iran has high potential and unique stone reserves in terms of variety of color, texture, quality, and economic value; nevertheless, in spite of growing mine production during the past decade, in many instances this potential has been overlooked. therefore it is necessary to investigate strategic factors of these mines. the purpose of this study is to evaluate and determine the best strategies f...

Recent changes in the fossil-fuel energy sector require coal mining industries to plan for future, including developing procedures decommissioning and closure associated with mines. In surface mining, geotechnical issues of include long-term stability pit slopes, particularly as is gradually filled water. This paper investigates such slope issues, emphasis on conditions prevailing Amyntaion lig...

Coal and lignite (brown coal) are geo-resources that govern energy production for decades. Geomechanical challenges, particularly slope stability, related to surface coal mines critical during operation determine the post-coal era. Several failure incidents have been reported in mining areas, typically associated with a sub-horizontal on weak—clay or marl—layer an interface of low strength. Thi...

Land use impacts are commonly quantified and compared using 2D maps, limiting the scale of their reported impacts to surface area estimates. Yet, nearly all land use involves disturbances below the land surface. Incorporating this third dimension into our estimates of land use impact is especially important when examining the impacts of mining. Mountaintop mining is the most common form of coal...

Four New World species of Phyllocnistis Zeller are described from serpentine mines in Persea (Family Lauraceae). Phyllocnistis hyperpersea,new species, mines the upper leaf surfaces of avocado, Persea americana Mill., and red bay, Persea borbonia (L.) Spreng. and ranges over much of the southeastern United States into Central America. Phyllocnistis subpersea,new species, mines the underside and...

The wide adoption of underground mining has contributed immensely to the rapid growth of the countries’ economy, job creation, gross domestic product, fixed capital formation, gross investment and merchandise exports on an enormous global scale. At the same time, the tedious and dangerous nature of underground mining makes it vulnerable to mine accidents and disasters, such as the fall of loose...

j u n e 2 0 1 3 , v o l . 7 1 , n o 5 © Van Zuiden Communications B.V. All rights reserved. To the Editor, Papendorp et al. described a patient with disseminated Strongyloides stercoralis hyperinfection after steroid use. The case underscores the necessity of a complete travel history before starting high-dose steroids. I would like to point out that Strongyloides has also been endemic in areas...