Mining for resources extraction may lead to geological and associated environmental changes due to ground movements, collision with mining cavities, and deformation of aquifers. Geological changes may continue in a reclaimed mine area, and the deformed aquifers may entail a breakdown of substrates and an increase in ground water tables, which may cause surface area inundation. Consequently, a r...

This study is a preliminary examination of heavy metal pollution in sediments close to two mine sites in the upper part of the Jequetepeque River Basin, Peru. Sediment concentrations of Al, As, Cd, Cu, Cr, Fe, Hg, Ni, Pb, Sb, Sn, and Zn were analyzed. A comparative study of the trace metal content of sediments shows that the highest concentrations are found at the closest points to the mine sit...

Contamination of soils with heavy metals is widespread and poses a long-term risk to ecosystem health. Abandoned and active mining sites contain residues from ore-processing operations that are characterised by high concentrations of heavy metals. The distribution and mobility characteristics of heavy metals (As, Cd, Cu, Pb, and Zn) in paddy soil samples from Kočani Field (Macedonia) using ICP-...

Gold mines in the Yellowknife, NT, region--in particular, the Giant Mine--operated from 1949-99, releasing 237,000 tonnes of waste arsenic trioxide (As2O3) dust, among other compounds, from gold ore extraction and roasting processes. For the first time, we show the geospatial distribution of roaster-derived emissions of several chemical species beyond the mine property on otherwise undisturbed ...

Tungsten is recognized as a critical metal due to its unique properties, economic importance, and limited sources of supply. It has wide applications where hardness, high density, wear, high-temperature resistance are required, such in mining, construction, energy generation, electronics, aerospace, defense sectors. The two primary tungsten minerals, the only minerals wolframite scheelite. Seco...

Mine waters and tailings generated from mining and mineral processing activities often have detrimental impact on the local environment. One example is acid mine drainage, in which sulphides in the mining waste react with water and oxygen to produce an acidic environment that subsequently dissolves host rock minerals from the waste containing toxic metals and trace elements. Copper is one such ...

The longwall mining method is one of the most applied methods in extracting low-inclined to high-inclined coal seams. Selection of the most suitable extraction equipment is very important in the economical, safety, and productivity aspects of mining operations. There are a lot of parameters affecting the selection of an extraction equipment in mechanized longwall mining in steeply inclined coal...

Bibliographie: Finkeldey, Jasper: Martín Arbeloda: Planetary Mine. Territories of Extraction under Late Capitalism. London & New York: Verso 2020, 288 Seiten, PERIPHERIE – Politik • Ökonomie Kultur, 3+4-2020, S. 492-494. https://doi.org/10.3224/peripherie.v40i3-4.16

A “data deluge” is currently drowning us. Data sources are everywhere, from Web 2.0 to large scientific experiments, from social networks to sensors. This huge amount of data is a mine hiding valuable information. Nowadays, the extraction of knowledge from such ocean is a competitive advantage for most companies. Cloud computing is the emerging technology for large scale data analysis, providin...

Recently many researchers are focusing on the application of Natural Language Processing NLP techniques such as summarization infor mation extraction and text mining One of the challenges with these technologies is developing an accurate Question and Answering System In this paper we will discuss Japanese Q A prob lematic issues that have appeared in my experi mental system My system is impleme...