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MetricMine closure, rehabilitation and post-closure monitoring

Mine sites by closure and rehabilitation status

Measurement answer

What this metric measures

Reports the number and percentage of mine sites with closure and rehabilitation plans, actively undergoing closure and rehabilitation, and closed and rehabilitated with post-completion monitoring in place.

Specification

Metric specification

Result format
Structured table
Unit
count; % — source-defined reporting unit
Reporting basis
Reporting period used by the reporting organization.
Aggregation
Count mine sites in each reported status and calculate each status percentage against the total number of mine sites in the reporting boundary; retain overlapping categories rather than summing them.
Pillar
Environmental
Topic
Mine closure, rehabilitation and post-closure monitoring
Controlled domain
Nature, biodiversity and land
Entity type
Metric

Reporting boundary

Mine sites included in the reporting organization's disclosed reporting boundary.

Verified source occurrences

Framework coverage

This is one canonical metric. The bindings below show every verified framework occurrence without creating duplicate metric pages. Edition, disclosure, role, and relationship remain source-specific.

  • Adopting Disclosure

    CDP Full Corporate Questionnaire 2026

    mine-site-closure-rehabilitation-status
    Publisher
    CDP
    Edition
    Full Corporate Questionnaire and Reporting Guidance 2026 v1.3, revised 6 August 2026
    Requirement
    Conditional
    Relationship
    Reuses Canonical Metric
    Mapping outcome
    Reused
    Source locator
    Q11.16.1, numeric field 1 | Q11.16.1, numeric field 2
    Open official framework source
  • Adopting Disclosure

    TNFD sector guidance

    Source evidence
    Publisher
    Taskforce on Nature-related Financial Disclosures
    Edition
    Final English sector guidance collection through August 2026 (17 documents)
    Requirement
    Not Specified
    Relationship
    Defines Disclosure
    Mapping outcome
    Direct Evidence
    Source locator
    TNFD additional sector guidance, Page 88, sector metric table, metric MM.A23.3 | Source evidence: number and percentage of mine sites with closure and rehabilitation plans, actively undergoing closure and rehabilitation, and closed and rehabilitated with post-completion monitoring; categories may overlap. | Page 88, sector metric table, MM.A23.3
    Open official framework source
  • Adopting Disclosure

    TNFD sector guidance

    MM.A23.3
    Publisher
    Taskforce on Nature-related Financial Disclosures
    Edition
    Version 1.0, June 2024
    Requirement
    Recommended
    Relationship
    Maps Source Identity
    Mapping outcome
    Published
    Source locator
    Page 88, sector metric table, MM.A23.3
    Open official framework source

Value structure

Dimensions and units

Unit
count; % — source-defined reporting unit
Reporting basis
Reporting period used by the reporting organization.

Unit meaning: Values use count; % under the disclosed TNFD sector-guidance method, reporting period and boundary.

Table fields and units

  • Closure and rehabilitation status
  • Number of mine sites
  • Percentage of mine sites
  • Whether post-completion monitoring is in place
  • Explanation of category overlap

Published dimensions

  • Closure and rehabilitation status
  • Mine site
  • Post-completion monitoring status
  • Count of mine sites
  • Percentage of mine sites

Disclosure method

Formula information

Status
Not applicable
Formula type
Structured Disclosure

Disclosure form

No single formula

Report the source-defined result with its stated fields and method disclosures. MM.A23.3 specifies reportable site counts and percentages across three explicit closure and rehabilitation statuses. It is a standalone structured outcome metric, not a generic impact-management narrative. The potentially overlapping status categories are retained as a material method characteristic.

Verified sources

Evidence and status sources

Sustopedia checked each record-specific claim directly against primary publisher material. Labels distinguish current measurement authority from future compatibility and corroborative, legal, edition, or method status context. Corroborative evidence can support a stated limitation but cannot establish the core measurement by itself.

Measurement evidence

  • Measurement evidenceChecked 30 August 2026

    TNFD additional sector guidance collection

    Publisher
    Taskforce on Nature-related Financial Disclosures
    Edition
    Final English sector guidance collection through August 2026 (17 documents)
    Locator
    TNFD additional sector guidance, Page 88, sector metric table, metric MM.A23.3 | Source evidence: number and percentage of mine sites with closure and rehabilitation plans, actively undergoing closure and rehabilitation, and closed and rehabilitated with post-completion monitoring; categories may overlap. | Page 88, sector metric table, MM.A23.3

    Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “Mine sites by closure and rehabilitation status”.

    Open official source

Use with context

Interpretation boundaries

Method disclosures required

Source-edition basis: TNFD sector guidance, Final English sector guidance collection through August 2026 (17 documents).

  • Definition of a mine site and mine-site reporting boundary.
  • Definitions of closure plan, rehabilitation plan, active closure and rehabilitation, closed and rehabilitated, and post-completion monitoring.
  • Whether and how the reported status categories overlap.
  • Denominator used for each reported percentage.

Record-specific limitations

  • The three status categories may overlap and therefore counts and percentages across categories must not be summed.
  • Comparability depends on the organization's definitions of closure, rehabilitation, post-completion monitoring and the mine-site reporting boundary.
  • A site may be represented in more than one status where the reported status definitions permit overlap.

Interpret this metric with the stated reporting boundary, period convention, value shape, and unit. Results prepared with different boundaries or conventions may not be directly comparable.

Measurement evidence supports the core record-specific claims described above. Corroborative evidence can support limitations, while compatibility and status sources provide their separately labelled context. None of these cards by itself determines an organisation's legal applicability, filing readiness, assurance status, or compliance conclusion.