نتایج جستجو برای: underground mining
تعداد نتایج: 99723 فیلتر نتایج به سال:
water has an important role in creating pollution problems in the mining regimes influencing the surrounding surface environment. the purpose of this study is to make an assessment of groundwater quality in an underground mine site in portugal with a view of determining the pollution potential of groundwater. in the corresponding surface area of this underground mine, intersections of fou...
Abstract Rock bolts have been used in the mining industry for a long time. They are as reinforcement tendons to keep stability of openings underground and slope open-pit mining.
Air monitoring surveys were conducted between 1998 and 2001 at seven non-metal mining facilities to assess exposure to respirable elemental carbon (REC), a component of diesel exhaust (DE), for an epidemiologic study of miners exposed to DE. Personal exposure measurements were taken on workers in a cross-section of jobs located underground and on the surface. Air samples taken to measure REC we...
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