Artisinal Gold Mining in Ghana.pptx xxxx

Artisinal Gold Mining in Ghana.pptx xxxx

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  Artisanal gold miningin Ghana Presentation by Prof. Thomas Robins, University of Michigan, USA, Department of Environmental Health
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  Integrated Assessment ofArtisanal and Small-Scale Gold Mining in Ghana—Part 1: Human Health Review Int J Environ Res Public Health. 2015 May; 12(5): 5143–5176. Niladri Basu,1,* Edith Clarke,2 Allyson Green,3 Benedict Calys-Tagoe,4 Laurie Chan ,5 Mawuli Dzodzomenyo,6 Julius Fobil,6 Rachel N. Long,3 Richard L. Neitzel,3 Samuel Obiri,7 Eric Odei,2 Lauretta Ovadje,3 Reginald Quansah,6,8 Mozhgon Rajaee ,3 and Mark L. Wilson9 This report is one of three synthesis documents produced via an integrated assessment (IA) that aims to increase understanding of artisanal and small-scale gold mining (ASGM) in Ghana. An IA framework was utilized to analyze economic, social, health, and environmental data, and co-develop evidence-based responses with pertinent stakeholders. The current analysis focuses on the health of ASGM miners and community members The results provide evidence from across multiple Ghanaian ASGM sites that document relatively high exposures to mercury and other heavy metals, occupational injuries and noise exposure. The work also reviews limited data on psychosocial health, nutrition, cardiovascular and respiratory health, sexual health, and water and sanitation. Taken together, the findings provide a thorough overview of human health issues in Ghanaian
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  Introduction • Gold frominformal mines may represent 20%–30% of the world’s output. • In 2012, gold accounted for 43% of Ghana’s national exports. • The proportion of Ghana’s gold that is mined through ASGM increased from 6% in 2000 to 23% in 2010 • Challenges for human health: • most mining community residents are impoverished and live in rural settings that lack basic resources such as health care services and clean potable water • Besides the social context of these communities, mining activities ravage landscapes and contaminate ecosystems and their services
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  Figure 1 Framework linkingkey drivers and impacted human/natural systems. Principal domains of inquiry are highlighted. Framework is adapted from the Millennium Ecosystem Assessment
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  • Over-arching policy-relevantquestion: What are the causes, consequences and correctives of artisanal and small-scale gold mining in Ghana? • More specifically: What alternatives are available in resource-limited settings in Ghana that allow for artisanal and small-scale gold-mining to occur in a manner that is safe for ecological health and human health without affecting near- and long-term economic prosperity? • Present evidence from Ghanaian ASGM sites documents relatively high exposures to mercury and other heavy metals, as well as health impacts through injuries and noise exposure. • Also reviews limited data on psychosocial health, nutrition, cardiovascular and respiratory health, sexual health, and water and sanitation. • A rigorous and detailed exposure assessment that links source, fate, and exposure (ultimately linked to adverse health outcomes) is lacking. • Often lacking are data on the longer-term adverse health outcomes that manifest as, for example, subtle loss of neurological function, reduced physical capacity, or psychological stress
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  • In mostASGM settings, women and children are actively engaged in ASGM activities and are thus frequently faced with health- or life-threatening exposures . In addition to individuals actively involved in mining, in ASGM areas there is often little separation between residential and mining activities • While biomass cooking smoke is a major concern for respiratory health in rural communities, ASGM miners may also be exposed to respirable crystalline silica in ore, which may exceed 30% crystalline silica in some gold ore dust [111]. Long-term exposure to crystalline silica can cause silicosis, an irreversible pulmonary fibrosis that can exhibit restrictive and obstructive lung disease patterns. • Lack of sanitation facilities and safe drinking water sources in small-scale gold mining communities may contribute to the spread of infectious diseases. According to one survey in the Upper East Region, 100% of households surveyed in an ASGM community reported the bush or field as their main toilet facility, compared to only 18% of households surveyed throughout Ghana • Unreclaimed mine pits can reportedly fill with water to create mosquito breeding grounds . Local health authorities in the Eastern Region of Ghana reported malaria, anaemia, hypertension and diarrhoea as the common diseases that women working in galamsey camps complain of
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  Mercury Exposure • Theuse of mercury for gold extraction from the ore (amalgamation) is widely practiced among many small-scale miners because it is simple, inexpensive, readily available, and has a long history of use in the region. With global expansion of ASGM and ubiquitous mercury use in the sector, ASGM accounts for an estimated 37% of global atmospheric mercury emissions, and released 727 tons into the atmosphere in 2010. Additionally, ASGM is responsible for 800 tons of mercury per year released to water and land. Sub-Saharan Africa is second only to East Asia in total global emissions. • In ASGM communities, exposures to elemental mercury largely occur through amalgam burning • Studies focusing on urine biomarkers (Table A1) and hair biomarkers (Table A2) clearly documented that all miners were exposed to appreciable mercury levels, that exposures vary greatly, and that a majority of participants have exposure biomarker levels that exceed guideline values. Within a mining site, those who exclusively burn amalgam had the highest urinary mercury levels • chronic mercury poisoning produces irritability, nervousness or excitability, insomnia, dysarthria (motor speech disorder), incoordination, and hallucinations. Acute poisoning causes dizziness, vomiting and headaches
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  • This paperfocuses on the causes, status, trends, and consequences of ecological issues related to ASGM activity in Ghana. • It reviews dozens of studies and thousands of samples to document evidence of heavy metals contamination in ecological media across Ghana. Soil and water mercury concentrations were generally lower than guideline values, but sediment mercury concentrations surpassed guideline values in 64% of samples. Arsenic, cadmium, and lead exceeded guideline values in 67%, 17%, and 24% of water samples, respectively. • Additional ASGM-related stressors on environmental quality and ecosystem services include deforestation, land degradation, biodiversity loss, legacy contamination, and potential linkages to climate change. Integrated Assessment of Artisanal and Small- Scale Gold Mining in Ghana—Part 2: Natural Sciences Review Int. J. Environ. Res. Public Health 2015, 12(8), 8971-9011; https://doi.org/10.3390/ijerph120808971
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  Figure 2. Keyecological hazards in the Ghanaian artisanal and small-scale gold mining (ASGM) sector.
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  • Figure 12. Imagesof land disturbances at ASGM sites in Tarkwa, Western Region (upper and middle photos) and the Talensi District, Upper East Region (bottom photo).
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  Policy brief 33110| May 2016 • • Small-scale mining contributes about 30% of Ghana’s total gold output and provides livelihoods for many people. This study examines the impact of Chinese involvement in the sector, much of it illegal and controversial • The authors found extensive collaboration and collusion between Chinese miners/companies and Ghanaian miners, as well as with Ghanaian traditional leaders and government officials. • • The economic impact of Chinese involvement in the sector has been highly significant – indicated by the fact that total gold production from small-scale production has increased 7-fold from 2005 to 2013. • The authors’ policy recommendations include legislative and regulatory changes to regulate foreign involvement in the sector and better strategies to address environmental degradation and corruption. • from 2010 onwards, the arrival of foreign miners in significant numbers became evident in a new gold rush. Chinese miners in particular were attracted by the high price of gold; but problems of violent conflict between locals and Chinese miners as well as environmental devastation were reported in the media from 2012 onwards.
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  I • On 15May 2013, President Mahama established an Inter-Ministerial Task Force to combat illegal small-scale mining. The military-style Task Force was primarily aimed at ‘flushing out’ of foreign miners, and by mid-July 2013 the Ghana Immigration Service reported that 4,592 Chinese nationals had been deported, as well as small numbers of other foreign nationals3 • The Chinese introduced heavy machinery in the form of excavators and large wash plants known as ‘trommels’, vastly increasing the volume of gold that could be extracted. Large amounts of money could be made, especially with the high price of gold from 2008 onwards, and news spread rapidly back in Shanglin County, with large numbers of miners migrating to Ghana. At the height of Chinese involvement in 2012 and 2013, media reports from China stated that almost 50,000 Chinese nationals had migrated to Ghana for purposes of small-scale gold mining •