Nitrogen oxides and carbon monoxide gases together with dust are known as the major pollutants arising during the blasting operations using the ammonium nitrate-fuel oil (ANFO) explosive at the Sungun surface mine, located in the northwest of Iran. The pollutants were monitored during some blasting operations at the mine. It was concluded that the gases and dust clouds initially went up to the ...

Abstract The paper presents the variability of hard coal output, methane content and emissions into workings atmosphere from two most methane-gassy mines in Poland. Budryk mine is one youngest Poland, but it as well. In 2016, total CH 4 exceed 140 million m 3 . This large increase to primarily related depth extraction (up 1290 m) and, consequently, rapid seams 10–12 /Mg daf ). On other hand, Pn...

Doing large-scale genomics experiments can be expensive, and so experimenters want to get the most information out of each experiment. To this end the Maximally Informative Next Experiment (MINE) criterion for experimental design was developed. Here we explore this idea in a simplified context, the linear model. Four variations of the MINE method for the linear model were created: MINE-like, MI...

Abstract The Yangjiacun coal mine, located in western China, exhibits distinctive characteristics, such as its shallow depth, thick bedrock, thin loose layer, and unique roof strata breaking movement. In this research, a comprehensive analysis of previous exploration data, subsequent mechanical testing, key stratum theory, natural equilibrium arch simulation tests numerical simulations has been...

Sponsored by Defense Threat Reduction Agency Contract DSWA01-98-C-0176 The Mine The cooperating mine was the Morenci Mine operated by Phelps-Dodge in SE Arizona. The scale of the operation is illustrated below. The mine produces over 25% of all US copper. Three to five blasts are detonated daily. During July and August, 31% of the events in the USGS Mine Event List were from this mine. Regional...

A large number of engineering problems involve several conflicting objectives, which today are often solved through expensive simulation calculations. Methods based on meta-models one the approaches to solving this group problems. In paper, multiobjective optimization in extraction system a copper open-pit mine complex is presented by modified-NBI method and regression meta-model. For purpose, ...

This paper explores mine waste that originates from resource extraction by specifically focusing on rock, tailings, dust and material culture the industry. By drawing examples fieldwork, archives, local media commentary limited interviews two iron-mining regions in Arctic Norway sub-Arctic Canada, this follows as it routinely transgresses attempts to be managed. Mine spills out of its prescribe...

Ukrainian electricity production sector is in a critical situation. It necessary to increase the coal ensure continuity of production. In this paper, an analysis mining western Donbas, Ukraine, was presented. The crucial thing region. new calculation schemes were proposed extraction Donbas mines. pillar parameters, which are for effective control rock pressure caused by stooping, substantiated....

Efficient gas extraction technology is an important topic for low permeability and high outburst coal seam. Based on the engineering background of Hudi Coal Mine with soft hard seams existing hydraulic enhancement technology, a new construction process to improve seam was proposed effectively reduce content risk outburst. In this measure, roadway in floor replaced directional main borehole, bra...

Mine closure includes the rehabilitation process, which is a continuous programme aimed at restoring physical, chemical, and biological quality that has been harmed by mining to level acceptable all individuals involved. BIT Mesra was assigned R&D project on development of dragline dump profile both on-going closed mines. As part study, stability highwall investigated for this mine. The final q...