نتایج جستجو برای: lead mine

تعداد نتایج: 361945  

2000
JENNIFER M. HAZEN MARK W. WILLIAMS BRUCE STOVER MIKE WIREMAN

The legacy of mining continues to affect stream water quality throughout the western United States. Traditional remediation, involving treatment of acid mine drainage from portals, is not feasible for the thousands of abandoned mines in the West as it is difficult and expensive. Thus, the development of new methods to address acid mine drainage is critical. The purpose of this study was two fol...

Journal: :International journal of environmental health research 2013
Christos Nikolaidis Moysis Orfanidis Dimitri Hauri Stratos Mylonas Theodore Constantinidis

The 'Agios Philippos' lead-zinc mine in the Kirki region (NE Greece) is now closed, but its legacy of heavy metal contamination remains at the site. At present, management of the contaminated land is of major concern. The area is in a reclamation process and requires immediate remediation action, whereas human risks need to be carefully evaluated. In order to assess these risks, samples from ar...

2017
Rajchandar Padmanaban Avit K. Bhowmik Pedro Cabral

Mining for resources extraction may lead to several 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. Consequent...

2016
Michael Stovern Héctor Guzmán Kyle P. Rine Omar Felix Matthew King Wendell P. Ela Eric A. Betterton Avelino Eduardo Sáez

Wind erosion, transport and deposition of windblown dust from anthropogenic sources, such as mine tailings impoundments, can have significant effects on the surrounding environment. The lack of vegetation and the vertical protrusion of the mine tailings above the neighboring terrain make the tailings susceptible to wind erosion. Modeling the erosion, transport and deposition of particulate matt...

2016
Kunyang Zhao Nengxiong Xu Gang Mei Hong Tian

INTRODUCTION The use of Top Coal Caving for exploiting the thick coal seam with shallow buried depth most likely has a strong negative impact on the stability. CASE DESCRIPTION Anjialing No. 1 Underground Mine is located in Shuozhou City, Shanxi Province of China. The 4# Coal Seam of this coal mine is the thick coal seam with shallow buried depth, which has the thickness of 12 m and the depth...

Journal: :محیط شناسی 0
شهناز محمودی دانشگاه شهرکرد ،دانشجوی کارشناسی ارشد خاک شناسی مهدی نادری خوراسگانی دانشگاه شهرکرد ، استادیار گروه خاک شناسی جهانگرد محمدی دانشگاه شهرکرد،گروه خاک شناسی

areas surrounding mines are severely vulnerable to pollution due to mine explorations, excavations and transportations. nowadays spectrophotometers and spectral reflectance are applied for estimating the concentration of pollutants due to high costs of sampling and laboratory measurements. this research was carried out to determine spatial distribution of lead concentration in soil particle siz...

Journal: :ISPRS Int. J. Geo-Information 2017
Rajchandar Padmanaban Avit K. Bhowmik Pedro Cabral

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...

Journal: :Postgraduate medical journal 1977
A R Clark

Following delivery, blood was taken from 122 mothers and their infants' cords for estimation of lead, haemoglobin, packed cell volume and mean corpuscular haemoglobin concentration. All were resident in Kasanda, a township within a radius of 3000 metres of Brokin Hill Lead Mine and Smelter, Zambia, where the annual mean atmospheric lead concentration was 9.6 microgram/m3 and the soil lead conce...

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