Mine closure & liability advisory

Understand closure liabilities and their effect on value and funding.

We assess closure obligations, cost estimates and financial assurance, showing how cost and timing uncertainty affect asset value, cash flow and funding need

WHAT CLOSURE CHANGES

Closure obligations affect value long before mining ends. Gaps in cost estimates, uncertain timing and security requirements can change cash flow, funding capacity and acquisition terms.

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Costs.

Does the estimate cover the work?

Review estimate scope, exclusions and assumptions to identify gaps and uncertainty in future closure spending.

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Timing.

When could spending arise?

Test how early closure, extended care and maintenance or longer treatment periods change cash flow and funding needs.

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Funding.

How much funding is tied up?

Assess how security requirements, collateral and instrument terms affect cash availability and credit capacity.

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Obligations.

What commitments remain?

Map rehabilitation, monitoring and stakeholder commitments, identifying gaps in the evidence and assigned responsibilities.

ENGAGEMENT OPTIONS

Understand the exposure. Test the estimate.

Closure Readiness and Liability Assessment

Before your next closure, investment or funding decision.

We assess closure obligations, plans, cost estimates and financial assurance, identifying material gaps and risks. We reconcile costs, provisions and security, explain the effects on value and liquidity, and prioritise what needs resolving for your next decision.

What you receive:

Closure obligations and evidence map
Cost, provision and security reconciliation
Readiness gaps and closure risk register
Decision memo and priority action plan

Discuss this service

Independent Closure Cost and Liability Review

Independent scrutiny of the costs behind your decision.

With a qualified closure specialist, we independently challenge an existing cost estimate, its scope and material assumptions. We test cost and timing scenarios, identify supported adjustments and explain the implications for asset value, financial assurance and funding.

What you receive:

Findings report and priority actions
Supported cost adjustments or ranges
Cost and timing scenario results
Value and financial assurance implications

Discuss this service

Either engagement can be commissioned directly. Scope, deliverables, specialist input, timing and fees are agreed before work begins. The depth of review and scenario analysis reflects your decision and the evidence available.

ENGAGEMENTS IN DETAIL

How closure evidence informs your decision.

Each engagement addresses a defined closure, investment or funding decision. We examine obligations, costs and uncertainty, then explain their implications for value, liquidity and the next step.

Closure Readiness and Liability Assessment

We assess whether existing closure plans, costs and funding arrangements support your next decision. Across six dimensions, we identify missing obligations, inconsistent assumptions and material uncertainties, then prioritise actions and specialist work.

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Obligations and evidence: Map closure commitments, supporting plans and responsible parties, identifying missing, outdated or inconsistent evidence.

Financial reconciliation: Reconcile cost estimates, accounting provisions and security, explaining differences in scope, timing and measurement basis.

Risk and scenarios: Assess early closure, care and maintenance, long-term treatment and security calls, quantifying material financial effects where supported.

Decision priorities: Define readiness gaps, required specialist work and priority actions, with owners and dependencies for the next decision.

Who it’s for

Owners, operators, regulators, acquirers and capital providers assessing closure obligations, evidence gaps and funding exposure before an investment, financing, closure or financial assurance decision.

Outcome

A clear conclusion on closure readiness and financial exposure, supported by an obligation and evidence map, cost, provision and security reconciliation, risk and gap registers, and prioritised actions with owners and dependencies.

Discuss your assessment

INDEPENDENT CLOSURE REVIEW

Independent Closure Cost and Liability Review

With a qualified closure specialist, we challenge an existing estimate, its scope and assumptions. We test cost and timing scenarios, identify supported adjustments and explain what the findings mean for asset value, financial assurance and funding decisions.

Independent scrutiny of costs, risks and assumptions.

Closure scope and assumptions review

Supported cost adjustments and ranges

Closure timing and treatment scenarios

Valuation and funding implications

Who it’s for

Owners, regulators, acquirers and capital providers needing an independent review of closure costs for investment, financing or assurance decisions.

Outcome

A findings report with supported cost adjustments, scenario results and implications for value and funding, plus priority actions and evidence gaps.

Discuss your closure estimate review

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FINANCIAL EXPOSURE

Closure costs, provisions and security.

Closure cost estimates, accounting provisions and financial assurance serve different purposes. We reconcile their scope, timing and measurement basis, explain why the amounts differ, and assess the consequences for asset value, cash flow and funding capacity.

Closure cost estimate

The estimated cost of completing closure work, including rehabilitation, monitoring and treatment, based on the defined scope, schedule and supporting assumptions.

Accounting provision

The liability recognised in the accounts under applicable accounting requirements. Its measurement may differ from the estimated closure expenditure or required security.

Financial assurance

The security required to support closure obligations. Its amount, form and collateral requirements can affect cash availability, credit capacity and funding needs.

WHAT WE EXAMINE

Evidence behind the assessment.

A credible closure assessment connects the work required, its expected cost and the resources available to fund it. We examine the evidence below, with review depth and specialist input matched to your decision.

Closure plans and obligations

We review existing closure plans, documented permit conditions, rehabilitation commitments and stakeholder agreements. We check whether the proposed work, completion criteria and assigned responsibilities are reflected consistently in the supporting evidence.This helps identify obligations missing from the estimate, unresolved commitments and assumptions requiring specialist review. Material gaps are translated into actions and potential cost, timing or funding exposure.

Cost estimates and assumptions

We examine the estimate’s scope, quantities, unit rates, exclusions, contingency and escalation assumptions, drawing on qualified closure specialists for technical judgements. We check the estimate’s date, supporting studies and treatment of rehabilitation, demolition, monitoring and long-term care.This establishes which costs are supported, where adjustments or ranges are justified, and which uncertainties could materially affect the decision.

Timing and long-term exposure

We examine the closure schedule, progressive rehabilitation, care and maintenance assumptions, and the expected duration of monitoring and treatment. Where the evidence supports it, we test alternative timing, sudden closure and longer post-closure obligations.This shows when expenditure could arise, how long it may continue and how different scenarios affect cash flow, asset value and funding needs.

Provisions and financial assurance

We review the documented basis of accounting provisions alongside closure estimates, security requirements and existing assurance arrangements. We examine differences in scope, timing and measurement, together with instrument terms, collateral requirements and review or release conditions.This explains why the amounts differ and where security commitments could constrain liquidity or credit capacity, while keeping accounting liabilities, closure expenditure and financial assurance distinct.

Minesmart leads the economic analysis and investment conclusions. Qualified specialists retain responsibility for engineering, environmental, legal and accounting opinions. Site verification, detailed design and regulatory submissions are separately scoped where required.

FAQ

Questions clients ask before engaging

Understand which engagement fits your decision, what information we need and how we work with specialists. Scope, responsibilities and fees are agreed before work begins.

Do you prepare closure plans or carry out the engineering work?

Our core services assess closure readiness, review existing estimates and explain the economic implications. Qualified closure specialists support technical judgements and retain responsibility for their opinions. Detailed closure-plan preparation, engineering design, site verification and implementation require separate appointments. We identify where that work is needed and use the resulting evidence in our analysis.

Which engagement should we choose, and can either stand alone?

Choose the Closure Readiness and Liability Assessment to understand the available evidence, reconcile costs, provisions and security, and identify priority gaps. Choose the Independent Closure Cost and Liability Review when you need a specified estimate challenged in greater depth. Either can be commissioned directly. Any follow-on work is scoped separately around a defined need.

We already have a closure cost estimate. What does Minesmart add?

We examine whether its scope, assumptions and timing support the decision you face. With a qualified closure specialist, we challenge material inputs, identify supported adjustments and test relevant scenarios. We then explain the consequences for value, cash flow and funding. Findings may support the existing estimate or identify changes and further evidence needed.

What information do you need, and what if there are gaps?

We typically start with the current closure plan, cost model, schedule, documented obligations, supporting studies, accounting provision and financial assurance arrangements. A readiness assessment can identify gaps in incomplete evidence. A detailed cost review requires enough support to challenge the estimate meaningfully. We distinguish supported conclusions from uncertainties requiring further specialist work.

How do you establish independence for a closure review?

Before accepting a review, we assess prior involvement, financial interests and relevant client relationships. We do not present a review of our own work as independent. Our fees are agreed for the work and are not contingent on a transaction completing or a particular finding. Material conflicts determine whether we can accept the appointment and in what capacity.

Can your work support an acquisition, lending or regulatory review?

Yes. We can scope closure analysis for transaction due diligence, lending decisions or a regulator’s review of an operator’s estimate. We agree the intended users, decision deadline and reliance requirements before starting. The work identifies material exposure and unresolved issues; formal submissions, certifications and professional opinions require the appropriate specialists and separate scope.

How are the scope, timing and fees agreed?

We start with your decision, the asset and the evidence available. Our proposal defines the deliverables, depth of review, scenarios, specialist input, responsibilities and intended use of the report. Timing and fees reflect those requirements and any information gaps. Additional assets, revised estimates or further analysis are agreed separately before the scope expands.

Get Started

Bring clarity to your next investment decision.

Tell us what you need to decide, what information you have and when you need an answer. We’ll discuss how Minesmart can help and propose a focused scope with clear deliverables.

Discuss a decision