نتایج جستجو برای: mine area

تعداد نتایج: 605416  

Journal: :desert 0
h. ahmadi professor, science and research branch, islamic azad university,tehran, iran h. azarnivand professor, faculty of natural resources, university of tehran, karaj, iran m.r. ekhtesasei associate prof., faculty of natural resources, yazd university, yazd, iran m. tazeh assist. prof., faculty of natural resources, ardakan university, ardakan, iran

there have been different indices identified for desertification. among these is technogenic desertification index which seems much more efficient. in this study, some of technogenic desertification indices were studied and evaluated. first land use maps of the region were taken from irs-pan satellite image and aerial photos analysis. after evaluating the area of different uses, lands that had ...

Journal: :The Science of the total environment 2004
R Pereira R Ribeiro F Gonçalves

Hair samples from the scalp were used in a preliminary assessment of heavy metals exposure (As, Cd, Cr, Cu, Mn and Zn) of the human population living near an abandoned cupric pyrite mine (Mina de S. Domingos, Southeast Alentejo, Portugal). In parallel with the collection of hair samples, individuals from two different communities at the South and North of the mine area answered a questionnaire ...

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...

Journal: :Journal of hazardous materials 2009
William M Mayes Hugh A B Potter Adam P Jarvis

Data are presented which evaluate the performance of a pilot-scale treatment system using pelletised hydrous ferric oxide (HFO; a waste stream from coal mine water treatment) as a high surface area sorbent for removing zinc (Zn) from a metal mine water discharge in the North Pennines Orefield, UK. Over a 10-month period the system removed Zn at mean area- and volume-adjusted removal rates of 3....

1998
Polly K. Pook Jack Arlen Frazier

The use of multiple low cost robotic mine hunters to provide rapid and complete area coverage is a promising new approach to the counter mine problem. Fetch 2 , in development, is a system of four robotic mine hunters that will be capable of cooperatively clearing a field under the supervision of a single operator. The robots feature advanced computational and mechanical components, yet are des...

Journal: :Journal of engineered fibers and fabrics 2014
F Selcen Kilinc William D Monaghan Jeffrey B Powell

The mining industry is among the top ten industries nationwide with high occupational injury and fatality rates, and mine rescue response may be considered one of the most hazardous activities in mining operations. In the aftermath of an underground mine fire, explosion or water inundation, specially equipped and trained teams have been sent underground to fight fires, rescue entrapped miners, ...

Slope stability is one of the most important issues in open pit mining design. The main purpose of any open pit mine design is to propose an optimal excavation configuration, considering safety, ore recovery and financial return. An accurate pit slope design which accounts for the mine geology, structural geology, rock mass properties, and hydrogeology models of the mine area, drastically enhan...

In the present study, an investigation was carried out on Parvadeh coal mine in Tabas, Iran, to survey the effect of fractures on unusual methane gas emission in coal mines. This coal mine was chosen for investigating because of its high methane gas content in the coal body and available data from sensors in desired locations. Gas concentration monitoring programs were carried out at the mine s...

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