Due to the high attenuation of radio frequency (RF) signals in underground mines and the statutory power restriction of communication gadgets especially for coal mines, the wireless communication systems have restricted applications in the underground mines. The paper discusses different radio frequency communication techniques being employed for Indian underground mines. Experiments were condu...

Past efforts to estimate methane emissions from underground mines, surface mines, and other coal mine operations have been hampered, to different degrees, by a lack of direct emissions data. Direct measurements have been completely unavailable for several important coal mining operations. A primary goal of this study was to collect new methane emissions measurements and other data for the most ...

This paper reported the pollutant removal performances of a hybrid wetland system for the treatment of aquaculture wastewater. The system consisted of two treatment stages: a subsurface vertical flow (VF) wetland, followed by a horizontal flow (HF). The aquaculture wastewater with the different concentrations such as eutrophy and mesotrophy was treated using hybrid constructed wetland. The expe...

In many regions of the world, urban water systems will need to transition into fundamentally different forms to address current stressors and meet impending challenges-faster innovation will need to be part of these transitions. To assess the innovation deficit in urban water organizations and to identify means for supporting innovation, we surveyed wastewater utility managers in California. Ou...

A typical negative impact on water resources for mining companies engaged in blasting operations is the discharge of quarry and mine contaminated with nitrogen compounds. The solution problem under consideration assumed an integrated approach based use partially flooded abandoned workings already available at enterprise as bioengineered structures. article substantiates confirms possibility usi...

In western United States, both mine reclamations and renewed mining at previously abandoned mines have increased substantially in the last decade. This increased activity may adversely impact bats that use these mines for roosting. Townsend’s big-eared bat (Corynorhinus townsendii) is a species of conservation concern that may be impacted by ongoing mine reclamation and renewedmineral extractio...

∗MINES ParisTech, Centre Automatique et Systèmes, Unité Mathématiques et Systèmes, 60 Bd St-Michel, 75272 Paris, Cedex 06, France (e-mail : [email protected]) ∗∗ IFP Energies Nouvelles, Département Contrôle, Signal et Système, 1 et 4 avenue du Bois-Préau, 92852 Rueil-Malmaison, France ∗∗∗MINES ParisTech, Centre Automatique et Systèmes, Unité Mathématiques et Systèmes, 60...

Near Field Atmospheric Dispersion Modeling on an Industrial Site Using Neural Networks Pierre Lauret, Frédéric Heymes, Laurent Aprin, Anne Johannet, Gilles Dusserre, Laurent Munier, Emmanuel Lapébie Institute of Risk Science (ISR), Ecole des Mines d’Alès, Alès, France Centre des Matériaux de Grande Diffusion (CMGD), Ecole des Mines d’Alès, Alès, France CEA, DAM, GRAMAT, F-46500 Gramat, France *...

1 Department of Construction and Manufacture Engineering, Polytechnic School of Mieres, University of Oviedo, Mieres, 33600 Asturias, Spain 2Department of Exploitation and Prospecting Mines, Mining Engineering School, University of Oviedo, Oviedo, 33004 Asturias, Spain 3 Department of Exploitation Mines, Polytechnic University of Madrid, 28040 Madrid, Spain 4Department of Exploitation and Prosp...

abandoned surface mine excavations can be a major environmental, social and/or human healthproblem for the mining industry as well as for the community living nearby. this problem is exacerbated by therapidly growing population encroaching on areas of historic mined lands. the aim of this studywas to assess thesafety status of the historic nyala mine excavation with the purpose of coming up wit...