Artisanal and small-scale gold mining (ASGM) continues to grow in more than 70 countries in the developing world, creating thriving local rural economies but also causing significant environmental contamination and health issues, with one particularly problematic issue involving the use of mercury in the gold extraction process. With the advent of the United Nations Minamata Convention on Mercury in 2009, a legally binding treaty aimed at reducing and where feasible eliminating mercury use, countries with significant ASGM populations require solutions for this sector. In April 2014, a mixed-methods rapid appraisal study was carried out over a three week period in the gold mining region of Kedougou, Senegal. During this time 80 structured interviews, 120 household surveys, physical measurements, observations and numerous informal interviews were utilized in conjunction with a comparative data analysis in order to create a national inventory of the ASGM sector for Senegal, to explore the sector’s socio-economic contribution to rural development in Senegal, and to provide a basis for discussing policy approaches needed to improve the sector. The results of this study show a thriving ASGM sector composed of approximately 67,000 people, producing an estimated 4.5 tonnes of gold per year and releasing approximately 5.2 tonnes of mercury into the environment. The methodologies used to create these estimates also provide in-depth information that illustrates an ASGM sector that is highly inter-connected with customary tenure practices and traditional agrarian livelihoods, and that is important for rural inhabitants in Senegal and other countries. This information can be utilized by the Senegalese and other governments to inform the policies that are being developed for the ASGM sector as they implement the obligations created by the Minimata Convention. / Graduate / 0503 / 0366 / 0617 / persaud.anthonyw@gmail.com

The main goal of this research was to investigate the spatial and temporal impacts of water siltation caused by Artisanal Small-scale Gold Mining (ASGM) on the underwater light field of the Tapajós River and its main tributaries (Jamanxim, Novo, Tocantinzinho, and Crepori rivers). In order to accomplish this, two fieldwork research trips were undertaken to collect data associated with water quality and radiometric data. This data provided information to quantify the underwater light field in water affected by a gradient of mining tailings intensity, clustered into five major classes ranging from 0 to 120 mg/L of total suspended solids (TSS) (Chapter 3). In general, with increased TSS from mining operations such as in the Crepori, Tocantinzinho, and Novo rivers, the scattering process prevails over absorption coefficient and, at sub-surface, scalar irradiance is reduced, resulting in a shallower euphotic zone where green and red wavelengths dominate. The effects of light reduction on the phytoplankton community was not clearly observed, which may be attributed to a low number of samples for proper comparison between impacted and non-impacted tributaries and/or to general low phytoplankton productivity in all upstream tributaries. In Chapter 4, aiming to extend the information derived from Chapter 3 over a 40-year period (1973-2012), the TSS concentration along the Tapajós River and its main tributaries was quantified based on in situ data and historical Landsat-MSS/TM/OLI data. Measurements of radiometric data were used to calibrate satellite atmospheric correction and establish an empirical relationship with TSS. The regression estimates TSS with high confidence from surface reflectance (ρ_surf (red)) up to 25%, which corresponds to approximately 110 mg.L-1. The combination of the atmospheric correction and the robust reflectance-based TSS model allowed estimation of TSS in the Tapajós River from the historical Landsat database (40 years). In Chapter 5, the role of the temporal changes of ASGM area in the water siltation over the last 40 years was investigated in four sub-basins: the Crepori, Novo, and Tocantins sub-basins (mined); and the Jamanxim sub-basin (non-mined), considering the landscape characteristics such as soil type and proximity to drainage system. ASGM areas were mapped for five annual dates (1973, 1984, 1993, 2001, and 2012) based on Landsat satellite images. Results showed that ASGM increased from 15.4 km2 in 1973, to 166.3 and 261.7 km2 in 1993 and 2012, respectively. The effects of ASGM areas on water siltation depends on several factors regarding ASGM activities, such as the type of mining, type of gold deposits, and intensity of gold mining, represented by number of miners and gold production. / Graduate / 0373 / 0768 / 0775 / lobo@uvic.ca

The mining, agricultural and energy sectors, along with the Department of Water Affairs (DWA) are critical role players in managing South Africa’s water resources. Water resources are under increasing pressure due to continuous population growth and economic development. It is critical to adopt a management policy that can lead to sustainable water supply. The National Water Act, 1998, (Act 36 of 1998), Section 56(1) instructs the Minister of Water Affairs to establish a Pricing Strategy for charges for any water use described in Section 21 of the Act. In light of this the Department implemented the Waste Discharge Charge System (WDCS). The WDCS is based on the polluter-pays principle and is focussed on load reduction on order to achieve or maintain resource quality objectives. One of the legal requirements in the mining industry is to have a water use license under Section 21 of the National Water Act of 1998 (South Africa, 1998b) which will lead to the application of the WDCS to the mining industry. This mini-dissertation assesses how the WDCS can be practically implemented from a gold mining perspective. The WDCS require the identification of point and diffuse sources from various pollution sources. A case study was used to determine what information and instruments will be required at a gold mine to implement the WDCS. The determining of the point and diffuse discharges require multidisciplinary studies with the integration of different spheres of the environment. To assist with this a GoldSim model was developed. The main function of the model was to determine the seepage rates per day from pollution sources using the available information. The seepage rates and the water qualities were used to determine the waste loads discharged to the environment. Using the instruments above, a methodology was provided to determine the point and diffuse sources of pollution and calculate the load that will be discharged to the environment which will form the basis of the WDCS. / Thesis (M. Environmental Management)--North-West University, Potchefstroom Campus, 2013

The mining, agricultural and energy sectors, along with the Department of Water Affairs (DWA) are critical role players in managing South Africa’s water resources. Water resources are under increasing pressure due to continuous population growth and economic development. It is critical to adopt a management policy that can lead to sustainable water supply. The National Water Act, 1998, (Act 36 of 1998), Section 56(1) instructs the Minister of Water Affairs to establish a Pricing Strategy for charges for any water use described in Section 21 of the Act. In light of this the Department implemented the Waste Discharge Charge System (WDCS). The WDCS is based on the polluter-pays principle and is focussed on load reduction on order to achieve or maintain resource quality objectives. One of the legal requirements in the mining industry is to have a water use license under Section 21 of the National Water Act of 1998 (South Africa, 1998b) which will lead to the application of the WDCS to the mining industry. This mini-dissertation assesses how the WDCS can be practically implemented from a gold mining perspective. The WDCS require the identification of point and diffuse sources from various pollution sources. A case study was used to determine what information and instruments will be required at a gold mine to implement the WDCS. The determining of the point and diffuse discharges require multidisciplinary studies with the integration of different spheres of the environment. To assist with this a GoldSim model was developed. The main function of the model was to determine the seepage rates per day from pollution sources using the available information. The seepage rates and the water qualities were used to determine the waste loads discharged to the environment. Using the instruments above, a methodology was provided to determine the point and diffuse sources of pollution and calculate the load that will be discharged to the environment which will form the basis of the WDCS. / Thesis (M. Environmental Management)--North-West University, Potchefstroom Campus, 2013

Thesis (M.A.)--Miami University, Dept. of Geography, 2008. / Title from first page of PDF document. Includes bibliographical references (p.95-104).

Thesis (M.Eng.)--University of Pretoria, 2004. / Includes summary. Includes bibliographical references (leaves 92-100).

A malária é uma doença tropical de grande relevância para a saúde pública no mundo. O objetivo do presente estudo foi construir a curva endêmica das espécies de Plasmodium falciparum e vivax, no período de 2003 a 2012 no Garimpo do Lourenço, verificando o efeito da periodicidade e da sazonalidade. Trata-se de um estudo ecológico, de série temporal e de caráter descritivo e exploratório, cujos dados foram obtidos do SIVEP-Malária, e o número de casos notificados ao mês foi utilizado como a variável dependente. Na amostra desta série 69% dos infectados eram do sexo masculino. As taxas cumulativas de infecção por gênero foram similares, sendo a infecção por P.vivax responsável por 75,4% das infecções em mulheres e por 72% do total de infecção em homens. As taxas por faixa etária foram de 72% entre 15 a 49 anos e de 39,6% em menores de 15 anos. Quanto à escolaridade, 66,57% não estudaram ou tinham menos de quatro anos de escolaridade. Observou-se um total de 12.357 infecções, de 12.056 casos novos e de 301 lâminas de verificação de cura (LVC). A infecção em garimpeiros foi responsável por cerca de 40% dessas infecções. Na avaliação da curva endêmica, realizada por meio do teste Augmented Dickey-Fuller, observou-se a ausência de estacionariedade das duas espécies (p > 0,05). A periodicidade, avaliada pelo teste G de Fisher, não evidenciou diferença estatisticamente significativa para os períodos da infecção no curso do ano para nenhuma das duas espécies (p > 0,05). O contexto observado nas zonas de garimpo da Amazônia Brasileira poderiam ser apoiadas por ações de controle ambiental e pesquisas, direcionados aos mosquitos transmissores, ao comportamento das espécies e aos aspectos climáticos, além do apoio à rede de serviços de saúde, de forma a interromper a cadeia de transmissão e controlar a endemia em patamares reduzidos nessa região garimpeira específica. / Malaria is a tropical disease of great relevance for the world’s public health. The objective of the present study was to construct the endemic curve of the species falciparum and vivax during the period starting from 2003 until 2012 in gold mining of Lourenço, assessing the effect of periodicity and seasonality. The present is an ecological time-series, descriptive and exploratory study, whose data were obtained from the SIVEP-Malária, using the number of cases per month as the dependent variable. 69% of those infected were male. Cumulative rates of infection by gender were similar, where vivax was responsible of 75.4% of the infections in females, and of 72% in males. Rates by age were 72% in those between 15 to 49 years old, and of 39.9% in those younger than 15 years old. Regarding literacy, 66.57% of the sample had never studied or had less than four years of schooling. It was observed a total of 12357 infections, 12056 new cases and 301 cure verification slides (CVS). Infection of gold miners was responsible of around 40% of the cases. Endemic curve assessment was performed using the Augmented Dickey-Fuller test, showing absence of seasonality of the two species (p > 0.05). Periodicity was assessed using the Fisher’s G test that did not show statistically significant difference for the infection periods along the year among the two species (p > 0.05). The context observed in the mining areas of the Brazilian Amazon could be supported by environmental control measures and research, targeted to mosquitoes, the behavior of species and climatic aspects and the support to the network of health services in order to stop the transmission chain and control endemic at low levels that specific gold mining region.

Magister Scientiae - MSc (Earth Science) / The city of Randfontein, in the Witwatersrand, hosts several slimes and tailings storage facilities which pose potential threat to the environment in the form of acid mine drainage (AMD). The latter, readily scavenges toxic metals, contaminating surrounding soils and water resources, thereby potentially compromising the overall environmental- and public health of the area. To this end, three slimes sections (section T001, T002 and T003) from the Gold One Millsite Slimes Complex were investigated, with the aim of understanding metal release from the slimes dam into the Randfontein area. To achieve this, the mineralogical and geochemical factors controlling metal release were investigated using combined core log analysis, cluster and discriminant analysis, x-ray diffraction analysis, bulk geochemical analysis, acid base accounting methods and selective sequential extraction procedures.

Submitted by Jordan (jordanbiblio@gmail.com) on 2017-01-23T15:28:44Z No. of bitstreams: 1 DISS_2015_Luzia Rodrigues Arruda.pdf: 4047859 bytes, checksum: dd594bb0b2c0bc6bcd94e3a1b4ce6095 (MD5) / Approved for entry into archive by Jordan (jordanbiblio@gmail.com) on 2017-01-27T14:40:36Z (GMT) No. of bitstreams: 1 DISS_2015_Luzia Rodrigues Arruda.pdf: 4047859 bytes, checksum: dd594bb0b2c0bc6bcd94e3a1b4ce6095 (MD5) / Made available in DSpace on 2017-01-27T14:40:36Z (GMT). No. of bitstreams: 1 DISS_2015_Luzia Rodrigues Arruda.pdf: 4047859 bytes, checksum: dd594bb0b2c0bc6bcd94e3a1b4ce6095 (MD5) Previous issue date: 2015-05-27 / CAPES / Em nossa sociedade, o trabalho da mulher em áreas garimpeiras é envolto em estereótipos, justificados pelas características biológicas, que terminam sendo legitimados no imaginário social de nossa população e que têm base na diferença de gêneros. Embora a chegada de mulheres a essas áreas, desempenhando funções análogas as dos homens, pareça indicar rompimento das barreiras convencionais da divisão sexual do trabalho, pesquisas sobre a mulher em áreas de garimpo demonstram que prevalecem as concepções de ignorância, ligadas a fatores da rustidez, insalubridade e solicitação de resistência física, considerando o garimpo um não lugar para o trabalho feminino. Por intermédio da realização da pesquisa, pretende-se compreender os saberes que fizeram com que essas mulheres se constituíssem garimpeiras na região de Peixoto de Azevedo, em Mato Grosso, no período que vai de meados da década 1970 a meados da década de 1980, exercendo uma função de prestígio, como donas de “dragas” e “balsas”. A fundamentação teórica da pesquisa baseia-se em Berta Becker (1990), Guimarães Neto (1996), Guanaes (2001), Borges (2002) e Barrozo (2007), que fornecem subsídios para a compreensão da formação dos garimpos; em relação à presença feminina no garimpo, opta-se pelos autores Figueredo (1999), Carola (2002), Hirata (2002), Caleiro e Rodrigues (2007), que identificam a quais condições essas mulheres estavam sujeitas em áreas de mineração. No que diz respeito às relações raciais, os autores escolhidos são Hasenbalg (1979), Nogueira (1985), Muller (2006), Fernandes (1964) e Petruccelli (2007). O caminho metodológico será pavimentado com Minayo (2007), Meihy (1994), Thompson (1987) e Queiroz (1991). Esta pesquisa se desenvolveu numa abordagem qualitativa, numa perspectiva da metodologia da História Oral, utilizando a técnica da História de Vida, com o objetivo de reconhecer o protagonismo das mulheres negras que a história oficial silencia. Nessa perspectiva, os resultados da pesquisa vêm reconhecer o protagonismo da mulher negra em áreas garimpeiras, quebrando os estereótipos que estavam postos. / In our society, the work of women in gold mining areas is surrounded by stereotypes justified by biological characteristics, which end up being legitimated in the social imaginary of our population and that it is based on gender difference. The arrival of women to these areas, performing similar roles to those of men, may seem to indicate breaking of conventional barriers of sexual division of work. However, research about women in gold mining areas demonstrates prevalent conceptions of ignorance, linked to factors such as ruggedness, insalubrity and demand for physical endurance, and the idea that there is no place for female workers in gold mines. This research aims at understanding what reasoning made them become gold miners in Peixoto de Azevedo region in Mato Grosso, from mid-1970s to mid-1980s, having achieved high level roles as owners of “dredges” and “ferry-boats”. The theoretical principle of the research is based on Berta Becker (1990), Guimarães Neto (1996), Guanaes (2001), Borges (2002) and Barrozo (2007), which provide foundations to understand the development of gold mining; in relation to the female presence in mining, we opted for the authors Figueredo (1999), Carola (2002), Hirata (2002), Caleiro and Rodrigues (2007), who identify the conditions these women were subjected to in mining areas; regarding race, the chosen authors are Hasenbalg (1979), Nogueira (1985), Muller (2006), Fernandes (1964) and Petruccelli (2007). The methodological path will be paved with Minayo (2007), Meihy (1994), Thompson (1987) and Queiroz (1991). This research was developed using a qualitative approach, in a perspective of the methodology of Oral History, using the technique of Life History aiming at recognizing the role of black women that the official history silences. In this perspective, the research results recognize the role of black women in gold mining areas, breaking the stereotypes that existed.

A malária é uma doença tropical de grande relevância para a saúde pública no mundo. O objetivo do presente estudo foi construir a curva endêmica das espécies de Plasmodium falciparum e vivax, no período de 2003 a 2012 no Garimpo do Lourenço, verificando o efeito da periodicidade e da sazonalidade. Trata-se de um estudo ecológico, de série temporal e de caráter descritivo e exploratório, cujos dados foram obtidos do SIVEP-Malária, e o número de casos notificados ao mês foi utilizado como a variável dependente. Na amostra desta série 69% dos infectados eram do sexo masculino. As taxas cumulativas de infecção por gênero foram similares, sendo a infecção por P.vivax responsável por 75,4% das infecções em mulheres e por 72% do total de infecção em homens. As taxas por faixa etária foram de 72% entre 15 a 49 anos e de 39,6% em menores de 15 anos. Quanto à escolaridade, 66,57% não estudaram ou tinham menos de quatro anos de escolaridade. Observou-se um total de 12.357 infecções, de 12.056 casos novos e de 301 lâminas de verificação de cura (LVC). A infecção em garimpeiros foi responsável por cerca de 40% dessas infecções. Na avaliação da curva endêmica, realizada por meio do teste Augmented Dickey-Fuller, observou-se a ausência de estacionariedade das duas espécies (p > 0,05). A periodicidade, avaliada pelo teste G de Fisher, não evidenciou diferença estatisticamente significativa para os períodos da infecção no curso do ano para nenhuma das duas espécies (p > 0,05). O contexto observado nas zonas de garimpo da Amazônia Brasileira poderiam ser apoiadas por ações de controle ambiental e pesquisas, direcionados aos mosquitos transmissores, ao comportamento das espécies e aos aspectos climáticos, além do apoio à rede de serviços de saúde, de forma a interromper a cadeia de transmissão e controlar a endemia em patamares reduzidos nessa região garimpeira específica. / Malaria is a tropical disease of great relevance for the world’s public health. The objective of the present study was to construct the endemic curve of the species falciparum and vivax during the period starting from 2003 until 2012 in gold mining of Lourenço, assessing the effect of periodicity and seasonality. The present is an ecological time-series, descriptive and exploratory study, whose data were obtained from the SIVEP-Malária, using the number of cases per month as the dependent variable. 69% of those infected were male. Cumulative rates of infection by gender were similar, where vivax was responsible of 75.4% of the infections in females, and of 72% in males. Rates by age were 72% in those between 15 to 49 years old, and of 39.9% in those younger than 15 years old. Regarding literacy, 66.57% of the sample had never studied or had less than four years of schooling. It was observed a total of 12357 infections, 12056 new cases and 301 cure verification slides (CVS). Infection of gold miners was responsible of around 40% of the cases. Endemic curve assessment was performed using the Augmented Dickey-Fuller test, showing absence of seasonality of the two species (p > 0.05). Periodicity was assessed using the Fisher’s G test that did not show statistically significant difference for the infection periods along the year among the two species (p > 0.05). The context observed in the mining areas of the Brazilian Amazon could be supported by environmental control measures and research, targeted to mosquitoes, the behavior of species and climatic aspects and the support to the network of health services in order to stop the transmission chain and control endemic at low levels that specific gold mining region.