Dust Generation within the Vicinity of Malmberget Mine, Sweden

2011 ◽  
Vol 90-93 ◽  
pp. 752-759 ◽  
Author(s):  
Jia Qi ◽  
Al Ansari Nadhir ◽  
Sven Knutsson
Keyword(s):  
Dust Control ◽  
Open Pit ◽  
Mining Activities ◽  
Fugitive Dust ◽  
Mining Site ◽  
Dust Generation ◽  
Long Time ◽  
Center Area ◽  
Industrial Center ◽  
Peak Value

Mining activities are usually associated with environmental impacts, particularly that of air pollution by fugitive dust. Malmberget mine is one of the most important iron mines in Sweden and the dust problem has been noticed by the inhabitants for a long time. Dust collectors had been installed to measure the dust fallout around the mining site. In this research the dust fallout recorded during the period August 2006 till July 2010 were analyzed. Generally speaking the amount of dust fallout was decreasing year by year due to some implemented dust control methods. Mining activities produced more dust during summer than winter. The peak value was 265g/100m2/30d appeared in May 2007, and the lowest dust fallout was 25g/100m2/30d happened in August 2009. Dust was determined to be originated from the open pit area and the industrial center area. Truck transportation on the haul roads, wind erosion of stockpiles and exposed areas were the main activities that caused dust generation.

Activities of Musan Mine observed by Sentinel-1 Coherence Imagery

2020 ◽  
Author(s):  
Jihyun Moon ◽  
Heejeong Seo ◽  
Hoonyol Lee
Keyword(s):  
Time Series ◽  
Satellite Images ◽  
European Space Agency ◽  
Open Pit Mine ◽  
Mining Activity ◽  
Open Pit ◽  
Open Pit Mining ◽  
Series Data ◽  
Mining Activities ◽  
Mining Site

<p>Musan mine in North Korea is the largest open-pit iron mine in Asia with the proved reserves of about 2.06 billion tons and more than 9 square kilometers. Open-pit mining is one of the surface mining technique extracting minerals from the surface. Vegetation is rarely distributed at the mining site because the topsoil is removed and the ore is mined directly from the surface. Therefore, it is effective to observe surface displacement at the mining site using Interferometric Synthetic Aperture Radar (InSAR) technology. InSAR coherence detects random surface change that measures the activity or stability of the interferometric phase of InSAR data. High coherence will be maintained on the surface where there is no movement and only surface scattering. On the other hand, the surface where there is a lot of movement and volumetric scattering has low coherence value. Therefore, using 12-days InSAR coherence images from Sentinel-1 satellites, for example, it is possible to analyze how active the open-pit mine is during the 12 days. Sentinel-1A satellite images were acquired from June 11, 2015 to May 24, 2016, followed by Sentine-1B satellite images from September 27, 2016 to April 21, 2019. A total of 102 SAR images were downloaded from European Space Agency (ESA) portal. There is a gap between May 24 and September 27, 2016 due to the transition of the data acquisition plan. Over 100 12-days coherence data were obtained by applying InSAR. Stable spots and target spots were selected through average and standard deviation of the entire coherence time series data. Coherence values include not only the mining activity but also the effects of perpendicular baseline, temporal baseline, and weather. Therefore, NDAI (Normalized Difference Activity Index) was newly defined to remove the noise and only the coherence value due to the influence of the mining activity was extracted. The degree of activities can be observed by the time series coherence and NDAI images. This study needs other references related to mining activities in order to analyze the mining activities in more detail. This method can be applied to other open-pit mine.</p>

scholarly journals Development of Emission Factor Equations for Surface Mining Activities: The Case of the Stacker

2021 ◽  
Vol 5 (1) ◽  
pp. 15
Author(s):  
Athanasios Triantafyllou ◽  
Ioannis Kapageridis ◽  
Stylianos Gkaras ◽  
Francis Pavloudakis
Keyword(s):  
Emission Factor ◽  
Surface Mining ◽  
Mining Activities ◽  
Fugitive Dust ◽  
Mining Operations ◽  
Basic Step ◽  
Surface Mines ◽  
Dust Generation ◽  
Moving Vehicles ◽  
Individual Source

In surface mines, various activities (e.g., excavations, loading and unloading of material, moving vehicles on unpaved haul roads, etc.) represent significant sources of fugitive dust. The estimation of dust generation from each individual source is a basic step in planning and implementation decision-making systems regarding the air quality of the surrounding area. Typically, this can be obtained by using emission factor or prediction-type equations. A detailed study was carried out at four surface lignite mines to determine PM emission factors and to develop the prediction-type equations of various surface mining activities. In this work, the data, method and results referring to the stacker, one of and the significant fugitive dust emissions source in mining operations are presented and analyzed.

DUST GENERATION AND ITS SEPARATION METHOD

2015 ◽  
Vol 3 (1) ◽  
pp. 228-230
Author(s):  
Karan Bhatia
Keyword(s):  
Air Flow ◽  
Dust Control ◽  
Separation Method ◽  
Open Pit ◽  
Dust Collector ◽  
Open Pit Mines ◽  
Profound Impact ◽  
Dust Generation ◽  
Intense Research ◽  
Breathing Problem

Dust control in underground as well as open pit mines has been an area of intense research and study. Dust controlling by dust capturing or dust consolidation and using appropriate method for different causes of dust generation has been the concern of this paper. Dust is generated mainly in every activity of mine from drilling to transportation to using any modern mechanization for ore extraction. Dust generation can cause less visibility more accidents, breathing problem, affects agriculture and vegetation. Various methods deployed for its control and separation does not impact its originator rather reduces its percentage in mine air. Wet drilling, water spraying, ventilation, dust collector and air flow to control the generation of dust have proven profound impact to control dust. This paper embeds the detailed causes of dust, how dust can be reduced in mine air and what can be done to prevent it, if possible.

Life Cycle Sustainability Assessment of Fugitive Dust Control Methods

2021 ◽  
Vol 147 (3) ◽  
pp. 04020181
Author(s):  
Alena J. Raymond ◽  
Alissa Kendall ◽  
Jason T. DeJong ◽  
Edward Kavazanjian ◽  
Miriam A. Woolley ◽  
...  
Keyword(s):  
Life Cycle ◽  
Sustainability Assessment ◽  
Dust Control ◽  
Life Cycle Sustainability Assessment ◽  
Control Methods ◽  
Fugitive Dust

scholarly journals Interruptions: Affective futures and uncanny presences at Giemaš, Finnmark

Polar Record ◽  
2021 ◽  
Vol 57 ◽  
Author(s):  
Marianne Elisabeth Lien
Keyword(s):  
Open Pit ◽  
Open Pit Mining ◽  
Mining Company ◽  
Mining Site ◽  
Wide Range ◽  
Migratory Movement ◽  
A Site ◽  
Affective Relations ◽  
North Norway

Abstract This paper concerns affective relations and unexpected interruptions as the planned expansion of an extractive open-pit mining site gathers momentum. The site is a mountain in Varanger, North Norway, criss-crossed by a sand-coloured meshwork of roads that are part of the current infrastructure of a quartzite quarry. Recently purchased by Chinese investors, the mining company Elkem plans a massive expansion of the operations, which will interrupt a wide range of practices and projects, including the migratory movement of reindeer, as well as their grazing patterns. Known as Giemaš amongst Sámi speakers, the mountain is also alluded to as a site of other powers, manifesting as unexpected accidents. In this article, I explore how the planned expansion evokes this contested site as more than a singular mountain, and how divergent epistemic formations interrupt the making of extractive resources in multiple ways.

scholarly journals “It Often Feels Like You Are Talking to a Wall”: Police and Private Security Responses to the Campaign to Protect Pont Valley Against Opencast Coal Extraction

2021 ◽  
Author(s):  
Nathan Stephens-Griffin ◽  
Jack Lampkin ◽  
Tanya Wyatt ◽  
Carol Stephenson
Keyword(s):  
Qualitative Interviews ◽  
Private Security ◽  
Coal Extraction ◽  
Open Pit ◽  
Wildlife Crime ◽  
Mining Company ◽  
Mining Site ◽  
Abusive Behavior ◽  
Private Interests ◽  
The Uk

AbstractConflict between police, private security and political protesters is a topic that has been researched widely in criminology and other disciplines (e.g., Choudry 2019; Gilmore et al. 2019; Goyes and South 2017; Jackson et al. 2018; Rigakos 2002; South 1988; Weiss 1978). Adopting a green criminological lens, this article seeks to contribute to this rich body of research by examining police and private security responses to campaigning against opencast (open-pit) coal mining in Pont Valley, County Durham, United Kingdom (UK). Based on qualitative interviews, the article examines activists’ perceptions of responses to their campaign. Our findings reveal that rather than acting as neutral arbiters, police colluded with private interests, overlooking the abusive behavior of private security and bailiffs, particularly during the eviction of a protest camp at the proposed mining site. Activists believed that their right to protest was not respected, that their safety was jeopardized, and that police had willfully ignored a wildlife crime perpetrated by the mining company in order to enable mining to go ahead. Our article argues that the Pont Valley case fits into a wider pattern of repression of environmentalism in the UK, supporting Gilmore and colleagues’ (2019) argument that a progressive transformation in policing has been overstated.

Experimental Investigation of Dust Amount from Free Falling Particle Stream Effected by Deflector Curvature of Dust Suppression

2013 ◽  
Vol 864-867 ◽  
pp. 1789-1792 ◽  
Author(s):  
Ze Qin Liu ◽  
Zhen Jing Wu ◽  
Ze Peng Feng
Keyword(s):  
Experimental Investigation ◽  
Dust Control ◽  
Emissions Reduction ◽  
Fugitive Dust ◽  
Bulk Materials ◽  
Dust Suppression ◽  
Suppression Effect ◽  
Particle Stream ◽  
Free Falling ◽  
The Relationship

This paper focuses on the study of the curvatures of deflector installed on the below receiving device to effect the dust amount from the free falling particle stream. The deflector curvature was artificially controlled to limit the fugitive dust direction which was generated by the collision between the free falling bulk materials and the receiving device. This method was used to improve efficiency of the dust control system to exhaust fugitive dust, and to achieve the targets of energy conservation and emissions reduction. The experimental method was adopted to explore the relationship between the deflector curvature and the producing dust quantity. The experimental results indicated that, the dust suppression effect containing deflector contained a certain radian was more remarkable, when the height of the free falling of bulk materials was constant. The producing dust quantity decreased slightly with the deflector curvature increasing, and then increased rapidly. When the deflector curvature was 0.045 cm-1 or 0.060cm-1, the minimum of producing dust quantity could be obtained, and the dust removal effect might be significant.

scholarly journals Fugitive dust control experiments using directed airflow in dumping operations

1992 ◽  
Author(s):  
M.R. Winberg ◽  
D.E. Menkhaus ◽  
D.N. Thompson ◽  
V.E. Wixom
Keyword(s):  
Dust Control ◽  
Fugitive Dust

scholarly journals Changes to the structure of the hydrographic network within the Silesia-Cracow area of zinc and lead exploitation

2017 ◽  
Vol 5 (2) ◽  
pp. 37-48
Author(s):  
Alicja Pradela ◽  
Andrzej Zygmuniak
Keyword(s):  
Aquatic Environment ◽  
Drainage Density ◽  
Open Pit ◽  
Hard Coal ◽  
Mining Activities ◽  
Iron Ores ◽  
Open Pit Mines ◽  
Hard Coal Mining ◽  
Quantitative Changes ◽  
Hydrographic Network

Abstract The traditions related to mining activities in the Silesia-Cracow area go back to the 11th century when lead, silver, and iron ores were exploited from open pit mines. For centuries, the growth in ore exploitation was an incentive for the development of other industries (hard coal mining, steelmaking). This, in consequence, resulted in progressive urbanization. The areas analyzed are of highly transformed character, mainly because of mining activities. These changes are especially seen in relation to the aquatic environment since this component is exposed to heavy modifications due to the mining processes. Hence the study was carried out in order to determine the quantitative changes in the surface hydrographic network. It was found, that of the 62 main watercourses (existing during the whole analyzed period) 25 changed only slightly in terms of their length, 20 shortened by a few hundred meters and 17 lengthened. In the case of the aggregated length of the tributaries, the value increased for the 41 main watercourses, for 10 of them it was constant and was reduced slightly for a further 11. The areas where the length of the watercourses increased and the drainage density grew were found to be as well those where the total area of wetlands decreased. The element of the hydrographic network which was affected by the most changes was the water bodies. During the analyzed period of over 200 years, their number increased from 154 to 1413.

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