Miners fail to step up tailings safety
- Opinion piece written by Andrea Hotter
- Responsible Mining Index 2020 Report found that the Investor Mining and Tailings Safety Initiative improved transparency about TSF’s, but the vast majority of miners are still unable to demonstrate effectiveness of their management of TSF risks and responsive actions
- Learn more about the Investor Mining and Tailings Safety Initiative in this free webinar
- Find out how Decipher’s Tailings solution can help with the reporting and monitoring of your tailings facilities, including the ability to demonstrate the management of risks and actions
When a tailings dam ruptured in the state of Minas Gerais in southeast Brazil last year, it was a harsh reminder for the mining sector that it needs to consistently operate within the parameters of strict controls and stay alert to potentially tragic risks.
The disaster – at Vale’s Feijão mine in Brumadinho – led to the deaths of 270 people after the ruptured dam flooded a nearby community.
Just over a year later, and it would appear that not only has the mining industry been slow to learn lessons from the tragedy, but also that not a huge amount has improved since.
As the report notes, prior to the Brumadinho disaster there was no global public register of TSF – mining companies were generally not publicly disclosing even the location of their TSF, let alone information on how safe they were. It has been estimated that there are around 18,000 TSF worldwide, of which roughly 3,500 are currently active. But without a global register the scale of the risks is unclear; it is also uncertain which company has responsibility for which facilities.
It is not as if it is a new issue, or one that will go away. The mining industry is always going to have to deal with the storage of tailings, the residual waste generated as byproduct of its processes. Those tailings are typically piped into large surface impoundments and held in place by earth-fill embankment dams, which can become unstable over time.
When the Feijão mine dam ruptured and the alarm was raised, a group of investors spoke up. Led by the Church of England Pensions Board and Swedish Council of Ethics of the AP Funds, they set up the Investor Mining & Tailings Safety Initiative and demanded action.
The investor group requested over 700 extractive companies to publicly share TSF information and called for a new independent and publicly accessible international standard for tailings dams.
Although many miners declared Brumadinho to be a wake-up call for the sector, the response was mixed, to say the least.
Roughly half the companies responded to the request for data, including 45 of the 50 biggest mining firms. A multi-stakeholder group co-convened by the United Nations Environment Programme, the Principles for Responsible Investment and the International Council on Mining and Metals, meanwhile set up a group to create a global standard.
The good news is that the appeal for tailings information has significantly improved the availability of basic data on TSF and allowed for higher contributions to the Foundation’s RMI report. Nearly half the 38 companies assessed in the RMI report publicly disclosed the number and exact location of their TSF, mostly due to their response to the investor request.
But the bad news is that a number of key aspects have not improved; in fact, some have worsened.
These include an increasingly heavy reliance on risky structures, no improvement in tracking the effectiveness of tailings risk management and a lack of local information on risks and emergency procedures in the case of tailings incidents.
One alarming trend is that companies are planning to increase the volume of tailings stored in upstream-constructed TSF, the same type of dam that failed in Brumadinho. The report found that 30% of all tailings will be stored in these structures, up from 24% in the 2018 report. Of this 30%, some 92% are currently classified as having a high hazard potential.
Similarly, only a handful of the 38 miners assessed in the RMI report show evidence of having conducted third-party audits or reviews of the effectiveness of their TSF management, and those reviews undertaken were typically quite limited in scope. Even fewer companies show evidence of having taken responsive actions on the basis of these reviews, despite not a single mining company scoring more than 50% on this indicator.
Not exactly a ringing endorsement for the mining sector, which is already facing a trust deficit among stakeholders, investors, financiers and the broader general public.
Similarly, the report determined that just 10% of the 180 mine sites assessed publicly disclose the areas that could be impacted by a tailings dam failure, and even fewer tell local communities what to do in the event of an incident.
There have been a number of recommendations for next steps. But far, far more needs to be done.
At a time when mining companies are battening down the hatches to deal with the impacts of the Covid-19 pandemic, it will be even more critical to keep the pressure on the sector to ensure its work to improve its record with tailings significantly improves.
Clearly, some miners are doing better than others on the tailings front.
But do not forget that the Brumadinho tragedy was not the first rupture – there is a long list of preceding accidents at other mining companies’ TSF. Most recent among these is the failure of the Fundão tailings dam at the Samarco mine in Mariana, also in Minas Gerais, which ruptured and flooded the Rio Doce basin in 2015.
Judging by the current state of affairs, it is sadly likely that Brumadinho will not be the last tailings tragedy the mining industry has to deal with either.
Originally published by Metal Bulletin.
What is the Investor Mining and Tailings Safety Initiative?
Just days after the Brumadinho dam collapse, a group of investors co-led by the Church of England (CoE) Pensions Board and the United Nations Environment Program (UNEP) announced the Investor Mining and Tailings Initiative, calling on 727 extractive mining companies to disclose information on their tailings facilities to form a global independent database.On the one year anniversary, the group launched the first public database on tailings storage facilities (TSF). Prior to that, there had been no central database detailing the location and quantity of tailings, and as a result, no clear indication on the number of tailings around the world.
What did this mean for the mining companies?
This presented mining companies with a massive challenge of assembling data-sets that were often large, complex and stored in several locations, or even lost with corporate knowledge loss. One company estimated that it took one person (per site), six weeks to collect and prepare the data.
How can companies prepare for the next round of reports?
Launching the public database was the first step in providing transparency. The CoE and UNEP remain highly motivated to deliver change in the safe management of tailings facilities across the world, and as such will be making more calls for disclosures, and for the reports to be updated regularly.
Check out Decipher’s free webinar, The Investor Mining and Tailings Safety Initiative: What’s Next?
Hear from one of the driving forces behind the database and learn about:
- The Mining and Tailings Safety Initiative (insights, key findings, what’s coming, and how to prepare for the next round of questions)
- The upcoming global tailings standards
- Best practices and recommendations
- Available reporting and monitoring tools
What is the Investor Mining and Tailings Safety Initiative?
Following the recent tailings dam failures, The Investor Mining and Tailings Safety Initiative was established by a group of institutional investors active in the extractive industries representing more than $13.1 trillion in assets under management. Governed through a Steering Committee chaired by the Church of England Pensions Board and the Swedish Council of Ethics of the AP Funds, the group has called upon 727 extractive mining companies to disclose information in relation to their tailings storage facilities to form an online database.
How many companies have disclosed information about their TSFs?
As of the 20th of December 2019, 46 per cent of companies contacted responded to the request. 40 of the top 50 mining companies have made disclosures which has resulted in information about thousands of individual tailings dams being made public on company websites. All 23 of 23 publicly owned companies that are members of the International Council on Mining & Metals (ICMM) responded and fully disclosed information about their TSFs.
How many tailings dams have had stability issues?
Company disclosures to investors have revealed that 10% (166 out of 1,635) of the tailings dams reported to have had stability issues in their history.
What tailings reporting and monitoring tools are available?
Using Decipher, you can start to organise and store your tailings storage facility data in the one place, making it easier to prepare for the next round of Church of England reports:
– Easily visualise all of your sites and simply click on the dams to see all of the relevant data and reports
– Reduce confusion, human error, and inefficiencies in reporting by providing internal stakeholders with a central repository of data on your tailings facilities
– Access key data and information from multiple departments to take a holistic approach to your tailings reporting and monitoring
– Reduce the time spent and associated costs preparing reports by creating templates which extract relevant information in a particular format, such as the Church of England report
– Decipher is designed to be securely accessed by industry, regulators, designers and operators involved in the management of TSFs. Easily setup security access levels to ensure stakeholders only see information that is relevant to them, and apply business rules, approval layers and track changes to ensure data is correct
– A Single Sign-On (SSO) integration also ensures that users are managed more easily
Request a demo of Decipher’s TSF Monitoring & Reporting tool
- Speak to our team for a free demo of our Tailings Monitoring solution
- See how our solutions help manage industry stakeholder engagement and operator and regulator compliance requirements here
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