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Filter: Project 1223 Report
07 May 2010 | report | project: 1223   Information about the Project Sites in Zimbabwe
The Kadoma-Chakari area lies within one of the largest gold belts (greenstone belts) of Zimbabwe and has the highest density of small scale gold miners, millers and panners of all the country’s gold belts. Geographically, the area occurs about 150 km south-west of Harare along the main Harare-Bulawayo highway and is located within the Zambezi Basin (Fig. 1 and 2). Access into the mining areas from Kadoma City is very good along paved all-weather roads and good dry season roads. The Zambezi Basin and its water resources are shared by eight of the fourteen Southern African Development Community (SADC) states.
07 May 2010 | report | project: 1223   Environmental Assessment Final Report, Kadoma-Chakari area, Zimbabwe
In response to a request from the Government of Zimbabwe and in the framework of the general project entitled 'Removal of barriers to the introduction of cleaner artisanal gold mining and extraction technologies', a contract was signed in September 2003 between the United Nations Industrial Development Organisation (UNIDO) and BRGM, in order to carry out the environmental and health assessment in the Kadoma-Chakari area. This area is characterised by the presence of thousands of artisanal gold miners using mercury for gold recovery.
07 May 2010 | report | project: 1223   Equipment Specification for the Demonstration Units in Zimbabwe
In Zimbabwe, it is estimated that there are between 300,000 and 400,000 artisanal gold miners sustaining the livelihood of at least 2 million people. There are 200 registered “formal” large to medium-scale gold mines and thousands of small-scale gold operations producing, according to the official statistics, up to 5 tonnes of gold annually. This production from a large contingent of miners seems to be underestimated and most gold must be smuggled out of the country where prices are more attractive. About 20,000 to 30,000 people are directly involved in gold extraction in the Kadoma-Chakari region selected by the Global Mercury Project to implement demonstration units.
07 May 2010 | report | project: 1223   Activities in Zimbabwe 2002-2007 Final Report
It is axiomatic that throughout the world artisanal and small-scale mining (ASM) is driven by poverty. This is especially the case in Zimbabwe, where 80% of the population is unemployed, with most people living in conditions of extreme poverty. Mining can produce environmental and health risks but also significant contributions to low income communities and the economy, and there is a growing need for development assistance in this sector in Zimbabwe.
07 May 2010 | report | project: 1223   Health Assessment in Kadoma, Zimbabwe Final Report
Kadoma is a typical small-scale mining area with approximately 235,000 inhabitants in the Midlands in Zimbabwe. Artisanal small-scale miners use mercury to extract gold from the ore. It is estimated that approximately a few hundred thousand people work and live in similar small scale mining communities all over Zimbabwe. In the selected area there is no clean and safe drinking water, no waste disposal for the toxic mercury or any other waste or human discharge. Hygienic standards are extremely low and are a reason for many infectious diseases such as diarrhoea, malaria and parasitism.
07 May 2010 | report | project: 1223   A Sociological Survey of Small-scale Artisanal Gold Mining in the Kadoma-Chakari Area
Small-scale artisanal gold mining is a growing sector in Zimbabwe whose effects cannot be ignored. In the Kadoma-Chakari area this sector has significantly increased since the 1990’s. This can be linked with the downscaling of mining operations of the main mine in the area, Dalny Mine owned by Falcon Gold. This left the greater community in the area unemployed and as a means of survival most are engaged in small-scale gold mining as a self-employment drive to sustain their livelihoods.
07 May 2010 | report | project: 1223   Introducción de Tecnologías Limpias en la Minería Artesanal de Oro
Presentacion.
07 May 2010 | report | project: 1223   Contaminación por mercurio en la minería artesanal en el Bloque B de El Callao: Evaluación de la salud
Presentacion.
07 May 2010 | report | project: 1223   Uniidades de Demonsttraciión y Campaña de Educaciión para Miineros Arttesanalles de Oro
Presentacion.
07 May 2010 | report | project: 1223   Mercurio y Enfermedades Inmunológicas en Comunidades de Minería Artesanal de Oro: ¿Una Interacción Peligrosa?
Presentacion.
07 May 2010 | report | project: 1223   Mercurio y Cianuro en Minería Artesanal de la Provincia de El Oro, Ecuador (Presentación)
Descripción de la Presentación: • Proceso de extracción del oro en la minería artesanal en Ecuador. • Relación Oro producido-Mercurio gastado • Balance y destino del Mercurio. • Mercurio en aire exalado en la Minería Artesanal del Ecuador. • Proceso de Cianuración • La minería y el Ecosistema
07 May 2010 | report | project: 1223   Mercury Pollution from Artisanal Gold Mining in Block B, El Callao, Bolívar State, Venezuela
The technical and health aspects of the gold mining activity conducted by artisanal and small-scale miners in the Block B, El Callao, Bolívar State, Venezuela, were evaluated. The area, with 1731 inhabitants, is a legal mining concession of CVG-Minerven rented to small-scale mining individuals/companies. Miners extract the ore from 30-80 m deep shafts using explosives and transport it in small trucks to the Processing Centers (locally known as “molinos”) to be crushed, ground, concentrated and amalgamated. There are 28 active Processing Centers in the Block B area producing about 1 to 2 tonnes Au/a. By using copperamalgamating plates to amalgamate the whole ground ore, a large amount of mercury is lost with the tailings.
07 May 2010 | report | project: 1223   Mercury Bioaccumulation by Aquatic Biota in Hydroelectric Reservoirs: Review and Consideration of the Mechanisms
The mercury bioaccumulation process in man-made reservoirs is a phenomenon recently (1969) recognized in several countries such as USA, Canada, Sweden, Finland, Brazil. In many cases, no specific pollution source is identified and many occurrences of elevated Hg levels in tissues of fish have been detected in regions considered to be remote from sources of Hg. In impoundments the increase of mercury bioavailability are usually related with quality and amount of flooded vegetation, bacterial activitiy in sediments and high level of humosity of the surface waters. Dissolved organic acids, abundant in darkwater aquatic systems, increase the reactivity of all forms of mercury both present in flooded sediments and deposited from atmosphere. The recent discovery of water-soluble species of mercury in the atmosphere, usually produced by coal-wood combustion, named reactive gaseous mercury (RGM), has heightened concerns that this form of mercury can react quickly in large surface reservoirs increasing the bioavailability of the pollutant. It has also been demonstrated the capability of some organisms of methylating mercury organic complexes in their intestines.
07 May 2010 | report | project: 1223   Advisory Assistance on Avoidance Mercury Pollution from Artisanal Gold Mining Operation in Bolivar State, Venezuela
Mercury has been misused by artisanal miners all over the State of Bolivar. A gold production in Venezuela of around 18 tonnes annually likely results mercury emission in the same magnitude. Symptoms of mercurialism in miners and gold dealers were already detected by various researchers. he high content of organic acids in sediments and waters of the Caroni River and other darkwater streams favours oxidation of metallic mercury dumped by mining activities or precipitated from the atmosphere. Soluble Hg-organic complexes can be transformed into methylmercury and quickly taken up by aquatic biota. Bioaccumulation occurs predominantly by food intake rather than via fish respiration. In some mining areas the process is occurring at slow rates but more information is needed.
07 May 2010 | report | project: 1223   Mercury Pollution from Artisanal Gold Mining in Block B, El Callao, Bolivar State, Venezuela: Health and Technological Assessment
The technical and health aspects of the gold mining activity conducted by artisanal and small-scale miners in the Block B, El Callao, Bolivar State, Venezuela, were evaluated. The population of Block B is estimated to be around 1730 people, with about 30% of children with age below 15 and the large majority of the adults directly involved in mining. About 1/5 of the population is illiterate and 1/4 does not have any kind of technical education. The area is a legal mining concession of CVG-Minerven rented to small-scale mining individuals/companies. Miners extract the ore from 30-80 m deep shafts using explosives and transport it in small trucks to the Processing Centers (locally known as “molinos”) to be crushed, ground, concentrated and amalgamated.
07 May 2010 | project-document | project: 1223   Project Document - Tanzania
07 May 2010 | report | project: 1223   Socio-Economic Survey of Rwamagasa Mining Site ing Geita District
Mercury is used in artisanal mining, whereby, for every gram of gold collected, about two grams of mercury are dispersed into the environment Artisanal mining activities provide income to the poorest segment of society in many developing countries, including ethnic minorities, a great majority of these miners being women and children. Plans are underway for introducing cleaner artisanal gold mining and extraction technologies. The primary target beneficiaries of the program will be artisanal miners – men and women alike. In order to effectively introduce this new program on cleaner and more efficient artisanal gold mining and extraction technologies, a study of the mining communities - their social services, their activities, their surroundings, and their food and water consumption patterns - was required. This socio-economic study was carried out in one representative mining site, namely, Rwamagasa Village, Rwamagasa Ward in Geita District, Mwanza Region, Tanzania.
07 May 2010 | report | project: 1223   Information about the Project Site (Rwamagasa, Geita District) in Tanzania
Gold has been mined in Tanzania for more than 100 years. The gold production from artisanal and small-scale mining (ASM) in Tanzania is not well established but some authors indicated that the ASM might produce something around 4 tonnes of gold per annum1. This seems very low for the large contingent of people involved in this activity. It is difficult to estimate the exact number of people directly involved in gold mining activities in Tanzania as miners migrate from one site to another going after easily exploitable gold. A population around 300,000 was estimated in 19992. The gold rush for the Lake Victoria Goldfields started when the gold price increased at the beginning of the 80s. There are 7 main regions at the south of Lake Victoria where gold miners have been operating. These regions are known locally as “mining centers”.
07 May 2010 | report | project: 1223   Final Report for an Assessment of the Environment and Health in the Rwamagasa area, Tanzania
Rwamagasa is located in Geita District, which has an area of 7,825 km², 185 villages, and a population around 712,000 (census of 2002). The number of artisanal miners in the Geita District is unknown by it is estimated to be as many as 150,000, most of whom are illegal panners. Primary artisanal workings in the Rwamagasa area are centred on quartz veins in sheared, ferruginous, chlorite mica schists. Grab samples of vein and wall rock grade 6-62 g/t Au. The only legal mining in the Rwamagasa area is carried out within the boundaries of the Primary Mining Licence held by Blue Reef Mines where approximately 150 people are involved in mining and mineral processing activities. This is the only site in the Rwamagasa area where primary ore is being mined underground. All other mineral processing activity of any significance is concentrated at the northern margin of Rwamagasa, especially on the land sloping down to the Isingile River. In this area, there are about 30 groups of historic and active tailings dumps and about ten localities where small (200 litre) ball mills are operating. The number of people actively involved, at one particular time, in ball milling, sluicing and amalgamation is probably no more than 300.
07 May 2010 | report | project: 1223   GMP Final Report Sudan 2007
Artisanal and small-scale gold mining (ASM) is a poverty-driven activity that provides an important source of livelihood for perhaps 10 – 15 million people, but is also one of the major global sources of mercury contamination. It is estimated that artisanal gold miners produce up to 800 tonnes of gold annually, but releasing as much as 800-1000 tonnes of mercury to the environment in the process. These activities are frequently accompanied by extensive environmental degradation and deplorable socio-economic conditions.

 

 

 

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