Report and appendices to the report available on the bottom of this web page. Appendices are relatively technical.
BC Chief Inspector of Mines - The Mount Polley tailings dam, owned by Imperial Metals, breached 4 August 2014, releasing its free pond water and a portion of the tailings into Polley Lake. The spill flooded Polley Lake, creating a plug at Hazeltine Creek, and continued into nearby Quesnel Lake and Cariboo River. The cause of the dam breach and subsequent tailings spill has been investigated with a final report published 31 January 2015, the Independent Expert Engineering Investigation and Review Panel assessment of the Mount Polley Tailings Storage Facility Breach.
At approximately 12:28 p.m. local time on January 25, 2019, tailings dam B-I at Vale S.A.'s Córrego do Feijão Iron Ore Mine ("Dam I"), located 9 kilometers (km) north-east of Brumadinho, in the state of Minas Gerais, Brazil, suffered a sudden failure, resulting in a catastrophic mudflow that traveled rapidly downstream. This report presents results and interpretation of the assessment of the technical cause(s) of the failure of the Dam I at the Córrego do Feijão Iron Ore Mine (the "Investigation")
Independent Expert Panel - The Mount Polley tailings dam, owned by Imperial Metals, breached 4 August 2014, releasing its free pond water and a portion of the tailings into Polley Lake. The spill flooded Polley Lake, creating a plug at Hazeltine Creek, and continued into nearby Quesnel Lake and Cariboo River. The cause of the dam breach and subsequent tailings spill has been investigated with a final report published 31 January 2015, the Independent Expert Engineering Investigation and Review Panel assessment of the Mount Polley Tailings Storage Facility Breach
The Cadia tailings dam, owned by Newcrest and in New South Wales Australia, failed on March 9, 2018. Extensive geological investigations, including drilling and sampling activities to characterise the site, laboratory tests, both routine and advanced, were performed to determine the range of properties exhibited by these materials, and Advanced numerical simulations of both deformation behaviour and ultimate failure states were computed to validate the hypotheses of the cause(s) of the Event under consideration.
Root Cause Analysis of the December 22, 2008 Failure of the Ash Disposal Cells at the Tennessee Valley Authority (TVA) Kingston Fossil Plant in Roane County, Tennessee. This report summarizes field exploration, laboratory testing, analysis and the evaluation of probable failure modes leading to failure.
On 19th July 1985, a mineral waste facility made up of two tailings dams collapsed in the Stava valley (Municipality of Tesero, Province of Trento, Italian Alps). This facility served a fluorite mine and was raised over a period of more than 20 years in order to decant, consolidate and store the tailings resulting from the froth flotation process of the Prestavèl mine and other fluorite mines of Trentino, South Tyrol and Lombardy.