The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform
Antonio Albuquerque - One of the best experts on this subject based on the ideXlab platform.
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potential for reuse of tungsten Mining waste rock in technical artistic value added products
Journal of Cleaner Production, 2012Co-Authors: Joao Castrogomes, Rafael Peralbo Cano, Duran J Suarez, Antonio Albuquerque, Abilio P SilvaAbstract:Mining and Quarrying activities in Europe generate approximately 55% of total industrial wastes, according to a recent Eurostat report. Most of these wastes are directly dumped on land or deposited in landfill sites. The first solution may lead to negative environmental impacts on land (removal of vegetation, deforestation, land slope changes and increased risk of erosion), water (pollutant transport through surface runoff, soil infiltration and contamination of water resources), may lead to the contamination of agricultural goods and may impose risks on human health. In Portugal, about 20% of industrial waste produced originates from mines and quarries, particularly from Panasqueira Mining, one of the largest tungsten mines in the world. Currently, Panasqueira Mining generates almost 100 tonnes of waste-rock, per day. Such waste-rock have accumulated over a number of years into very large heaps and it is desirable to seek new economic solutions that can contribute towards their reuse. In this context, this work discusses the potential for reuse of waste-rock piles of Panasqueira tungsten mine, which may be a case statement to be followed. The proposed solution described in this paper consists in developing innovative polymer-based composite materials, obtained from non-contaminated waste-rock tailings. Such materials must have suitable properties for technical-artistic value added applications, such as conservation, restoration and/or rehabilitation of historic monuments, sculptures, decorative and architectural intervention, or simply as materials for building revetments.
Mikko Hirvone - One of the best experts on this subject based on the ideXlab platform.
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634 reducing slipping and falling accidents in Mining and Quarrying industry in the arctic area by selction of suitable safety footwear
Injury Prevention, 2016Co-Authors: Mikko HirvoneAbstract:Background Accidents related to slips, trips and falls represent roughly one fourth of the total accidents in the Mining and Quarrying industry in Finland. According to a recent estimate, in Finland, an accident involving a fall costs about 6000 € on average. Working in the northern open pit mines exposes the workers in harsh weather conditions where pedestrian walkways are often very slippery because they are covered by ice and snow. Therefore it is essential that the footwear used by the workers has good grip in those conditions. Description of the problem Footwear selected to be used in the mine work is normally based on the risk assessment because some workers do occasionally work that includes welding the footwear are selected on those based on those criteria’s. Most commonly the footwear soles are selected so that they are resistant to hot contact (HRO) according the PPE-footwear standard. This leads to the selection of footwear which sole are made from dense materials like nitrile rubber. Using of those dense polymers like can be problematic in the arctic area because the slip resistance of the footwear soles made from dense materials is found to be poorer than footwear made from softer soling materials. The cold climate can increase the hardness of the soling material which makes footwear even more slippery. Slip resistance, i.e. dynamic coefficient of friction (DCOF) of the footwear was measured in laboratory by using FIOH’s own laboratory device slip simulator. Measurements were carried out according the parameters defined in the standard EN ISO 13287: 2012 Personal protective equipment-Footwear-Test method for slip resistance. The standard method was modified only by using smooth ice surface as a test surface. Ten consecutive measurements were done by each footwear model. The mean value and standard deviation was calculated. In addition the footwear was pre-conditioned in the climatic chamber at the temperature of – 20 C° for four hours in order to see how the hardening of the sole materials affects to the slip resistance. Hardness of the sole was measured by using hardness tester with Shore (A) hardness scale. Four different footwear were selected and collected form the mines participating in the project. Three of those footwear were safety footwear according EN ISO 20345: 2011 they were half-knee height leather footwear designed for winter conditions. One sample was rubber boot from Russia and it was not classified as safety footwear according to EN or ISO standards. Additionally six different safety footwear for winter conditions were selected in order to compare level of performance the slip resistance of footwear used in mines to the winter footwear available in the market. Results Samples collected from the four mines got almost equal DCOF levels than the winter safety footwear selection from market when they were measured without pre-conditioning, but the DCOF values were 39% lower compared to winter safety footwear selection when the samples were pre continued in climatic chamber. Hardness of the footwear sole increased 26% in average because of the pre-conditioning in cold. Conclusions Footwear currently used in the four mines have reasonable good slip resistance compared to footwear’s available in the market, but their fiction level is strongly dependent of the temperature. For safety reasons, it would be advisable to use footwear sole materials which are not so much affected by the temperature changes especially in the artic area mines.
Aleksandra Hoffma - One of the best experts on this subject based on the ideXlab platform.
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zarządzanie ryzykiem w tworzeniu wartości na przykladzie przedsiebiorstwa z branzy pozostale gornictwo i wydobywanie risk management in creating value for companies in the example for other Mining and Quarrying
2013Co-Authors: Aleksandra HoffmaAbstract:Ponizszy raport prezentuje jaki wplyw na wartośc przedsiebiorstwa moze miec zarządzanie ryzykiem. Przedstawia on strategie zarządzania ryzkiem w tworzeniu wartości na podstawie branzy pozostale gornictwo i wydobywanie .W ponizszym raporcie wykorzystalam analize scenariuszy, ktora ukazuje wplyw roznych przyszlych scenariuszy rozwoju sytuacji na wielkośc wartości zaktualizowanej netto.This report presents the impact on the value of the company may be risk management. It represents the Risk Management strategies in creating value from the industry for other Mining and Quarrying. In the following report, I used scenario analysis, which shows the effects of different scenarios of future developments on the size of the net present value.
Joao Castrogomes - One of the best experts on this subject based on the ideXlab platform.
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potential for reuse of tungsten Mining waste rock in technical artistic value added products
Journal of Cleaner Production, 2012Co-Authors: Joao Castrogomes, Rafael Peralbo Cano, Duran J Suarez, Antonio Albuquerque, Abilio P SilvaAbstract:Mining and Quarrying activities in Europe generate approximately 55% of total industrial wastes, according to a recent Eurostat report. Most of these wastes are directly dumped on land or deposited in landfill sites. The first solution may lead to negative environmental impacts on land (removal of vegetation, deforestation, land slope changes and increased risk of erosion), water (pollutant transport through surface runoff, soil infiltration and contamination of water resources), may lead to the contamination of agricultural goods and may impose risks on human health. In Portugal, about 20% of industrial waste produced originates from mines and quarries, particularly from Panasqueira Mining, one of the largest tungsten mines in the world. Currently, Panasqueira Mining generates almost 100 tonnes of waste-rock, per day. Such waste-rock have accumulated over a number of years into very large heaps and it is desirable to seek new economic solutions that can contribute towards their reuse. In this context, this work discusses the potential for reuse of waste-rock piles of Panasqueira tungsten mine, which may be a case statement to be followed. The proposed solution described in this paper consists in developing innovative polymer-based composite materials, obtained from non-contaminated waste-rock tailings. Such materials must have suitable properties for technical-artistic value added applications, such as conservation, restoration and/or rehabilitation of historic monuments, sculptures, decorative and architectural intervention, or simply as materials for building revetments.
Adam Smolinski - One of the best experts on this subject based on the ideXlab platform.
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environmental impact and damage categories caused by air pollution emissions from Mining and Quarrying sectors of european countries
Journal of Cleaner Production, 2017Co-Authors: Agata Fugiel, Dorota Burchartkorol, Krystyna Czaplickakolarz, Adam SmolinskiAbstract:Abstract The aim of this article is to perform an environmental impact assessment of the air pollution emissions from the Mining and Quarrying sectors of European countries by applying the life cycle assessment technique. The Mining and Quarrying sectors of 12 European countries were assessed. The sectors include hard coal and lignite Mining, crude petroleum and natural gas extraction, Mining of metal ores, and other service activities in the Mining sector. Environmental analyses consider particulate and gas emissions, including emissions of CO2, CO, NOx, SOx, PM2.5, PM10, CH4, NMVOCs and NH3. Based on two life cycle impact assessment methods, ReCiPe and IPCC, the Mining and Quarrying sectors were assessed in the following impact and damage categories: greenhouse gases emission, terrestrial acidification, photochemical smog and particulate matter formation, damage to human health and ecosystem quality. The analyses were made with data for 2012. They showed that the highest particulate and gas emission occurs in Great Britain's Mining and Quarrying sector, and the lowest occurs in Bulgaria's. The environmental indices in all of the impact and damage categories in the Mining and Quarrying sectors were the highest in Great Britain, Poland, Norway and Germany. It was found that greenhouse gas emissions are quite different in this sector in each country for the time horizons of 20, 100 and 500 years, which is justified by the GWP factor for methane emission.