نتایج جستجو برای: mineral resource
تعداد نتایج: 277330 فیلتر نتایج به سال:
The search for hidden minerals with a large, buried depth depends on the guidance of geological and metallogenic theory, but it is difficult to master characteristics deep deposits. In this paper, taking survey area as an example, stimulated polarization geophysical method used obtain information indirectly. Through analysis study IP (induced polarization) anomaly its in tin polymetallic mining...
The economic assessment of mining projects includes many factors and resource classification is critical at any stage of mining. The quality of resource classification is a key requirement for accurate economic and environmental risk evaluation. The results of economic assessment are usually reported by companies in order to attract investors. Mineral resource classification standards were crea...
BACKGROUND Bone status in HIV-infected patients on antiretroviral treatment (ART) is poorly documented in resource-limited settings. We compared bone mineral density between HIV-infected patients and control subjects from Dakar, Senegal. METHODS A total of 207 (134 women and 73 men) HIV-infected patients from an observational cohort in Dakar (ANRS 1215) and 207 age- and sex-matched controls f...
The B.c. Mineral Potential Project - New Level 2 Mineral Resource Assessment Methodology and Results
In August 2002, the Geological Survey Branch (GSB) of the Ministry of Energy and Mines was asked by the Ministry of Sustainable Resource Management to undertake a Level 2 Mineral Resource Assessment (MRA) of the Coast Information Team’s (CIT) project area which encompasses approximately 11 million hectares. This was followed by a similar request in February 2003 to do the Lillooet Land Resource...
Nowadays, kriging has been accepted as the most common method of grade estimation in mineral resource evaluation stage. Access to the crisp assay data and a variogram model are the necessary means for the utilization of this method. Since fitting a crisp variogram model is generally difficult, if not impossible, the fitted theoretical model is usually tainted with uncertainty due to various rea...
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