The guidelines, organized around six topic areas, 15 principles and 77 auditable requirements, add new requirements for independent oversight of tailings facilities design and management.

A Brazilian court has ordered mining giant Vale (NYSE:VALE) to halt operations at its Brucutu iron ore mine, the largest in Minas Gerais state, following last month's tailings dam disaster at ...

The disaster occurred on November 5 2015, when the Fundão tailings dam at the Germano iron ore mine near Mariana, Minas Gerais, suffered a failure, resulting in flooding that devastated ...

In January 2019, a dam holding waste water from Vale's (VALE) iron ore mine in the town of Brumadinho burst, burying the workers' cafeteria and dozens of homes …

The most widespread type of dam used to store mine waste is nearly twice as unstable as the average tailings facility, a global study showed on Friday, highlighting the risk of so-called ...

The who, the what and the why of mining waste dams Introduction. ... Twenty people were killed and it was Brazil's worst environmental disaster to date; some 33 million cubic metres of iron ore tailings were released into the vital water source, the river Doce. A million people along the river were affected and the waste travelled over 500km ...

Mining companies need more skilled engineers if they are to meet strict new global safety standards for tailings dams aimed at preventing catastrophic failures like those in recent years that have ...

The mine produced iron ore, and while it was one of Vale's smaller mines, it still produced 7.8 million tons of iron ore in 2017 and had been running for years. The …

Catastrophic failure of a tailings dam at an iron ore mine complex in Brumadinho, Brazil, on 25th January 2019 released 11.7 million m3 of tailings downstream. Although reportedly monitored using ...

A tailings dam at a Brazilian iron ore operation owned by local mining giant Vale (NYSE:VALE) burst Friday, releasing a river of sludge that covered nearby buildings and forced the evacuation of ...

Dams like the one that failed are, in essence, lakes of thick, semi-hardened mud, consisting of water and the solid byproducts of ore mining, which are known as tailings.

The ratio of tailings to concentrate is commonly very high, generally around 200:1 (Lottermoser, 2007).Moreover, as the point of peak metal production is surpassed, the extraction of lower grade ore is an established long-term trend (Mason et al., 2010).For example, in Australia the average Cu grade was c. 10% in 1885 but it fell to 1% by 2005, …

ABSTRACT Mine tailings dams are surface impoundment structures consisting of raised embankments that are built to contain mine tailings and mill effluents. In the past, many failures of these iron ore mine tailings storage facilities/dams have been reported worldwide in different forms. In this paper, an attempt has been made to review …

A Brazilian court has ordered iron ore producer Samarco, along with its owners Vale and BHP, to pay R$47.6bn ($9.7bn) in compensation for a dam collapse that triggered one of the country's worst ...

Communities hit by a dam disaster in Brazil two years ago which killed 270 people will get a $7bn (£5bn) payout. The Brumadinho dam contained waste from an iron ore mine but gave way, unleashing ...

1. Introduction. In January 2019, the Córrego do Feijão mine dam "Barragem I" in Brumadinho (Minas Gerais State -southeastern Brazil), of the VALE S.A, was failured and released about 12 million m 3 of iron ore tailings to the environment, causing the death of 272 people and the destruction of rural (agricultural zones, forests, etc) and urbanized …

It has been found that 31.25% of iron ore mine tailings dams collapsed due to slope instability, 18.75% due to overtopping, 6.25% due to liquefaction-related …

A Brazilian court has ordered iron ore producer Samarco, along with its owners Vale and BHP, to pay R$47.6bn ($9.7bn) in compensation for a dam collapse that triggered one …

Brazil has ordered the immediate closure of 47 mining dams that failed to certify their stability, with more than half of them belonging to Vale (NYSE: VALE), whose Córrego do Feijão iron ore ...

Five Japanese, three Chilean, and two Peruvian gold mine tailings dams failed due to earthquakes. Out of seventeen cases of iron ore tailings dam failures, slope instability, earthquakes, and structural inadequacies were found to be the causes of the failures for six, three, and two mines, respectively.

Federal Police in Minas Gerais, Brazil, released the forensic report on the cause of the tailings liquefaction that led to the dam collapse at Vale's (NYSE: VALE) Córrego do Feijão mining ...

CSN Mining, the main subsidiary of CSN in the sector, is the second largest exporter of iron ore in Brazil and sixth in the world. The high-quality assets of CSN Mining are located in the Iron Quadrangle, which notably include the Casa de Pedra Mine in Congonhas (MG). Iron ore products for export are transported by MRS to the Port of …

Currently, iron ore is the main product extracted and marketed in Brazil (585 million tons in the year 2017), being the most relevant raw material in the generation of residues from the mining activity (Bicca et al. 2018).According to the institute of technological research, for each ton of iron ore processed, about 0.4 tons of waste is …

On Friday, a dam associated with an iron ore mine in the Brazilian state of Minas Gerais breached, unleashing a torrent of water and mine waste into the Paraopeba River. So far, 58 people are ...

The use of geophysical techniques can contribute considerably to the advancement and optimization of subsurface surveys, due to the low costs and time effectiveness. Ground penetrating radar (GPR) has great potential to rapidly and non-invasively evaluate soil in sites affected by the Fundão dam collapse, Southeastern …

A mining dam collapsed and buried more than 150 people. ... the world's largest iron ore producer, says it will close all 10 of its dams in Brazil with a design similar to the one it ran in the ...

At a nearby iron ore mine, the tailings dam—a storage area for the sludgy, fine-grained residues from ore processing, or "tailings"—collapsed. A huge mudslide of …

In 2019, the Brumadinho dam rupture released a massive amount of iron ore mining tailings into the Paraopeba River. Up to now, it remains a public health issue for the local and downstream ...

After 3 years of the Mariana tragedy, on 25th January 2019, another mining dam consisting of iron ore tailings failed catastrophically in the Brumadinho city, Minas …

The dam that collapsed contained waste material - "tailings" - from the iron ore operation at the mine just behind it. The cheapest way to store these by-products is to seal them behind a dam.