Ukraine has substantial reserves of methane resident in underground coal seams and surrounding rock strata that, if captured, would constitute a valuable energy resource. During 2002, Ukraine consumed 78 billion cubic meters (bcm) of natural gas and produced domestically only 18 bcm. Ukraine receives approximately 30 bcm per year as a transit fee for the use of their pipeline system to transpor...

The contents of arsenic and selenium in 33 coals collected from the main coal mines in northeastern, northern and eastern China were determined by flow injection-hydride generation and non-dispersion atomic fluorescence spectrometry (HGAFS). The concentrations of As in the northeast region are relatively higher with the values > 100 microg g(-1); in the east they are lower with values < 100 mic...

INTRODUCTION The restricted workspace present in low-seam coal mines forces workers to adopt awkward working postures (kneeling and stooping), which place high physical demands on the knee and lower back. METHOD This article provides an analysis of injury claims for eight mining companies operating low-seam coal mines during calendar years 1996-2008. All cost data were normalized using data o...

Assessment of respirable dust, personal exposures of miners and free silica contents in dust were undertaken to find out the associated risk of coal workers' pneumoconiosis in 9 coal mines of Eastern India during 1988-91. Mine Research Establishment (MRE), 113A Gravimetric Dust Sampler (GDS) and personal samplers (AFC 123), Cassella, London, approved by Director General of Mines Safety (DGMS) w...

Communications in coal mines are poor by general industry standards, and generate significant risks in the lack of information available from underground areas. Mines often employ multiple incompatible systems for communication. This report concludes that there is no technical barrier to the upgrading of coal mine communications to equivalent standards of those used by general commercial and in...

The paper presents results of application of a machine learning method, namely the induction of classification and regression rules, for seismic hazard prediction in coal mines. The main aim of this research was to verify if machine learning methods would be able to predict seismic hazard more accurately than methods routinely used in Polish coal mines on the basis of data gathered by monitorin...

environmental impact assessment (eia) has led to the dominance of planners on the natural environment of the regions, providing the possibility of continuously monitoring and controlling the status quo by management staff. in this regard, a new semi-quantitative model is presented for the eia of the eastern alborz coal mining complex using the matrix method, and determining the corresponding im...

The underground workers in the Dutch coal-mines have been radiographed (70 mm.) seven times since 1949. The prevalence of coal-miners' pneumoconiosis shows a continuous decrease in all age groups. To evaluate the effect of the intensive system of dust suppression over this period a cohort analysis was made of the proportion ofmen with pneumoconiosis with the same number of years of exposure und...