scholarly journals Rock Fragmentation Evaluation towards Blast-To-Mill Concept of Blast Optimization in Hard Rock Mines

2021 ◽  
Vol 2 (2) ◽  
pp. 1-9
Author(s):  
Bright Oppong Afum
Keyword(s):  
Mining Industry ◽  
Mining Operation ◽  
Future Research ◽  
Mining Operations ◽  
Cost Performance ◽  
Rock Fragments ◽  
Related Cost ◽  
Potential Impact ◽  
Hard Rock Mines

Traditional blast optimisation studies ensure efficient mining operation but ignore potential impact of blasting on primary crushing. The performance of the primary crusher is key to the ore beneficiation process. Optimisation studies conducted through the mining operations to the comminution circuit is vital to the mine-to-mill concepts in the mining industry. In this approach, an innovative approach to the assessment of in-situ blasting is proposed and evaluated. This approach focuses on the acceptability of rock fragments on the Run-of-Mine (ROM) pad as opposed to the pits. Fragmentation analysis was conducted in the pit and on the ROM pad. A correlation efficiency of 0.92 was realized between the measured rock fragments in the pit and that on the ROM pad. About 10% of the rock fragments in the pit were classified as boulders while about 30% of the same rock fragments deposited on the ROM pad were classified as boulders. However, about 30% of the rockpile on the ROM pad was estimated to be lower than the Close Side Setting (CSS) of the primary crusher. It is recommended that future research evaluates the energy consumption and its related cost at the primary crusher in comparison to in-pit fragmentation and mucking cost performance.

Development and Progress of the Mining Association of Canada's Towards Sustainable Mining Program

2015 ◽  
pp. 267-290 ◽  
Author(s):  
Michelle Edith Jarvie-Eggart
Keyword(s):  
Crisis Management ◽  
Mining Industry ◽  
Mining Operation ◽  
Global Reporting Initiative ◽  
Operation Performance ◽  
Mining Operations ◽  
Aboriginal Community ◽  
Sustainable Mining ◽  
Safety And Health ◽  
Tailings Management

Early efforts to address sustainability within the mining industry (GMI and ICMM) did not create a common set of protocols by which individual operations could be clearly ranked on their performance. Although the Global Reporting Initiative (GRI) does provide protocols for the reporting of sustainability indicators for mining operations, GRI-based reports include a letter grade based on report completeness, not performance on the actual indicators. The Mining Association of Canada's Towards Sustainable Mining (TSM) program provides protocols to address biodiversity, tailings management, crisis management, safety and health, energy/GHGs, and Aboriginal/community engagement. The TSM-based reports grade mining operation performance at implementing programs and systems to address each of these topics. Progress along these indicators tells us how well the industry is doing at addressing sustainability along each concept, and where further progress is still needed.

scholarly journals Modelling of speleothems failure in the Hotton cave (Belgium). Is the failure earthquake induced?

2001 ◽  
Vol 80 (3-4) ◽  
pp. 315-321 ◽  
Author(s):  
J.F. Cadorin ◽  
D. Jongmans ◽  
A. Plumier ◽  
T. Camelbeeck ◽  
S. Delaby ◽  
...  
Keyword(s):  
Natural Frequencies ◽  
Quantitative Information ◽  
Rigid Bodies ◽  
Tensile Failure ◽  
Future Research ◽  
Geometrical Parameters ◽  
Laboratory Measurements ◽  
Ground Acceleration ◽  
Strong Ground

AbstractTo provide quantitative information on the ground acceleration necessary to break speleothems, laboratory measurements on samples of stalagmite have been performed to study their failure in bending. Due to their high natural frequencies, speleothems can be considered as rigid bodies to seismic strong ground motion. Using this simple hypothesis and the determined mechanical properties (a minimum value of 0.4 MPa for the tensile failure stress has been considered), modelling indicates that horizontal acceleration ranging from 0.3 m/s2 to 100 m/s2 (0.03 to 10g) are necessary to break 35 broken speleothems of the Hotton cave for which the geometrical parameters have been determined. Thus, at the present time, a strong discrepancy exists between the peak accelerations observed during earthquakes and most of the calculated values necessary to break speleothems. One of the future research efforts will be to understand the reasons of the defined behaviour. It appears fundamental to perform measurements on in situ speleothems.

scholarly journals A GIS Software Module for Environmental Impact Assessment of the Open Pit Mining Projects for Small Mining Operators in Kazakhstan

2021 ◽  
Vol 13 (12) ◽  
pp. 6971
Author(s):  
Mikhail Zarubin ◽  
Larissa Statsenko ◽  
Pavel Spiridonov ◽  
Venera Zarubina ◽  
Noune Melkoumian ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Impact Assessment ◽  
Environmental Impact Assessment ◽  
Mining Industry ◽  
Open Pit ◽  
Open Pit Mining ◽  
Software Module ◽  
Mining Operations ◽  
Open Pit Mines ◽  
Gis Software

This research article presents a software module for the environmental impact assessment (EIA) of open pit mines. The EIA software module has been developed based on the comprehensive examination of both country-specific (namely, Kazakhstan) and current international regulatory frameworks, legislation and EIA methodologies. EIA frameworks and methods have been critically evaluated, and mathematical models have been developed and implemented in the GIS software module ‘3D Quarry’. The proposed methodology and software module allows for optimised EIA calculations of open pit mines, aiming to minimise the negative impacts on the environment. The study presents an original methodology laid out as a basis for a software module for environmental impact assessment on atmosphere, water basins, soil and subsoil, tailored to the context of mining operations in Kazakhstan. The proposed software module offers an alternative to commercial off-the-shelf software packages currently used in the mining industry and is suitable for small mining operators in post-Soviet countries. It is anticipated that applications of the proposed software module will enable the transition to sustainable development in the Kazakh mining industry.

scholarly journals Mining Industry Impact on Environmental Sustainability, Economic Growth, Social Interaction, and Public Health: An Application of Semi-Quantitative Mathematical Approach

Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 972
Author(s):  
Muhammad Mohsin ◽  
Qiang Zhu ◽  
Sobia Naseem ◽  
Muddassar Sarfraz ◽  
Larisa Ivascu
Keyword(s):  
Economic Growth ◽  
Energy Source ◽  
Coal Mining ◽  
Environmental Sustainability ◽  
Mining Industry ◽  
Provincial Government ◽  
Mining Operations ◽  
Human Needs ◽  
The Government ◽  
Operational Activities

The mining industry plays a significant role in economic growth and development. Coal is a viable renewable energy source with 185.175 billion deposits in Thar, which has not been deeply explored. Although coal is an energy source and contributes to economic development, it puts pressure on environmental sustainability. The current study investigates Sindh Engro coal mining’s impact on environmental sustainability and human needs and interest. The Folchi and Phillips Environmental Sustainability Mathematics models are employed to measure environmental sustainability. The research findings demonstrated that Sindh Engro coal mining is potentially unsustainable for the environment. The toxic gases (methane, carbon dioxide, sulfur, etc.) are released during operational activities. The four significant environment spheres (atmosphere, hydrosphere, biosphere, and lithosphere) are negatively influenced by Thar coal mining. The second part of the analysis results shows that human needs and interests have a positive and significant relationship except for human health and safety with Sindh Engro coal mining. Environmental pollution can be controlled by utilizing environmentally friendly coal mining operations and technologies. Plantation and ecological normalization can protect the species, flora, and fauna of the Thar Desert. The government of Pakistan and the provincial government of Sind should strictly check the adaptation of environmental standards. Furthermore, the researchers should explore the environmental issues and solutions so that coal mining becomes a cost-efficient and environmental-friendly energy source in Pakistan.

Structure and Dynamics of Escalation from the Batterer's Perspective

2002 ◽  
Vol 83 (2) ◽  
pp. 129-141 ◽  
Author(s):  
Zeev Winstok ◽  
Zvi Eisikovits ◽  
Richard Gelles
Keyword(s):  
Qualitative Interviews ◽  
Cost Benefit ◽  
Future Research ◽  
Intimate Violence ◽  
Costs And Benefits ◽  
Structure And Dynamics ◽  
Related Cost ◽  
Cohabiting Couples ◽  
Societal Reaction ◽  
Practical Implications

Most theories dealing with the escalation of intimate violence have examined the components of escalation, rather than the dynamic processes involved. This paper develops a theoretical model addressing the structure and dynamics of escalation. To develop the model, we studied the transition between nonviolent and violent realities of cohabitant couples from the male partner's perspective. A sample of 25 interviews was selected from a database consisting of 120 in-depth qualitative interviews that were collected for a larger study dealing with the experience of violence among cohabiting couples that remained together in spite of the violence. Sampling, data collection, and data analysis followed the principles of grounded theory (Glaser & Strauss, 1967). Findings indicate that the men interviewed perceive themselves as entitled and obligated to defend their dyadic existential frameworks, while recognizing the costs and benefits involved in the use of violence to achieve this end. These men tend to create the rules, judge when the rules are being infringed upon, and take steps to enforce the rules. Their evaluation of the extent of their control over their own actions and the related cost–benefit considerations are highly influential in their attempts to reestablish the lost balance in their dyadic life. The process of constructing a reaction to their partner's behavior consists of two distinctive but interrelated phases: (a) identifying an action by the partner and constructing it into being worthy of reaction; (b) constructing an appropriate reaction. Men's construction of the escalation process is not random or situational, but rather constructed within a set of personal, interpersonal, and socially recognized scripts that delineate the boundaries of the entire process. Theoretical and practical implications for assessing the risk of violence and subsequent societal reaction are suggested, as well as directions for future research.

Screening and Isolation of Bacterial Strains with the Biotechnological Potential to Destruct Cyanide-Bearing Compounds under the Conditions of Extreme Continental Climate

2015 ◽  
Vol 1130 ◽  
pp. 19-22
Author(s):  
M.P. Belykh ◽  
S.V. Petrov ◽  
V.F. Petrov ◽  
A.Yu. Chikin ◽  
N.L. Belkova
Keyword(s):  
Microbial Communities ◽  
Gold Mining ◽  
Molecular Genetic ◽  
Heap Leaching ◽  
Bacterial Strains ◽  
Mining Operations ◽  
Biotechnological Potential ◽  
Enriched Cultures ◽  
Continental Climate

The methods of biodegradation are of special interest because they help solving environmental problems of wastes detoxification from gold-mining operations. The use of bacterial strains is a promising approach in the field of biotechnology to destruct cyanide-bearing compounds. The diversity of microbial communities both in heap in situ and in the enriched cultures was studied with molecular genetic methods. The differences in representation of bacteria, cultivated in unexploitable and operating heaps, are territory, site and heap specific. The strains of Pseudomonas sp. and Methylobacterium sp. possess the biotechnological potential and might be used in biodegradation of heap leaching wastes in extreme continental climate.

Quantum Computing and the Architectural, Engineering and Construction (AEC) Industry: Trends, Challenges, Near-Term Practical Opportunities and Future Outlook

2021 ◽  
Author(s):  
Oliver Barima ◽  
Keyword(s):  
Quantum Computing ◽  
Future Research ◽  
Communication Tools ◽  
Architectural Engineering ◽  
Complex Problems ◽  
Potential Impact ◽  
Near Term ◽  
Communication Methods ◽  
Industry Trends ◽  
Aec Industry

Digital computing and allied communication tools have been phenomenal, but they are fast reaching their technical limits and also their capacity to solve certain extant complex problems. Quantum computing has now emerged with a touted potential to deal with aspects of the latter complex problems and also significantly transform extant computing and communication methods. Yet, little studies exist in the Architectural, Engineering and Construction (AEC) industry related literature on quantum computing to boost awareness and also explore its prospective impact on the AEC industry. This study discusses the underpinning basic concepts, technologies and trends in the quantum computing domain to build awareness to boost Architecture, Engineering and Construction (AEC) industry capacity on the topic. The research dissects the challenges in this novel area. And also examines the near-term practical opportunities and potential impact of quantum computing on the AEC industry. The study concludes with suggestions for practice and future research.

scholarly journals Using in situ simulation to improve care of the acutely ill patient by enhancing interprofessional working: a qualitative proof of concept study in primary care in England

BMJ Open ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. e028572
Author(s):  
Amy Halls ◽  
Mohan Kanagasundaram ◽  
Margaret Lau-Walker ◽  
Hilary Diack ◽  
Simon Bettles
Keyword(s):  
Primary Care ◽  
Training Session ◽  
Medical Emergency ◽  
Future Research ◽  
Proof Of Concept ◽  
In Situ Simulation ◽  
Concept Study ◽  
Interprofessional Working ◽  
General Practices

ObjectiveAcutely unwell patients in the primary care setting are uncommon, but their successful management requires involvement from staff (clinical and non-clinical) working as a cohesive team. Despite the advantages of interprofessional education being well documented, there is little research evidence of this within primary care. Enhancing interprofessional working could ultimately improve care of the acutely ill patient. This proof of concept study aimed to develop an in situ simulation of a medical emergency to use within primary care, and assess its acceptability and utility through participants’ reported experiences.SettingThree research-active General Practices in south east England. Nine staff members per practice consented to participate, representing clinical and non-clinical professions.MethodsThe intervention of an in situ simulation scenario of a cardiac arrest was developed by the research team. For the evaluation, staff participated in individual qualitative semistructured interviews following the in situ simulation: these focused on their experiences of participating, with particular attention on interdisciplinary training and potential future developments of the in situ simulation.ResultsThe in situ simulation was appropriate for use within the participating General Practices. Qualitative thematic analysis of the interviews identified four themes: (1) apprehension and (un)willing participation, (2) reflection on the simulation design, (3) experiences of the scenario and (4) training.ConclusionsThis study suggests in situ simulation can be an acceptable approach for interdisciplinary team training within primary care, being well-received by practices and staff. This contributes to a fuller understanding of how in situ simulation can benefit both workforce and patients. Future research is needed to further refine the in situ simulation training session.

scholarly journals Synergetic monitoring of Saharan dust plumes and potential impact on surface: a case study of dust transport from Canary Islands to Iberian Peninsula

2011 ◽  
Vol 11 (7) ◽  
pp. 3067-3091 ◽  
Author(s):  
C. Córdoba-Jabonero ◽  
M. Sorribas ◽  
J. L. Guerrero-Rascado ◽  
J. A. Adame ◽  
Y. Hernández ◽  
...  
Keyword(s):  
Iberian Peninsula ◽  
Particle Deposition ◽  
Ground Level ◽  
In Situ Measurements ◽  
Saharan Dust ◽  
Dust Transport ◽  
Air Masses ◽  
Potential Impact

Abstract. The synergetic use of meteorological information, remote sensing both ground-based active (lidar) and passive (sun-photometry) techniques together with backtrajectory analysis and in-situ measurements is devoted to the characterization of dust intrusions. A case study of air masses advected from the Saharan region to the Canary Islands and the Iberian Peninsula, located relatively close and far away from the dust sources, respectively, was considered for this purpose. The observations were performed over three Spanish geographically strategic stations within the dust-influenced area along a common dust plume pathway monitored from 11 to 19 of March 2008. A 4-day long dust event (13–16 March) over the Santa Cruz de Tenerife Observatory (SCO), and a linked short 1-day dust episode (14 March) in the Southern Iberian Peninsula over the Atmospheric Sounding Station "El Arenosillo" (ARN) and the Granada station (GRA) were detected. Meteorological conditions favoured the dust plume transport over the area under study. Backtrajectory analysis clearly revealed the Saharan region as the source of the dust intrusion. Under the Saharan air masses influence, AERONET Aerosol Optical Depth at 500 nm (AOD500) ranged from 0.3 to 0.6 and Ångström Exponent at 440/675 nm wavelength pair (AE440/675) was lower than 0.5, indicating a high loading and predominance of coarse particles during those dusty events. Lidar observations characterized their vertical layering structure, identifying different aerosol contributions depending on altitude. In particular, the 3-km height dust layer transported from the Saharan region and observed over SCO site was later on detected at ARN and GRA stations. No significant differences were found in the lidar (extinction-to-backscatter) ratio (LR) estimation for that dust plume over all stations when a suitable aerosol scenario for lidar data retrieval is selected. Lidar-retrieved LR values of 60–70 sr were obtained during the main dust episodes. These similar LR values found in all the stations suggest that dust properties were kept nearly unchanged in the course of its medium-range transport. In addition, the potential impact on surface of that Saharan dust intrusion over the Iberian Peninsula was evaluated by means of ground-level in-situ measurements for particle deposition assessment together with backtrajectory analysis. However, no connection between those dust plumes and the particle sedimentation registered at ground level is found. Differences on particle deposition processes observed in both Southern Iberian Peninsula sites are due to the particular dust transport pattern occurred over each station. Discrepancies between columnar-integrated and ground-level in-situ measurements show a clear dependence on height of the dust particle size distribution. Then, further vertical size-resolved observations are needed for evaluation of the impact on surface of the Saharan dust arrival to the Iberian Peninsula.

scholarly journals Modern Solution for Fast and Accurate Inventorization of Open-Pit Mines by the Active Remote Sensing Technique—Case Study of Mikoszów Granite Mine (Lower Silesia, SW Poland)

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6853
Author(s):  
Jaroslaw Wajs ◽  
Paweł Trybała ◽  
Justyna Górniak-Zimroz ◽  
Joanna Krupa-Kurzynowska ◽  
Damian Kasza
Keyword(s):  
Computer Software ◽  
Mining Industry ◽  
Ground Surface ◽  
Open Pit ◽  
Mining Operations ◽  
Buffer Zones ◽  
Sw Poland ◽  
The Impact ◽  
Cloud Of Points ◽  
Lower Silesia

Mining industry faces new technological and economic challenges which need to be overcome in order to raise it to a new technological level in accordance with the ideas of Industry 4.0. Mining companies are searching for new possibilities of optimizing and automating processes, as well as for using digital technology and modern computer software to aid technological processes. Every stage of deposit management requires mining engineers, geologists, surveyors, and environment protection specialists who are involved in acquiring, storing, processing, and sharing data related to the parameters describing the deposit, its exploitation and the environment. These data include inter alia: geometries of the deposit, of the excavations, of the overburden and of the mined mineral, borders of the support pillars and of the buffer zones, mining advancements with respect to the set borders, effects of mining activities on the ground surface, documentation of landslide hazards and of the impact of mining operations on the selected elements of the environment. Therefore, over the life cycle of a deposit, modern digital technological solutions should be implemented in order to automate the processes of acquiring, sharing, processing and analyzing data related to deposit management. In accordance with this idea, the article describes the results of a measurement experiment performed in the Mikoszów open-pit granite mine (Lower Silesia, SW Poland) with the use of mobile LiDAR systems. The technology combines active sensors with automatic and global navigation system synchronized on a mobile platform in order to generate an accurate and precise geospatial 3D cloud of points.

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