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ORE2_Tailings Potential Failure Causality Analysis

ORE2_Tailings Potential Failure Causality Analysis is one of the features of Riskope’s tailings dam specific application. Indeed ORE2_Tailings looks at the causes of dam failure rather then the reasons why dams fail (the “failure modes”). That is because the root cause of a dam failure is typically the result of a combination of deviances. Recent forensic studies on major catastrophic failures have eloquently demonstrated that. Normalization of deviance Catastrophic failures, like most major accidents are indeed always generated by an…

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Climate change historic prediction

In 1938 the Quarterly Journal of the Royal Meteorological Society published a Climate change historic prediction. An article by Guy Steward Callendar discussed the artificial production of carbon dioxide and its influence on atmospheric temperature. Artificial production of carbon dioxide and its influence on temperature That paper is reportedly the first alert about a phenomenon that has since preoccupied scores of researchers and is becoming main stream reason for ubiquitous protests and even riots. I do not know if Mr Callendar…

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Cognitive biases apply to tailings discussions

Cognitive biases apply to tailings discussions more than one could think. Indeed, cognitive biases can cloud debates and oftentimes lead to worrisome “alternative facts” bordering with fake news. Cognitive biases are likely hidden in glossy documents, websites, seemingly authoritative statistical approaches which are then oftentimes referenced by inattentive readers. The final effect is of course to perpetrate the cognitive drifts. Original authors foster the noble cause of reducing the risks posed by the hazardous structures used to contain tailings, i.e.…

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Notes on Global Tailings Standard Draft for Public Consultation

In follow-up to Aidan Davy’s (ICMM) keynote session at TMW2019, here are our Notes on Global Tailings Standard Draft for Public Consultation. To this date the three co-conveners (UNEP, ICMM and PRI) reportedly did not endorse the draft. Positive Notes on Global Tailings Standard Draft for Public Consultation We found the current draft to be an overall well written document. It encompasses important points on: human rights (see chapter 5 on “what people want” in our latest book) conflict of…

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Facts about worldwide tailings dam performances

Reliable facts about worldwide tailings dam performances are hard to come by. Emotions or politically driven approaches often lead to fake news in mining which feed media eager to sell copies. Indeed, “wannabe” comprehensive reviews of tailings dam failures oftentimes also draw conclusion that may at first feel right. However, under closer scrutiny, they are far from being realistic for a variety of reasons we will endeavor to discuss today. Counting accidents Taxonomy of accidents A reasonable approach is to…

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Tailings dam failure and risk confusion

Nosso Senhora do Livramento in Mato Grosso, Brazil is an example of tailings dam failure and risk confusion. The dam failure reportedly injured two.  Available optical imagery showed a rather contained spill in a flat area at the toe. What we know on the Nosso Senhora do Livramento in Mato Grosso tailings dam At failure, the structure was reportedly 15 m high with a storage volume of 580,000 m³. The material released by the dambreak spread up to 2km downstream.…

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Risk definition is paramount amid tailings problem

Risk definition is paramount amid tailings problem. A recent example is the Almaden Ixtaca Project, Mexico. We read in a publicly available information: “The mine plan has a dry stack filtered tailings facility, and co disposal with waste rock with no tailings dam, eliminating the risk of a tailings dam failure.” We salute the effort to reduce from inception a source of multiple hazards and hence risks generated by the tailings dam. However we want to discuss a few notions…

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Risk culture at Boeing vs Mining

Risk culture at Boeing vs Mining looks at the Boeing’s special committee re-evaluation of procedures and compares them to mining world issues. Indeed, in the aftermath of the Boeing 737 Max, Boeing created a special committee. The intention is to better their projects safety procedures. Perhaps something similar to the initiative ICMM has launched lately for the mining industry. That is  in the aftermath of recent catastrophic tailings dams accidents. The ICMM report is not yet available, so, in the…

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