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2025: When governance matures in structure, but operational reality still determines the outcome.

Throughout 2025, the mining sector continued to exhibit a recurring paradox. Governance, as a formal architecture, advanced. There are more standards, more audits, more public commitments, and more common language about risk. At the same time, incidents continued to occur with known mechanisms, almost always linked to the same core: operational execution and barrier control discipline did not keep pace with the sophistication of the discourse.

In other words, the challenge of 2025 was not “understand what to do"It was about doing it in a consistent, verifiable, and funded way, especially outside the ecosystem of greater scrutiny and capital pressure."

To accurately diagnose these gaps, it is helpful to use the following as a lens: World Mine Tailings Failures (WMTF). The WMTF explicitly positions itself as a platform to support global research on tailings failures, focusing on root cause analysis, loss prevention, and trend analysis. Its most valuable contribution, however, is not rhetoric, but rather its ability to shift the debate from the anecdotal to the systemic.

 

The conversation begins with the denominator, and the denominator remains fragile.

The sector still operates with statisticscomfortable"which do not hold up. The WMTF states directly that two widely repeated statistics, including the idea of something like '3,500 TSFs worldwideThese claims have no factual basis. The consequence of this is operational and financial: without a minimally correct denominator, any discussion about failure rates, investment prioritization, and the sizing of oversight becomes a convenient but dangerous approximation.

Based on compilations and evidence it considers most defensible, the WMTF works with an order of magnitude of 29,000 to 35,000 tailings facilities in its global portfolio, including active, inactive, and abandoned facilities. This completely changes the mental map of risk. A portfolio of this scale implies extensive legacies, heterogeneity of standards, regulatory gaps, and, above all, a large number of structures that do not appear in... disclosures corporate.

An important counterpoint here is the Global Tailings Portal, launched in 2020, which provides detailed data on more than 1,800 tailings dams reported by large companies in response to investor requests. It is useful, but it also highlights the structural limitation: voluntary transparency, by itself, does not cover most of the universe and does not replace official, complete inventories maintained over time.

 

Physical scale and inventory growth: risk is not static.

Even where governance has improved, the physics of the problem has become more challenging. The WMTF discusses projected growth in tailings and concentration of risk in active facilities, including the expected increase in load and volume over time, with a significant fraction of catastrophic failures historically associated with structures in operation. When the system demands more tailings per unit of product, governance needs to move beyond simply “compliance control"and turn capacity management and operational margins, including water, drainage, elevations, maintenance and decision discipline."

THE Responsible Mining FoundationIn summarizing the work of the WMTF, it explicitly points to the scale of the global liability, mentioning the order of magnitude of 29,000–35,000 TSFs and approximately 223 billion tons of stored tailings, including active, inactive, and abandoned structures. This number is not a detail. It defines the true “system size"that governance needs to control."

 

The recurring mistake: confusing danger with risk and, therefore, prioritizing incorrectly.

There is a technical point that explains much of the misalignment between governance and practice: many organizations have improved their rating of “potential danger"But they still fail to translate that into real risk management, driven by condition, performance, and responsiveness."

WMTF itself is explicit: A high potential danger does not, in itself, imply a high risk.Risk cannot be presumed solely based on danger. Danger defines the level of care required. Risk demands current status, actionable mechanisms, prevailing uncertainties, instrumentation trends, and, most importantly, decision governance when signs appear.

This is where 2025 becomes instructive. We're getting better at "classify” and “report...but it is still unequal in ensuring that the ranking governs the tough decisions, those that cost production, CAPEX, and internal political comfort.

 

What 2025 revealed about the gap between structure and execution.

The recurring pattern, across different geographies and institutional maturities, is not the absence of documentation. It is the silent degradation of barriers, until an operational trigger, often associated with water, exposes the fragility. And water continues to be the great equalizer: when governance fails to maintain hydraulic capacity, drainage, maintenance, and contingency plans as "process control" variables, the structure becomes hostage to the weather, response time, and chance.

Furthermore, 2025 has more forcefully exposed a structural layer of the problem: a significant portion of the world operates outside the ecosystem of transparency and capital pressure that “pull"Governance from the top down. In this context, what defines performance is not what is written, but what is measured, activated, and funded."

 

VinQ Diagnosis: What needs to change for governance to be felt in practice?

True maturity begins when governance ceases to be a set of declarations and becomes an operating system. This requires both portfolio vision and an obsession with detail. Below are the points that, in practice, separate “governance that seems goodof “Governance that holds back tailings and water on the worst day..

1) Inventory as a management asset, not as a static report.

Without complete inventories, including legacy structures, governance loses control of its own perimeter. The WMTF insists on the need for government accounting and minimum transparency to reduce information asymmetry and allow for proper prioritization. The direct effect is financial and operational: without knowing what exists, in what condition, under whose responsibility, and with what operational status, there is no way to calibrate the budget for decommissioning, maintenance, and rehabilitation.

2) Water as an operating system and dominant risk variable

Most organizations “he knows"Water matters, but few treat water as a discipline equivalent to production. Water needs capacity, contingency, maintenance, and decision governance. When extreme rainfall, power failure, blockages, erosion, pore pressure transients, and drainage changes come into play, the difference between “compliance” and “control"It becomes evident."

3) TARPs that govern decision-making, with real authority and explicit cost.

Operational triggers cannot be symbolic. They need to be objective, connected to failure modes, supported by instrumentation and qualified inspections, with explicit authority to shut down, reduce hydraulic load, limit deposition, mobilize a response, and escalate to the executive level. Without this, the system returns technical decisions to the political arena of the short term.

4) QA/QC as traceable evidence, not as a presumed routine.

A large part of operational failures does not originate from the “geotechnical model...but from the variability introduced by execution, undocumented changes, and inconsistent quality controls. Robust governance transforms QA/QC into a trail of evidence. This includes geometric compliance, material traceability, as-built Reliable, non-conformity closure, and genuine integration with the engineer of record and independent reviews.

5) Potential danger as a language of caution, risk as a language of decision.

The WMTF makes it clear that hazard is not risk. Maturity occurs when the organization uses hazard to define control rigor and uses risk, based on condition and performance, to define priorities and investments. This shift is what prevents portfolios from "seem"Well governed, but they failed where the actual condition was degraded."

6) Verifiable minimum transparency to reduce shadow zones.

The transparency that truly improves performance isn't propaganda. It's... disclosure A minimum and verifiable overview of inventory, status, critical interventions, incidents, lessons learned, and barrier metrics. Global Tailings Portal This shows the value of this movement, but also highlights its limitations when restricted to a subset of the market. In terms of governance, the objective is not "exhibition"It's about reducing the space where risk becomes cheap due to invisibility."

 

The ultimate governance test that 2025 reinforced.

In 2025, the question that separates maturity from mere appearance became even clearer. It's not about whether a standard has been adopted. It's about whether, tomorrow, with extreme rain, power outages, shift changes, production pressure, and routine disruptions, your system will continue to operate with technical control.

The WMTF exists, in large part, because history shows that the sector excels at learning.in theory"However, it is inconsistent in consolidating learning into repeatable practice. The next leap in maturity will not come from an additional framework, but from transforming governance into operational performance of barriers, with a complete inventory, treated water as a critical variable, triggers with real authority, and QA/QC as evidence."

This is where VinQ positions itself, not as a producer of reports, but as a partner to reduce the asymmetry between discourse and reality, and to make governance felt where it matters: in stability, in the water, in everyday life, and in difficult decisions.

Authors:

John Paul dos Santos

Bachelor in Mining Engineering (UFMG), Master in Civil Engineering and Management (University of Glasgow), Specialist in Geotechnical Engineering and Project Management.

Mining Engineer specializing in geotechnics and project management, an international reference in dams and geotechnical structures applied to mining.

Matheus Vicentini

Civil Engineer (Unilavras), Specialist in Geotechnical Engineering (PUC Minas).

Civil Engineer with experience in geotechnics applied to mining, with experience in projects, audits and dam decommissioning works.

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