نتایج جستجو برای: midok copper mine
تعداد نتایج: 105523 فیلتر نتایج به سال:
The socio-ecological impacts of large scale resource extraction are frequently underreported in underdeveloped regions. The open-pit Grasberg mine in Papua, Indonesia, is one of the world's largest copper and gold extraction operations. Grasberg mine tailings are discharged into the lowland Ajkwa River deposition area (ADA) leading to forest inundation and degradation of water bodies critical t...
to construct copper heap leaching structures, a stepped heap of ore is placed over an isolated sloping surface and then washed with sulphuric acid. the isolated bed of such a heap consists of some natural and geosynthetic layers. shear strength parameters between these layers are low, so they form the possible sliding surfaces of the heaps. economic and environmental considerations call for stu...
In this study, the concentrations of Cu, Ni, Pb, Cd, Sr and Mg in hair, lung and femur tissues of Persian Jird as bioindicator species in different regions of Darreh Zereshk copper mine were investigated. In summer of 2012, a systematic random sampling was performed by using snap trap in different parts of the copper mine. Wet digestion method and ICP-OES instrument were applied for measurement...
Traditional ground based monitoring of mining activities are no longer acceptable or sometimes sufficient in terms of assessing sustainable business practices. Remote sensing is increasingly influencing the changing social and management processes of mineral extractions. This study focuses on the application of hyperspectral remote sensing to monitor water and vegetation pollutions at the Dexin...
Background and Objectives: Gold nanoparticles have found many applications in cancer diagnosis and therapy, drug and gene delivery and DNA and protein characterizations. Fungi are extremely good candidates in the synthesis of metal nanoparticles because of their ability to secrete large amounts of enzymes. The aim of this study was biosynthesis of gold nanoparticles by a fungus. Materials and M...
Background: The workers of mines, during a working day, are exposed to stress and psychological pressure that certainly affect the efficiency of their work. This study aimed to determine the level of stress, anxiety, and depression in workers of one copper mine in Kerman Province, Iran. Materials and Methods: In this cross-sectional study, 250 workers of the operation unit of one copper mine...
In this study, two species of algae from two different areas impacted by acid mine drainage (AMD) were analyzed for metal ion accumulation. The two species of algae collected were Klebsormidium and Entransia. Both algal species are located in an area of high metal ion concentrations and low pH (ranging from 2.28 to 2.89). The study assessed the concentration of iron, manganese, zinc, copper and...
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