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 …

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 …

While application of such technologies can be limited at operations such as open-pit mining, there are opportunities to implement mitigation technologies in underground mining to reduce GHG ...

About nine million Artisanal and Small-scale Gold Mining (ASGM) workers in Africa and people living near ASGM activities are highly exposed to geogenic and anthropogenic potentially toxic elements (PTEs). Despite the hazards and risks posed by ASGM being well characterized, coordinated multidisciplinary environmental …

Background. Underground miners can experience occupational health diseases due to exposure to particulate matter hazards. Objectives. The aim of the present study was to examine occupational ...

Human activities including gold mining causes extensive damages to natural landscape, contaminates water and contributes to the destruction of ecosystems ( …

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 ...

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.

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 …

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 …

The Houndé Mine and the Bissa Mine are open pit mines, whereas the Yaramoko Mine is an underground mine. Extractions at each of the three mines only started a few years prior to data collection; their expected lifetimes range between 10 to 21 years [45,46,47]. Table 1 compiles the diverse features of the three mining projects.

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 …

Mining activities, including prospecting, exploration, construction, operation, maintenance, expansion, abandonment, decommissioning and repurposing of a mine can impact social and environmental systems in a range of positive and negative, and direct and indirect ways. Mining can yield a range of benefits to societies, but it may also cause …

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.

Underground Gold Miner Exposure to Noise, Diesel Particulate Matter and Crystalline Silica Dust. March 2021. Journal of Health and Pollution 11 (29) DOI: …

These features include variations in dip, strike and width, late-stage faulting/shearing effects and vein continuity and type. Variations generally require close …

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 …

Underground Gold Miner Exposure to Noise, Diesel Particulate Matter and Crystalline Silica Dust. Authors: Edward K. Armah, Jeremiah A. Adedeji, Bright B. Boafo, and Amma …

Grade control geological mapping in underground gold vein operations. Gold veins show features relating to erratic grade distribution (nugget effect), and variable geometry and internal architecture. These features include variations in dip, strike and width, late-stage faulting/shearing effects and vein continuity and type. Read More

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 …

PengLIabc, Mei-fengCAIabc. Show more. Add to Mendeley. https://doi/10.1016/S1003-6326 (21)65744-8Get rights and content. Under a …

We analysed the source mechanisms of 75 large mining-related seismic events (M L 1.5–2.7) that caused damage to stopes in Kloof Gold Mine and used legacy 3D reflection seismic data to delineate the ore body and geological structures that may be correlated with mining-related seismic events. The 75 seismic events took place at depths of 1600 ...

The aim of the present study was to examine occupational exposures of underground miners to dust and diesel particulate matter and to identify exposure …

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.

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 …

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 …

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 …

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 …

The most significant reductions in GHG emissions from energy efficiencies are in underground mines from ventilation and cooling, up to 24%. Gold companies …

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 …

Heat stress is a major concern for the health, safety and productivity of miners working in hot and humid underground mines. At greater depth, heat inside underground mines increases due to geothermal gradient, heat released from high-capacity machinery, exposed rock surface, auto-compression of air, human metabolism, …

Underground Mi ne Workers in the South African Gold Mining I ndustry Article by Olukayode O. Alewi 1, Ademola M. Amosu 2, Ebenezer O. Daniel 3 1 Te xila American University Guyana

The mining industry has been crucial to the development of Ghana. As with all industries, mining has both advantages and disadvantages for the inhabitants of mineral-rich communities.

The environmental impact of abandoned mines is a global issue and, with the rise of public awareness and activism, in some cases, this has led to opposition to the development of new resources [4, 37].Previous reviews on select aspects of mine drainage are listed in Table 1.These reviews have considered the mechanisms of production of …

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 ...

Although Dethier et al. focused on gold mining, which occurs in 90% of the areas that they catalogued, there is also scope for expanding their research to understand the effects of the full life ...

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 …

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 …

A case study exploring the optimal transition depth from open pit to underground mining at AngloGold Ashanti's Geita gold mine in Tanzania is presented …

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.