Results 21 to 30 of about 1,213,077 (307)
Meitan xuebaoIn view of the problems of strong mine pressure such as rapid shrinkage of hydraulic support column and easy support crushing in working face under the fully mechanized caving face with large mining height in multi-layer thick and hard roof of extra ...
Zhen ZHANG +6 more
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Ecological aspects of managing the stressed- deformed state of the mountain massif during the development of multiple coal layers [PDF]
, 2018 The ecological consequences of long-term development of coal deposits for the components of the environment, buildings, communications and infrastructure facilities have been analysed.
Borysovska, Olena +11 more
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Journal of the Royal Society of Medicine, 2004 The Government is currently urging coal miners or their relatives to claim compensation if the miner ever had coughing, clearing their chest or throats, breathing problems or any chest problems whatsoever. This applies whether the miner is alive or had such difficulties and is now dead.
openaire +3 more sources
Advanced Engineering Materials, EarlyView.Collagen hydrolysate is evaluated as a sustainable binder for MgO‐C refractories. Its thermally induced cross‐linking and gas release lead to expansion and cracking in large bricks, but tailored batches with lignin, recyclates, or fine graphite improve the gas release while thermal treatment and stability.
Till M. J. Stadtmüller +8 more
wiley +1 more source
MANAGEMENT OF SUSTEINABLE DEVELOPMENT AND ECONOMIC REVIVAL OF MINING AREAS AFFECTED BY RESTRUCTURING [PDF]
Analele Universităţii Constantin Brâncuşi din Târgu Jiu : Seria Economie, 2013 Sustainable development of an area or region, as a process of change, of economic and jobs development, entails, in the context of what it summarizes through the dualism: ecosystem-ecoeficiency, community concern over the current and future situation of ...
Valeriu Pleşea +2 more
doaj
Identifying contaminants of coal-derived inertinite in charcoal briquettes: Preliminary findings of microscopic analysis [PDF]
Journal of Water and Land DevelopmentDespite the widespread popularity of charcoal-based grilling fuels, extensive studies have highlighted various pollutants linked to their production and combustion, posing potential risks to human health and the environment.
Zbigniew Jelonek, Iwona Jelonek
doaj +1 more source
Development of coal-feeding systems at the Morgantown Energy Research Center [PDF]
, 1977 Systems for feeding crushed and pulverized coal into coal conversion reactor vessels are described. Pneumatic methods for feeding pulverized coal, slurry feeders, and coal pumps, methods for steam pickup, and a method for drying a water-coal slurry in a ...
Hobday, J. M.
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Advanced Engineering Materials, EarlyView.This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar +7 more
wiley +1 more source
Research into the process of preparation of Ukrainian coal by the oil aggregation method [PDF]
, 2009 We conducted a study into concentration of Donetsk coal with varying degrees of coalification – anthracite and grade G – by the method of oil aggregation. We determined the character of impact of the following factors on the results of oil aggregation of
Biletskyi, V. S. +8 more
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Scientific ReportsFrequent failures of roadway anchor bolts in the roof-dripping zones of the Tashan coal mine endanger roadway stability and safety. To clarify the stress-corrosion cracking (SCC) mechanism and identify mitigation strategies, we combined water-chemistry ...
Lei Wang +4 more
doaj +1 more source