Iron Ore Mining Dams
Brazil shuts 47 mining dams deemed unsafe
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 ...
Mine tailings dams: Characteristics, failure, environmental impacts
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, …
Brazilian deluge halts giant iron ore mines, triggers dam …
Heavy rainfall is disrupting southeastern Brazil's giant iron ore industry, regulators dispatched to monitor any impact on tailings dams. Brazilian deluge halts giant iron ore mines, triggers ...
Brazilian miners to tighten up tailings self-regulations
A similar accident in 2015 affected an iron ore mine operated by Samarco, a joint venture between BHP and Vale. The Fundão tailings dam burst became the worst environmental disaster in Brazil's ...
Vale expects final agreement for Mariana dam reparations
Mining company Vale expects to reach a final agreement with authorities for reparations for the collapse of the Samarco tailings dam by the end of the first half of this year, the company told ...
Vale's mining dams are still a risk, company must do more, …
Some of the mines linked to the dams that Vitorelli's team regard as unsafe are vital to Vale's plans to recover lost iron ore production and grow capacity to 450 million tonnes per year, a ...
Iron Ore
In 1915 the first major iron ore mine in Australia was opened at a massive hematite deposit at Iron Knob by BHP Pty Ltd. Since then some 200 Mt of high-grade ore has been mined from five massive hematite deposits in the Middleback Range. ... The most well known example is Olympic Dam, which contains significant volumes of hematite-rich rock ...
Guali Iron Ore Mines
It is one of the largest iron ore blocks in the country, covering an area of 358.258 Ha. The block contains high-quality iron ore deposits and is estimated to contain around 198 million tonnes of iron ore reserves with …
As iron ore prices collapsed, so did waste dams
Between 2002 and 2011, the world experienced an iron-ore boom, as China's grew at a two-digit rate. Demand for resources to build houses and factories rose. Chinese growth made mining companies like Vale extremely profitable. ... There are 790 mining waste dams in Brazil, 204 have high potential for causing damage
Vale sees 10% of its iron ore production coming from …
The firm, one of the world's largest iron ore producers, on Wednesday revised its 2024 outlook upwards and now expects to produce up to 330 million tons this …
Metal concentrations and biological effects from …
Dam B1 was built in 1976 by the Ferteco Mining Company to receive iron ore tailings from the Córrego do Feijão and Jangada mines until it became inactive in 2016, reaching approximately 12 ...
Original features of Vale's tailings dam may have been
New research out of ETH Zurich suggests that certain features of the tailings dam at Vale's Corrego do Feijao iron ore mine in Brumadinho, southeastern Brazil, may have been the cause of the ...
Minas Gerais signs MoU with tech company to monitor tailings dams
Following the collapse of a dam at Vale's (NYSE:VALE) Corrego do Feijão iron ore mine back in January, the southeastern Brazilian state of Minas Gerais signed a Memorandum of Understanding with ...
Assessment of the use potential of iron ore tailings in the …
The iron ore tailings (IOT) used in this work were collected from four Class III high environmental risk iron ore tailings-dams [26]. These (Fig. A.1) were selected based on the associated social and environmental potential risks, as well as economic relevance, as described in the dams inventory of the Minas Gerais State [27]. All four …
Brazilian iron ore supply disruptions to be expected – Report
WoodMac reached the conclusion of the supply hitch after analyzing all 226 iron ore tailings dams that the South American country has. Then, the firm's experts identified those that are of the ...
New global tailings standard guidelines aim for zero harm
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.
Adaption of microbial communities to the hostile …
In November 2015, two iron ore tailing dams collapsed in the city of Mariana, Brazil. The dams' collapse generated a wave of approximately 50 million m 3 of a mixture of mining waste and water. It was a major environmental tragedy in Brazilian history, which damaged rivers, and cities 660 km away in the Doce River basin until it reached the ocean coast.
Reuse of iron ore tailings from tailings dams as pigment …
Fig. 1 shows the latest failures in tailings dams that occurred in Brazil since 1975 (Ávila, 2012), along with iron ore's export price and volume (DNPM, 2016).All accidents occurred in the state of Minas Gerais, which houses the largest number of iron ore tailings dams in the country, and the second largest population.
Advanced analysis of satellite data reveals ground …
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 …
Vale declares force majeure on some contracts …
The force majeure is the latest sign of how the Jan. 25 disaster at the tailings dam at Vale's Corrego do Feijao iron ore mine in Brazil's mining heartland of Minas Gerais, which killed 142 ...
Scientists now know how the Brumadinho dam disaster …
In January 2019, a dam holding back mining sludge at the Córrego do Feijão iron ore mine in Brumadinho, southeastern Brazil, collapsed. Around 10 million cubic meters (2.6 billion gallons) of ...
Australian Aboriginal group opposes billionaire miner's
Australia is considering new legislation to protect Aboriginal heritage after Rio, in the process of building an iron ore mine, destroyed the 46,000-year-old sites in Western Australia state that ...
The slip surface mechanism of delayed failure of the …
On 25 th January 2019, a tailings dam at the Córrego do Feijão iron ore mine, in the Brumadinho city, Brazil, failed suddenly, killing 270 people and seriously …
Miners need more engineers to meet new tailings dam safety standard
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 ...
Vale triggers emergency protocol at Ouro Preto dam
Brazilian iron ore miner Vale SA on Thursday said it had preemptively triggered an emergency protocol at its Forquilha IV dam which processes waste from its Fábrica mine near the historic town of ...
Brazil bans upstream mining dams after Vale's latest disaster
Although more than 80 upstream dams made ANM's list, the vast majority belong to small miners, many of which are used in the production of minerals other than iron ore.
Iron Ore – Tailing Dam Reclamation – MT RELAUNCH
Iron Ore – Sorting Low Grade Deposit Benefitiation; Mineral Sands – Improve of Process Performance; Mineral Sands Mining – Decrease Transport Cost of Raw Feed Material; Iron Ore – Tailing Dam Reclamation; Products & Services. Equipment. Spirals & Gravity Separation; Advanced Surge Bin (Lyons Unit) Mobile Mining Unit; Magnetic separation
Investor group turns up heat on mining tailings dam laggards
The Investor Mining and Tailings Safety Initiative was launched in August 2020 in response to the Brumadinho disaster in Brazil where 270 people were killed when a tailings dam collapsed.
An insight into failure of iron ore mine tailings dams
In the past, many failures of these iron ore mine tailings storage facilities/dams have been reported worldwide in different forms. ... It has been found that …
There's a Massive, Hidden Lake of Mining Residue Above …
The decision made national headlines, MPR reports, and overnight the U.S. lost one-twelfth of its iron ore production. ... Their very lawyerly missive demanded that the agency require Northshore Mining to obtain dam safety permits for Milepost 7; asked for set dam safety and mining permit terms; requested that a heavily redacted 2012 dam break ...
Belinga iron ore mine and Belinga dam, Gabon
1 billion tons iron ore, at 30 million tons per year. The iron mine and the dams, and the railway would have a total cost of over 2 billion dollars. The Belinga dam would have an installed capacity of 50 MW, a second dam Grand Pubara would have 250 MW. Chinese investment in mining has been increasing in Gabon.
An insight into failure of iron ore mine tailings dams
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 instabilities, 6.25% due to foundation ...
Samarco dam disaster: dealing with the fallout of a tragedy
For Samarco, the operator of the Germano iron ore mine and its defective tailings dams, as well as Samarco's joint venture owners BHP and Vale, those two and a half years have been marked by a dogged and ongoing legal pursuit. A series of lawsuits has plagued the mining giants, with federal prosecutors and civil groups seeking …
Scientists now know how the Brumadinho dam disaster …
On 25 January 2019, a tailings dam at the Córrego do Feijão iron ore mine in Brumadinho, Brazil, failed suddenly without warning. Two hundred and seventy people were killed as 9.7Mm3 of stored tailings …
'Permanent state of fear': 2 years after disaster, mine tailings …
On Jan. 25, 2019, a large dam full of mining waste from the Corrego do Feijao iron ore mine owned by Vale SA ruptured and sent a mudslide downstream toward Brumadinho, …
Brazil confirms potential $18 bln deal with miners involved in …
The collapse of the dam at a Samarco iron ore mine near the city of Mariana nine years ago unleashed a wave of toxic tailings that killed 19 people, left …
Vale says routine check revealed cracks in dam, stability …
In a securities filing, the company said the issue concerns the Forquilha III dam at the Fabrica iron ore mine, located in the city of Ouro Preto, in the southeastern Brazilian state of Minas Gerais.
Brazil deluge exposes Vale's lingering waste risk …
Tailings flow following the collapse of a dam at Vale's Córrego do Feijão mine in Brazil in January 2019. ... affecting about 1.8 million metric tons of iron ore exports from the state.