Whereas moist-tamped specimens of silts and sands are most used in engineering practice to characterize tailings, offshore sediments, fluvial/alluvial deposits, design parameters derived from moist-tamping data sets can be significantly different those obtained slurry or underwater deposition. This study shows that silty sandy may exhibit phase transformation at stress ratios 25% 50% lower than...

Considering the global impact on society due to tailings storage facilities (TSFs) accidents, this article describes a study monitor mine management and prevent mining dam failures, considering analysis of different TSFs real cases. The spatial temporal dynamic behavior supernatant process water pond is studied as critical issue, using remote sensing techniques based multispectral satellite ima...

Abstract Catastrophic failure of a tailings dam at an iron ore mine complex in Brumadinho, Brazil, on 25th January 2019 released 11.7 million m 3 downstream. Although reportedly monitored using array geotechnical techniques, the collapse occurred without any apparent warning. It claimed more than 200 lives and caused considerable environmental damage. Here we present Intermittent Small Baseline...

On 5 November 2015, a large tailing deposit failed in Brazil, releasing an estimated 32.6 to 62 million m3 of iron mining tailings into the environment. Tailings from Fundão Dam flowed down through Gualaxo do Norte and Carmo riverbeds floodplains reached Doce River. Since then, bottom sediments have become enriched Fe(III) oxyhydroxides. Dissimilatory iron-reducing microorganisms (DIRMs) are an...

The collapse of the Fundão tailings dam Samarco mining complex in Mariana, Brazil, was largest disaster world to date with many socio-economic and environmental impacts. Soil affected by severely altered negative impacts for agriculture. We tested whether diluting organic soil would eliminate or at least attenuate ecotoxic effects on plant development performance. cultivated radish, Raphanus sa...

How Mining Releases Toxic Metals Large amounts of waste rock and tailings contaminated with toxic metals can be produced by mine sites. In the case of the Donlin Creek mine, there are only 0.072 ounces of gold for every ton of ore, a figure that does not take into account the waste rock. Toxic substances contained within the rock and tailings are more easily released once these substances are p...

Tailings dams in mining areas frequently experience the phenomenon of haphazard dumping and stacking a large amount tailings waste. Under influence surface runoff groundwater infiltration, heavy metals from waste can migrate to surrounding underground soil, resulting extensive metal pollution. To analyze pollution level ecological risk an abandoned lead–zinc mine dam, this study first employed ...