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In mechanical engineering, the stability of systems under various forces is critical for designing durable and efficient structures. One fundamental way to explore these concepts is by analyzing systems like two rods connected at a pivot point, O, with a torsional spring of spring constant k at the pivot point. This system is similar in appearance to a scissor jack used to change tires on a car. In this case, the arms of the linkage (equivalent to the rods in this system) are entirely vertical,...
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Tailings facility disclosures reveal stability risks.

Daniel M Franks1, Martin Stringer2, Luis A Torres-Cruz3

  • 1Sustainable Minerals Institute, The University of Queensland, Brisbane, QLD, 4072, Australia. d.franks@uq.edu.au.

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|March 6, 2021
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Summary
This summary is machine-generated.

Global tailings facilities pose significant risks. A comprehensive survey reveals 10% have stability concerns, with active upstream facilities showing higher risks (18.3%) despite governance measures, emphasizing careful management for environmental safety.

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Area of Science:

  • Environmental Science
  • Geotechnical Engineering
  • Risk Management

Background:

  • Tailings facility failures present global environmental and community risks.
  • Limited data previously existed on global risk distribution and facility characteristics for governance.
  • Institutional investors prompted data disclosure from extractive companies.

Purpose of the Study:

  • To compile the most comprehensive global database of tailings facilities.
  • To analyze the risks and characteristics associated with different tailings facility types.
  • To inform global governance of tailings facility stability.

Main Methods:

  • Conducted a survey of tailings facilities disclosed by extractive companies.
  • Compiled a database of 1743 tailings facilities.
  • Analyzed data on construction method, stability, failure consequence, volume, and technology uptake.

Main Results:

  • 10% of facilities reported stability concerns or lack of certification.
  • Active upstream facilities show a higher incidence of stability issues (18.3%) than other types.
  • Stability issues persist in upstream facilities even in high governance settings; in-pit/natural landform and dry-stack facilities report lower incidence.

Conclusions:

  • Upstream tailings facilities present a higher practical risk of stability issues compared to other types.
  • Careful facility management and robust governance are crucial across all construction methods.
  • The findings provide critical insights for improving global tailings facility governance and safety.