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Management and mitigation of acid mine drainage in South Africa : input for mineral beneficiation in Africa
This book ascertains that there are three schools of thought regarding the acid mine drainage (AMD) challenge in South Africa and elsewhere. The first school of thought, is that which has resigned itself to fate. The second school of thought is held by those who have hope that the problem can be managed, albeit with a considerable degree of difficulty. The third school comprises those that are energised to try (on a large scale) the various AMD remediation technologies and innovations brought to the fore by various research and development bodies. This book thus presents multifaceted potential channels for dealing with AMD challenges.
Book
Mercury, Mining, and Empire
On the basis of an examination of the colonial mercury and
silver production processes and related labor systems, Mercury,
Mining, and Empire explores the effects of mercury pollution in
colonial Huancavelica, Peru, and Potosí, in present-day Bolivia.
The book presents a multifaceted and interwoven tale of what
colonial exploitation of indigenous peoples and resources left in
its wake. It is a socio-ecological history that explores the toxic
interrelationships between mercury and silver production, urban
environments, and the people who lived and worked in them. Nicholas
A. Robins tells the story of how native peoples in the region were
conscripted into the noxious ranks of foot soldiers of
proto-globalism, and how their fate, and that of their communities,
was-and still is-chained to it.
eBook
The Chilean miners' rescue
The story of the daring rescue of 33 miners trapped in a Chilean mine in 2010.
Book
A history of mining in Latin America : from the colonial era to the present
For twenty-five years, Kendall Brown studied Potosí, Spanish America's greatest silver producer and perhaps the world's most famous mining district. He read about the flood of silver that flowed from its Cerro Rico and learned of the toil of its miners. Potosí symbolized fabulous wealth and unbelievable suffering. New World bullion stimulated the formation of the first world economy but at the same time it had profound consequences for labor, as mine operators and refiners resorted to extreme forms of coercion to secure workers. In many cases the environment also suffered devastating harm.
All of this occurred in the name of wealth for individual entrepreneurs, companies, and the ruling states. Yet the question remains of how much economic development mining managed to produce in Latin America and what were its social and ecological consequences. Brown's focus on the legendary mines at Potosí and comparison of its operations to those of other mines in Latin America is a well-written and accessible study that is the first to span the colonial era to the present.
eBook
Trapped : how the world rescued 33 miners from 2,000 feet below the Chilean desert
\"A middle grade nonfiction title about thirty-three miners trapped in a copper-gold mine in San Jose, Chile, and how experts from around the world--from drillers to astronauts to submarine specialists--came together to make their remarkable rescue possible\"-- Provided by publisher.
Book
Role of temperature, wind, and precipitation in heavy metal contamination at copper mines: a review
The increasing demand for minerals pressurizing the mining authorities to extract low-grade ore results in more mining waste and degradation of the environment. The main aim of review was to understand the role of climatic factors (temperature, wind, and precipitation) in dispersal and mobility of heavy metals in soil, water, and vegetation in Cu mining region. The major source of contamination in the mining sector is tailings, overburden rocks, and abandoned mines. The contaminates or fine particles of sulfide-rich mining waste follow two major pathways for the dispersal: aerial and leaching. Sulfides on exposure to oxygen and water generate acid mine drainage which results in leaching of heavy metals. The pit water of abandoned mines is also a cause of concern which contaminates the groundwater resources. Climatic factors such as temperature, precipitation, and wind significantly influence the paths of contaminate dispersal. In arid/semi-arid regions, high temperature forms fine-grained efflorescence salts on tailings or exposed surficial mines which are carried away by strong winds/water and contaminates the surroundings. In wet regions, the leaching of heavy metals from both tailings and overburden rocks sulfides results in environmental contamination. The application of impermeable layers is highly recommended. The climatic factors (temperature, wind, and precipitation) significantly control the dispersal and mobility of heavy metals in Cu mining region. The implementation of waste management policies and pollution control technologies is recommended after considering the climatic factors.
Journal Article
Characteristics of Nickel Laterite Mine Waste in Caraga Region, Philippines and Its Potential Utilization
Nickel laterite mining is one of the sources of nickel-iron material used for producing steel and various materials. This mining activity leaves waste in the mine, including rocks, overburden, silt, and dust. Characterization is an important primary step in understanding waste for proper management, utilization, and disposal. The pH, organic matter, and elemental composition are analyzed in this study. The pH of nickel laterite mine waste is neutral to moderately alkaline, which makes it unlikely to cause acid mine drainage, which is one of the most prevailing environmental problems of mines. The organic matter content also showed favorable results for plant growth. However, the macronutrients necessary for the plant are too high, making it less favorable for agricultural utilization. Elemental composition shows the presence of nickel and other elements lower than the economically acceptable level. However, processing the lower grade can be the best option when all higher-grade resources are exhausted. The nickel laterite mine waste can be reused to further extract the metals when sources of higher grades are depleted, repurposed such as in the production of bricks and ceramics, or mined-out mines can be repurposed for renewable energy sources such as solar and wind farms.
Journal Article