نتایج جستجو برای: lead mine
تعداد نتایج: 361945 فیلتر نتایج به سال:
A new type of cosmic-ray experiment is under construction in the Pyhäsalmi mine in the underground laboratory of the University of Oulu, Finland. It aims to study the composition of cosmic rays at and above the knee region. The experiment, called EMMA, will cover approximately 150 m of detector area. The array is capable of measuring the multiplicity and the lateral distribution of underground ...
altogether 20 groundwater samples were collected around the lakan pb and zn mine in iran. samples were analyzed for 8 constituents including fe, pb, hg, mn, zn, cn, so4 and cl using standard method. the results show that the average concentrations of constituents were 0.01, 0.60, 0.10, 0.01, 0.40, 35, 0.01 and 5.95 mg/kg for fe, mn, pb, zn, hg, so4, cn and cl, respectively. the computed contami...
conclusions consistent reductions were observed for all wmsds disorders at the ninth month of the follow-up. it can be inferred that the use of practical and low-cost methods of engineering and administrative interventions together and monitoring the proper implementation of these interventions during a long time may achieve desired results in reducing musculoskeletal disorders in small scale a...
China holds large-scale lead–zinc mineral resources; however, mining activities often cause severe contamination by heavy metals. This study systemically assessed eight metals (Cu, Zn, Cd, Pb, Cr, Hg, Ni, and As) in mine tailings, soil, groundwater from 27 contaminated sites across China. Regarding 1% of the tailing samples were hazardous waste 20% class II non-hazardous waste. Zn Pb showed hig...
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