of relevance to RAG . 12
13 Organising Post-Mining in France . 12
13.1 Background . 12
13.2 Introduction to post-mining legal arrangements . 13
13.3 The French Mining Code . 13
13.4 Progression toward mine closure and lease relinquishment . 14
13.5 Mining Risk Prevention Plans . 14
13.6 Post mining management by the state . 14
13.7 Conclusion . 15
14 National review of abandoned mine land (AML) programs, United States of America
. 15
14.1 Introduction . 15
14.2 Review of hardrock AML programs . 15
14.3 Partnerships . 16
14.4 Cost Challenges . 16
15 Funding and resourcing legacy nickel mine rehabilitation, New Caledonia . 16
15.1 Introduction . 16
iv © ISO 2023 – All rights reserved

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ISO/TR 24419-2:2023(E)
15.2 Establishment of the Nickel Fund to rehabilitate legacy mines . 16
15.3 Estimating the needs of the Nickel Fund . 16
15.4 Management of the Nickel Fund . 17
15.5 Illustrating key challenges with reference to the Thio Valley area . 17
15.6 How the Thio Valley community were engaged . 17
15.7 Benefits from the program in the Thio Valley . 17
15.8 Progress so far in the Thio Valley . 18
15.9 Evaluating performance . 18
15.10 Maintenance of rehabilitated sites . 18
16 Reopening the Otanmäki mine, Finland . 18
16.1 Aspect of managing mining legacies and source . 18
16.2 Recognition of a problem that needed to be resolved . 18
16.3 Steps involved and expertise/stakeholders involved . 19
16.4 Evaluation of performance of this initiative . 19
16.5 Key learnings for others . 19
17 Online monitoring and early alert system for tailings storage facilities (TSF), Chile 20
17.1 Background . 20
17.2 Transparent tailings initiative . 20
17.3 Purpose of initiative . 20
17.4 System design . 21
18 Public Private Partnership funding mode of legacy Green golden Lake coal mining
rehabilitation program, China. 22
18.1 Introduction of China managing mine legacy . 22
18.2 Green Golden Lake coal mining rehabilitation program . 22
18.2.1 Background . 22
18.2.2 Recognition of a problem that needed to be resolved . 23
18.2.3 Recognition of a problem that needed to be resolved . 23
18.2.4 Evaluation of performance of this initiative . 23
18.2.5 Key learning for others . 23
19 Structured case studies . 23
Bibliography . 36
© ISO 2023 – All rights reserved v

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ISO/TR 24419-2:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
Formatted: Adjust space between Latin and Asian text,
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
Adjust space between Asian text and numbers
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documentsdocument should be noted. This document was drafted in accordance
with the editorial rules of the ISO/IEC Directives, Part 2 (see https://www.iso.org/directives-and-
policies.htmlwww.iso.org/directives).
Attention is drawnISO draws attention to the possibility that some of the elementsimplementation of this
document may beinvolve the subjectuse of (a) patent(s). ISO takes no position concerning the evidence,
validity or applicability of any claimed patent rights. in respect thereof. As of the date of publication of
this document, ISO had not received notice of (a) patent(s) which may be required to implement this
document. However, implementers are cautioned that this may not represent the latest information,
which may be obtained from the patent database available at www.iso.org/patents. ISO shall not be held
responsible for identifying any or all such patent rights. Details of any patent rights identified during the
development of the document will be in the Introduction and/or on the ISO list of patent declarations
received (see https://www.iso.org/iso-standards-and-patents.html).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the World
Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
https://www.iso.org/iso/foreword-supplementary-information.html.
Formatted: English (United States)
Formatted: English (United States)
This document was prepared by Technical Committee ISO/TC 82, Mining, Subcommittee SC 7, Mine
closure and reclamation management.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at https://www.iso.org/members.html
vi © ISO 2023 – All rights reserved

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ISO/TR 24419-2:2023(E)
Introduction
This Technical Reportdocument includes case studies and a bibliographyBibliography provided by
working group members and has been separated from the standard so that development of the two
documents proceeded in parallel. These resources provide supporting information and illustration of
various aspects of the Managing Mining Legacymanaging mining legacy standard. While expanding upon
some of the content of the guidance of the standard, it cannot be assumed that a particular strategy that
was applied in one context is directly applicable to another. Not every clause in the standard has a
corresponding case study. Instead, clause activities are revealed in an integrated way as they occur in
practice within these cases. In addition to descriptive case studies, there are some table-format case
studies toward the end, that illustrate how inventories can be structured and developed. There is also a
bibliographyBibliography for further reading elaborating upon certain aspects of the standard and
expanding the resources available to those applying the standard (ISO 24419--1:2023). This
Commented [eXtyles2]: Not found: "ISO 24419-1:2023"
bibliographyBibliography is not fully comprehensive of all global regions but instead were important and
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relevant at the time of preparation of the standard. As management of mining legacies evolves, further
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resources are likely to emerge. It is up to the user to adapt and apply their understandings of the Part
ISO 24419-1 standard and Part 2this document supporting Technical Report to local circumstances.
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© ISO 2023 – All rights reserved vii

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TECHNICAL REPORT ISO/TR 24419-2:2023(E)

Mine closure and reclamation – Managing mining legacies – Part 2: Case
studies and bibliography
1 Scope
This Technical Report document is a supplementary document to the StandardInternational standard for
Commented [eXtyles3]: ISO 24419-1: current stage is
Managing Mining Legaciesmanaging mining legacies (ISO 24419-1) that provides illustrative case studies and 50.00
resources providing further reading. The content provided in this Technical Reportdocument covers various
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regions of the world as a supplement to the Standard (ISO 24419-1). The purpose is to provide insight into specific
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case studies that show how practitioners have addressed mining legacy challenges in practice. This
reportdocument does not provide instructions for managing mining legacies, but instead a resource with insights Formatted: Pattern: Clear
from other practitioners, thereby widening knowledge of what can be required to effectively manage mining
Commented [eXtyles4]: ISO 24419-1: current stage is
legacies.
50.00
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2 Normative references
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The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references, the Formatted: Pattern: Clear
latest edition of the referenced document (including any amendments) applies.
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ISO 24419-1, Mine closure and reclamation –— Managing mining legacies –— Part 1: Requirements and
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recommendations
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3 Terms and definitions
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For the purposes of this document, the terms and definitions given in ISO 24419-1 apply.
50.00
ISO and IEC maintain terminologicalterminology databases for use in standardization at the following addresses:
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50.00
— ISO Online browsing platform: available at https://www.iso.org/obphttps://www.iso.org/obp
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— IEC Electropedia: available at https://www.electropedia.org/
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4 Design Engagement Processengagement process for the Giant Mine Remediation
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Projectgiant mine remediation project, Yellowknife Northwest Territoriesterritories,
failure. (connection error "Error 12031:
Canada
ERROR_INTERNET_CONNECTION_RESET").
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4.1 Aspect of managing mining legacies
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This case study describes stakeholder engagement and consultation for management of a large mining legacy by Adjust space between Asian text and numbers, Tab
the Canadian government to addressing the historic legacy whilst also developing a collaborative engagement stops: Not at 19.85 pt + 39.7 pt + 59.55 pt + 79.4 pt
+ 99.25 pt + 119.05 pt + 138.9 pt + 158.75 pt +
process. See Reference [32].
178.6 pt + 198.45 pt
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© ISO 2023 – All rights reserved 1

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ISO/TR 24419-2:2023(E)
4.2 Recognition of a problem that needed to be resolved
In 1999, the Giant Minegiant mine went into receivership and subsequently became an abandoned mine under the
responsibility of the Government of Canada. The roughly 50-year years period of gold mining resulted in
significant disturbance to the land and water, and severe impacts on the health and lifestyles of local people,
especially Indigenous groups. The project developed an initial remediation plan for the site in 2007 that failed to
receive wide spread public support and a subsequent Environmental Assessment raised significant public
concerns. In 2014, the project team concluded that the remediation plan required a more meaningful engagement
process with stakeholders in order to build public trust and obtain support for the management and remediation
of the abandoned mine.
4.3 Steps involved and expertise/stakeholders involved
In late 2014, the project proposed a 2-year years engagement process to stakeholders that involved a series of
multi-day workshops. Stakeholders had a large role in developing the engagement process and ensuring the
process would be meaningful to them. The series of meetings, reports and workshops addressed public education
and preparation, stakeholder objectives, development of closure options, risk assessment and review, and finally
the evaluation of options for the abandoned mine.
During the engagement process, the project recognized that the Indigenous and other local groups were not
meaningfully engaged on what happened at Giant Mine for almost all of its operating life. More effective
engagement could not address all the wrongs in a 50-year years history, but it could contribute to reconciliation
and a different future. Participants in the engagement process were asked to remember the past and its lessons,
but to focus on how the Giant Mine surface could be managed in the future.
4.4 Evaluation of performance of this initiative
Since the completion of the engagement process in 2016, the stakeholder evaluation results have been used by the
Government of Canada in selecting closure options for Giant Mine. Key decisions informed by the engagement
included the selection of closure options for open pits, tailings areas, water management and future land use. Many
of these options differed significantly from the initial closure plan and the decisions made based on engagement
were communicated back to stakeholders.
A favourable outcome of the engagement process is that while the final plan could not reflect every stakeholder
group’s first choice for closure, there was an understanding of the many other perspectives that need to be
considered in selecting closure options and the management of abandoned mines. The engagement process
significantly increased stakeholder understanding of the mine and improved the project’s relationship with
stakeholders.
The revised Giant Mine Closure Plan was resubmitted for regulatory review and resulted in public support being
voiced for the plan by stakeholders. Regulatory approval for the remediation of the Giant Mine is expected in
August 2020, over 20 years since the site was abandoned by its last owner.
4.5 Key learnings for others
The Giant Mine demonstrated the importance of incorporating meaningful stakeholder input into all aspects of an
abandoned mine, from planning, option selection, through to long-term care, in order to ensure stakeholder
concerns are addressed. This is particularly important where there is a difficult historical legacy, that if left
unaddressed, can make moving the project forward and securing regulatory and other approvals difficult.
2 © ISO 2023 – All rights reserved

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ISO/TR 24419-2:2023(E)
5 Mining legacy program performance evaluation and reporting -— British Columbia
(BC) Canada
5.1 Introduction
5.1 General
Performance reporting on a mi
...

TECHNICAL ISO/TR
REPORT 24419-2
First edition
Mine closure and reclamation –
Managing mining legacies —
Part 2:
Case studies and bibliography
Fermeture et remise en état des mines — Gestion des héritages
miniers —
Partie 2: Études de cas et bibliographie
PROOF/ÉPREUVE
Reference number
ISO/TR 24419-2:2023(E)
© ISO 2023

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ISO/TR 24419-2:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
PROOF/ÉPREUVE © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/TR 24419-2:2023(E)
Contents Page
Foreword . vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Design engagement process for the giant mine remediation project, Yellowknife
Northwest territories, Canada . 1
4.1 Aspect of managing mining legacies . 1
4.2 Recognition of a problem that needed to be resolved . 1
4.3 Steps involved and expertise/stakeholders involved . 2
4.4 Evaluation of performance of this initiative . 2
4.5 Key learnings for others . 2
5 Mining legacy program performance evaluation and reporting — British Columbia
(BC) Canada . 2
5.1 General . 2
5.2 Recognition of a problem that needed to be resolved . 3
5.3 Steps involved and expertise/stakeholders involved . 3
5.4 Evaluation of performance of this initiative . 3
5.5 Key learnings for others . 3
6 Remediation of the abandoned mines in the South Alligator Uranium field,
Northern Territory, Australia . 3
6.1 Aspect of managing mining legacies . 3
6.2 Background . 4
6.3 Recognition of a problem that needed to be resolved . 4
6.4 Steps involved and expertise/stakeholders involved . 4
6.5 Evaluation of performance of this initiative . 4
6.6 Key learnings for others . 4
7 Valuing traditional knowledge within the rum jungle rehabilitation project,
Northern Territory, Australia . 5
7.1 Aspect of managing mining legacies . 5
7.2 Recognition of a problem that needed to be resolved . 5
7.3 Steps involved and expertise/stakeholders involved . 5
7.4 Evaluation of performance of this initiative . 5
7.5 Key learnings for others . 6
8 Difficulties encountered during the closure of mines prompted improvements to
legal instruments, Mali . 6
8.1 Context of case study . 6
8.2 The Kalana Mine . 6
8.3 The Syama mine . 7
8.4 The Morila mine . 7
8.5 Key learnings from these examples for others . 7
9 Government strategy for rehabilitation of abandoned asbestos mines in South
Africa . 7
9.1 Context of case study . 7
9.2 National strategy for derelict and ownerless mines . 8
9.3 Progress and challenges implementing national strategy . 8
9.3.1 Legislative challenges . 8
9.3.2 Process challenges . 8
9.3.3 Technical challenges . 8
iii
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ISO/TR 24419-2:2023(E)
10 Managing biodiversity offsets and mining legacy rehabilitation and care, South
Africa . 9
10.1 Recognition of a problem that needed to be resolved . 9
10.1.1 Opportunity for biodiversity offsets . 9
10.2 Existing tools and concepts for biodiversity offsets for mining legacies . 9
10.3 Application of tools and concepts as funding mechanisms . 10
10.4 Application challenges . 10
10.5 Industry and society benefits . 11
11 (Potential limitations of mechanisms used to fund mining legacy programs,
Western Australia, Australia .11
11.1 Aspect of managing mining legacies . 11
11.2 Background . 11
11.3 Unanticipated low interest rates . 11
11.4 Key learnings for others . 11
12 Long term financing of the perpetual obligations resulting from hard coal mining
in Germany .12
12.1 Historic context. 12
12.2 Origin of RAG-Stiftung (RAG Foundation) .12
12.3 The tasks of RAG-Foundation .12
12.4 Financing perpetual mine management obligations .12
12.5 Building up the foundation’s assets . 13
12.6 Supporting education, science and culture . 13
12.7 The foundation’s model for the future . 13
12.8 Extract of statutes of relevance to RAG . 13
13 Organising post-mining in France .13
13.1 Background . 13
13.2 Introduction to post-mining legal arrangements . 14
13.3 The French mining code . 14
13.4 Progression toward mine closure and lease relinquishment . 15
13.5 Mining risk prevention plans . 15
13.6 Post mining management by the state . 15
13.7 Conclusion . 16
14 National review of abandoned mine land (AML) programs, United States of America .16
14.1 General . 16
14.2 Review of hardrock AML programs . 16
14.3 Partnerships . 17
14.4 Cost challenges . 17
15 Funding and resourcing legacy nickel mine rehabilitation, New Caledonia .17
15.1 General . 17
15.2 Establishment of the Nickel fund to rehabilitate legacy mines . 17
15.3 Estimating the needs of the Nickel fund . 17
15.4 Management of the Nickel fund . 18
15.5 Illustrating key challenges with reference to the Thio Valley area . 18
15.6 How the Thio valley community were engaged . 18
15.7 Benefits from the program in the Thio valley . 18
15.8 Progress so far in the Thio valley . 19
15.9 Evaluating performance . 19
15.10 Maintenance of rehabilitated sites . 19
16 Reopening the Otanmäki mine, Finland .19
16.1 Aspect of managing mining legacies and source . 19
16.2 Recognition of a problem that needed to be resolved . 19
16.3 Steps involved and expertise/stakeholders involved . 20
16.4 Evaluation of performance of this initiative . 20
16.5 Key learnings for others .20
17 Online monitoring and early alert system for tailings storage facilities (TSF), Chile.21
iv
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ISO/TR 24419-2:2023(E)
17.1 Background . 21
17.2 Transparent tailings initiative . 21
17.3 Purpose of initiative . 21
17.4 System design . 22
18 Public private partnership funding mode of legacy Green golden Lake coal mining
rehabilitation program, China .23
18.1 Introduction of China managing mine legacy . 23
18.2 Green Golden Lake coal mining rehabilitation program . 23
18.2.1 Background . 23
18.2.2 Recognition of a problem that needed to be resolved .23
18.2.3 Recognition of a problem that needed to be resolved . 24
18.2.4 Evaluation of performance of this initiative . 24
18.2.5 Key learning for others . 24
19 Structured case studies .24
Bibliography .37
v
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ISO/TR 24419-2:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
notice of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all
such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 82, Mining, Subcommittee SC 7, Mine
closure and reclamation management.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at https://www.iso.org/members.html
vi
PROOF/ÉPREUVE © ISO 2023 – All rights reserved

---------------------- Page: 6 ----------------------
ISO/TR 24419-2:2023(E)
Introduction
This document includes case studies and a Bibliography provided by working group members and has
been separated from the standard so that development of the two documents proceeded in parallel.
These resources provide supporting information and illustration of various aspects of the managing
mining legacy standard. While expanding upon some of the content of the guidance of the standard, it
cannot be assumed that a particular strategy that was applied in one context is directly applicable to
another. Not every clause in the standard has a corresponding case study. Instead, clause activities are
revealed in an integrated way as they occur in practice within these cases. In addition to descriptive
case studies, there are some table-format case studies toward the end, that illustrate how inventories
can be structured and developed. There is also a Bibliography for further reading elaborating upon
certain aspects of the standard and expanding the resources available to those applying ISO 24419-1.
This Bibliography is not fully comprehensive of all global regions but instead were important and
relevant at the time of preparation of the standard. As management of mining legacies evolves, further
resources are likely to emerge. It is up to the user to adapt and apply their understandings of the
ISO 24419-1 and this document supporting Technical Report to local circumstances.
vii
© ISO 2023 – All rights reserved PROOF/ÉPREUVE

---------------------- Page: 7 ----------------------
TECHNICAL REPORT ISO/TR 24419-2:2023(E)
Mine closure and reclamation – Managing mining
legacies —
Part 2:
Case studies and bibliography
1 Scope
This document is a supplementary document to the International standard for managing mining legacies
(ISO 24419-1) that provides illustrative case studies and resources providing further reading. The
content provided in this document covers various regions of the world as a supplement to ISO 24419-1.
The purpose is to provide insight into specific case studies that show how practitioners have addressed
mining legacy challenges in practice. This document does not provide instructions for managing mining
legacies, but instead a resource with insights from other practitioners, thereby widening knowledge of
what can be required to effectively manage mining legacies.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 24419-1, Mine closure and reclamation — Managing mining legacies — Part 1: Requirements and
recommendations
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 24419-1 apply.
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4 Design engagement process for the giant mine remediation project,
Yellowknife Northwest territories, Canada
4.1 Aspect of managing mining legacies
This case study describes stakeholder engagement and consultation for management of a large
mining legacy by the Canadian government to addressing the historic legacy whilst also developing a
collaborative engagement process. See Reference [32].
4.2 Recognition of a problem that needed to be resolved
In 1999, the giant mine went into receivership and subsequently became an abandoned mine under the
responsibility of the Government of Canada. The roughly 50 years period of gold mining resulted in
significant disturbance to the land and water, and severe impacts on the health and lifestyles of local
people, especially Indigenous groups. The project developed an initial remediation plan for the site in
2007 that failed to receive wide spread public support and a subsequent Environmental Assessment
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ISO/TR 24419-2:2023(E)
raised significant public concerns. In 2014, the project team concluded that the remediation plan
required a more meaningful engagement process with stakeholders in order to build public trust and
obtain support for the management and remediation of the abandoned mine.
4.3 Steps involved and expertise/stakeholders involved
In late 2014, the project proposed a 2 years engagement process to stakeholders that involved a series
of multi-day workshops. Stakeholders had a large role in developing the engagement process and
ensuring the process would be meaningful to them. The series of meetings, reports and workshops
addressed public education and preparation, stakeholder objectives, development of closure options,
risk assessment and review, and finally the evaluation of options for the abandoned mine.
During the engagement process, the project recognized that the Indigenous and other local groups
were not meaningfully engaged on what happened at Giant Mine for almost all of its operating life. More
effective engagement could not address all the wrongs in a 50 years history, but it could contribute to
reconciliation and a different future. Participants in the engagement process were asked to remember
the past and its lessons, but to focus on how the Giant Mine surface could be managed in the future.
4.4 Evaluation of performance of this initiative
Since the completion of the engagement process in 2016, the stakeholder evalu
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