(PDF) Radon in Underground Mines
In underground mining, there are some methods to mitigate radon gas content, such as the application of sealant coating (e.g., shotcrete) in walls and roof; bulkheads to isolate fresh air from the ...
اقرأ أكثرThe hazardous nature of small scale underground mining in …
According to the Minerals Commission of Ghana, the small scale gold mining sector contributed 7% of the $694,970,543 gold revenue to the government in 2002. According to Ntibrey (2016), artisanal and small scale mining contributed 34.3% (1.49 million ounces) of total gold production in 2014, and 33.9% (1.44 million ounces) in 2013.
اقرأ أكثرFull article: Stochastic stope design optimisation …
An application at an underground gold mine employing sublevel open stoping highlights the integration and management of grade uncertainty to define risk-resilient stope design. KEYWORDS: Stope design optimisation. stochastic integer programming. underground …
اقرأ أكثرMining and biodiversity: key issues and research needs in …
2. The many ways mining activities impact biodiversity. Mining affects biodiversity at multiple spatial scales (site, landscape, regional and global) through direct (i.e. mineral extraction) and indirect processes (via industries supporting mining operations, and external stakeholders who gain access to biodiversity-rich areas as the result of …
اقرأ أكثرToxics | Free Full-Text | Socio-Environmental Risks Linked with Mine …
There is a need to define mine tailings in a clear, precise, multidisciplinary, transdisciplinary, and holistic manner, considering not only geotechnical and hydraulic concepts but also integrating environmental and geochemical aspects with implications for the sustainability of mining. This article corresponds to an independent study that …
اقرأ أكثرMining is bad for health: a voyage of discovery
Underground coal mining is far more dangerous than surface mining, including the loathsome removal of whole mountaintops to access coal seams. ... probably enhanced by arsenic exposure in the gold mining areas, in uranium miners across Ontario has been reported ... 2016; 22:4887–4893. doi: 10.12659/MSM.901820. [PMC free …
اقرأ أكثرChallenges and new insights for exploitation of deep …
PengLIabc, Mei-fengCAIabc. Show more. Add to Mendeley. https://doi/10.1016/S1003-6326 (21)65744-8Get rights and content. Under a …
اقرأ أكثرIntegrated stochastic optimisation of stope design …
1. Introduction. Long-term underground mine production scheduling conventionally consists of the definition of the stope layout, the access design, the …
اقرأ أكثرAssessing the effects of gold mining on environment: A …
The gold mining company conducts needs assessments of the community by involving a variety of community members: 14 (100)% 2: The company do not conducted study on environmental and social impacts: 4 (28.5%) 10 (71.5%) 3: It increase the chance of land slide: 4 (28.5%) 10 (71.5%) 4: The gold mining produce some dangerous …
اقرأ أكثرTowards Safety from Toxic Gases in Underground Mines …
Figure 1 shows an example of a buildup and explosion of toxic gases, such as methane (CH 4), nitrogen dioxide (NO 2), and hydrogen sulphide (H 2 S) in an underground mine. The inhalation of an overlooked black damp in mines, which is a mixture of dust, carbon dioxide, and nitrogen [], gradually overcomes and destroys the …
اقرأ أكثرInvestigating the Effects of Personality on the Safety Behavior of Gold
Based on prior research on the relationship between personality and safety behavior, we construct a moderated mediation model that tests the effects of each of the Big Five personality traits (openness, conscientiousness, agreeableness, extraversion, and neuroticism) on the safety behavior of gold miners in Ghana. The model included safety …
اقرأ أكثر(PDF) Assessing the effects of gold mining on
Assessing the effects of gold mining on environment: A case study of Shekiso district, Guji zone, Ethiopia.pdf Available via license: CC BY 4.0 Content may be subject to copyright.
اقرأ أكثرHeavy Metal Pollution from Gold Mines: Environmental Effects …
Mining activities can lead to the generation of large quantities of heavy metal laden wastes which are released in an uncontrolled manner, causing widespread contamination of the ecosystem. Though some heavy metals classified as essential are important for normal life physiological processes, higher concentrations above stipulated …
اقرأ أكثرHybrid method for analyzing air thermal conditions in underground …
1. Introduction. Heat is one of the main problems in underground mining, and its effects can lead to various illnesses and reduce the productivity of mine workers (Hartman et al., 2012); (McPherson, 2012).Previous studies have established a relationship between mine air temperature, humidity, and fatigue in mines; the higher the mine air temperature and …
اقرأ أكثرEnvironmental, Social, and Governance Considerations in …
In operations that use the sublevel stoping mining method, production scheduling takes into account factors, including ore reserve envelopes, ore grade averages, equipment capacity, feed controls to the mill, and geotechnical restrictions, across the scheduling horizon. Mathematical programming is one of the most effective methods for …
اقرأ أكثرReview of Environmental and Health Impacts of Mining in …
Introduction. Mineral wealth is an important asset that can be used to stimulate or enhance economic growth and spur infrastructure development, including the building of schools, hospitals and road networks.1 Mining has played a substantial role in the development of Ghana, which is second only to South Africa in terms of gold …
اقرأ أكثرEvaluation of the Effect of Gold Mining on the …
Gold mining in developing countries is the main source of income for 30 million miners globally. About 12% of global gold production is through illegal mining that provides a significant economic benefit to …
اقرأ أكثرStope Sequencing Optimization for Underground Mines …
Sublevel stoping is an underground mining technique for mines used to extract massive or tabular, intermediate to very thick, steeply dipping orebodies with competent rock types [1, 2].Stopes are underground excavations made by removing ore from surrounding rocks [].After a stope is drilled and blasted, the fragmented ore is then …
اقرأ أكثرImpacts for half of the world's mining areas are …
An underground shaft opening will lead to different types of damage compared with open-pit excavations and waste-disposal areas. ... pinpoint pollution sources and evaluate the effect of mining on ...
اقرأ أكثرSurface multi-hazard effect of underground coal mining
Underground coal mining often causes subsidence, goaf landslides, fissures, and even hazard chains, seriously damaging the ecological environment. To address the ecological vulnerability of mining areas is key to exploring the development characteristics and failure mechanisms of surface multi-hazards. Taking the Shuiliandong …
اقرأ أكثرDeforestation and Forest Degradation Due to Gold Mining …
While deforestation rates decline globally they are rising in the Western Amazon. Artisanal-scale gold mining (ASGM) is a large cause of this deforestation and brings with it extensive environmental, social, governance, and public health impacts, including large carbon emissions and mercury pollution. Underlying ASGM is a broad network of factors that …
اقرأ أكثرOverview of Underground Metalliferous Mining | SpringerLink
2.2 Stages in Underground Metalliferous Mining. The underground mining for mineral exploitation comprises of mainly three stages viz. making access to the orebody, initial/box-cut excavation and final excavation of ore. The primary access to the underground mine is in the form of shaft, incline, decline or adit.
اقرأ أكثرOccupational Respirable Mine Dust and Diesel Particulate …
The aim of the present study was to examine occupational exposures of underground miners to dust and diesel particulate matter and to identify exposure groups with high potential to develop associated health effects due to the presence of dust and diesel particulate matter (DPM) hazards in an underground gold mine in Ghana.
اقرأ أكثرFinancial and Operational Risk Management: Inventory Effects …
We use a fine-grained data set comprising the financial and operational risk management decisions of gold miners from 2003 to 2011 to empirically assess the effects of risk management on inventory. Faced with volatile gold prices, miners may manage (output) risk financially by committing to sell future gold production and lock in prices.
اقرأ أكثرA Deviation-Minimization Approach to Short-Term Underground Mine
Production forecasts derived from the medium-term schedule represent the best path forward for underground mining operations to achieve corporate and operational goals. Unforeseen circumstances, such as equipment breakdown, can cause significant deviations from established production forecasts in the short term. Such situations …
اقرأ أكثرReview on Effects of Mining in Ghana: The Case …
DOI: 10.1016/S0301-4207(00)00042-8. 3. Yeboah JY. ... Artisanal and small-scale gold mining (ASGM), which is quickly surging and largely practiced across Sub-Saharan Africa, is a substantial ...
اقرأ أكثرDeep Mining: A Rock Engineering Challenge
Increasing demand for metals caused by global economic growth and exploitation of shallow mineral deposits forces mineral extraction to go deeper. A direct consequence of this development is an increase in rock pressure-related mining problems. The role of rock engineering in the design and operation of deep mines is discussed in …
اقرأ أكثرTechnical Review of Mine Dewatering System Case Study Underground Gold
Technical Review of Mine Dewatering System Case Study Underground Gold Mine PT Bumi Suksesindo ... Technical Review of Mine Dewatering System Case Study Underground Gold Mine PT Bumi Suksesindo ICITID EAI DOI: 10.4108/eai.30-8-2021.2311502. Tedy Agung Cahyadi 1,*, Sevian Anggoro 2, ...
اقرأ أكثرPotential implications of gold-mining activities on …
Human activities including gold mining causes extensive damages to natural landscape, contaminates water and contributes to the destruction of ecosystems ( …
اقرأ أكثرOccupational Respirable Mine Dust and Diesel …
The aim of the present study was to examine occupational exposures of underground miners to dust and diesel particulate matter and to identify exposure …
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