Search Results - "Marcello Veiga"

An estimation of the artisanal small-scale production of gold in the world by Seccatore, Jacopo, Veiga, Marcello, Origliasso, Chiara, Marin, Tatiane, De Tomi, Giorgio

“…The increase in gold price of over 400% between 2002 and 2012, due to a shift towards safe investments in a period of crisis in the global economy, created a…”
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Processing centres in artisanal gold mining by Veiga, Marcello M., Angeloci, Gustavo, Hitch, Michael, Colon Velasquez-Lopez, Patricio

“…The aim of this paper is to reflect on efforts made worldwide to construct processing centres where artisanal miners can visit to have gold extracted from ore…”
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Training artisanal miners: A proposed framework with performance evaluation indicators by Stocklin-Weinberg, Ruby, Veiga, Marcello M., Marshall, Bruce G.

“…Worldwide, approximately 30 million people depend directly on artisanal mining of many different minerals to provide for themselves and their families…”
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Mercury contamination from artisanal gold mining in Antioquia, Colombia: The world's highest per capita mercury pollution by Cordy, Paul, Veiga, Marcello M., Salih, Ibrahim, Al-Saadi, Sari, Console, Stephanie, Garcia, Oseas, Mesa, Luis Alberto, Velásquez-López, Patricio C., Roeser, Monika

“…The artisanal gold mining sector in Colombia has 200,000 miners officially producing 30 tonnes Au/a. In the Northeast of the Department of Antioquia, there are…”
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Coexistence between conventional alluvial mining and artisanal mining to deal with problems associated with informality in the lower Nechí River Basin-Colombia by Tarra, Jorge A., Restrepo, Oscar J., Veiga, Marcello M.

“…•Coexistence between artisanal gold mining (AGM) and conventional mining is a way to solve problems generated by AGM.•AGM needs exploitation rights, supervised…”
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Phasing Out Mercury? Ecological Economics and Indonesia's Small-Scale Gold Mining Sector by Spiegel, Samuel J., Agrawal, Sumali, Mikha, Dino, Vitamerry, Kartie, Le Billon, Philippe, Veiga, Marcello, Konolius, Kulansi, Paul, Bardolf

“…This article uses an ecological economics approach to analyse tensions surrounding efforts to phase out mercury in Indonesia's artisanal and small-scale gold…”
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Artisanal gold mining in Antioquia, Colombia: a successful case of mercury reduction by García, Oseas, Veiga, Marcello M., Cordy, Paul, Suescún, Osvaldo E., Molina, Jorge Martin, Roeser, Monika

“…Five municipalities in Antioquia, Colombia, with population of 162,000 inhabitants, were the world's largest mercury polluter from artisanal gold mining in…”
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Estimation of Mercury Losses and Gold Production by Artisanal and Small-Scale Gold Mining (ASGM) by Yoshimura, Akihiro, Suemasu, Koyo, Veiga, Marcello M.

“…Artisanal and small-scale gold mining (ASGM) utilizes mercury (Hg) for the extraction of gold (Au) and is responsible for the largest anthropogenic source of…”
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Reducing mercury pollution by training Peruvian artisanal gold miners by Veiga, Marcello M., Angeloci, Gustavo, Ñiquen, Wilmer, Seccatore, Jacopo

“…In 2010, in the Piura region, north of Peru, 10,000 artisanal miners and more that 160 processing plants were dispersed in 158,000 ha applying extremely…”
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Gold losses and mercury recovery in artisanal gold mining on the Madeira River, Brazil by Balzino, Michela, Seccatore, Jacopo, Marin, Tatiane, De Tomi, Giorgio, Veiga, Marcello M.

“…For the last 40 years artisanal mining has been playing a key role in the economy of the Madeira River, State of Rondônia, in the Brazilian Amazon. The main…”
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Artisanal and small-scale mining as an extralegal economy: De Soto and the redefinition of “formalization” by Siegel, Shefa, Veiga, Marcello M.

“…This paper addresses the role of formalization in artisanal and small-scale mining (ASM) in sub-Saharan Africa, focusing specifically on Uganda. Most ASM…”
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Evidence of reduced mercury loss and increased use of cyanidation at gold processing centers in southern Ecuador by Gonçalves, Adriana O., Marshall, Bruce G., Kaplan, Robert J., Moreno-Chavez, Jose, Veiga, Marcello M.

“…Due to the strong price of gold, the number and capacity of gold processing centers in Portovelo-Zaruma in southern Ecuador have increased considerably in…”
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An investigation of mercury sources in the Puyango-Tumbes River: Using stable Hg isotopes to characterize transboundary Hg pollution by Schudel, Gary, Miserendino, Rebecca Adler, Veiga, Marcello M., Velasquez-López, P. Colon, Lees, Peter S.J., Winland-Gaetz, Sean, Davée Guimarães, Jean Remy, Bergquist, Bridget A.

“…Mercury (Hg) concentrations and stable isotopes along with other trace metals were examined in environmental samples from Ecuador and Peru's shared…”
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An affordable solution for micro-miners in Colombia to process gold ores without mercury by Veiga, Marcello M., Masson, Pierre, Perron, Denis, Laflamme, Annie-Claude, Gagnon, Robert, Jimenez, Gabriel, Marshall, Bruce G.

“…Simple and affordable pieces of equipment to concentrate gold were developed by the Colleges and Institutes Canada (CICAN) Project in Colombia using locally…”
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Assessment of mine ventilation systems and air pollution impacts on artisanal tanzanite miners at Merelani, Tanzania by Mayala, Laurent Paul, Veiga, Marcello M., Khorzoughi, Mohammad Babaei

“…This article assesses mine ventilation systems and air pollution impacts on 4000 artisanal tanzanite miners at Merelani. Concentration of carbon monoxide (CO)…”
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Experimenting with Dimethyl Sulfoxide to Leach Gold from a Colombian Artisanal Gold Ore by Torkaman, Pariya, Yoshimura, Akihiro, Lavkulich, Leslie M, Veiga, Marcello M

“…The diverse uses of gold and its crucial role in the global economy are growing, particularly during cycles of economic crises. The broad use of cyanide by…”
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Mercury isotopic signatures of tailings from artisanal and small-scale gold mining (ASGM) in southwestern Ecuador by Schudel, Gary, Kaplan, Robert, Adler Miserendino, Rebecca, Veiga, Marcello M., Velasquez-López, P. Colon, Guimarães, Jean Remy Davée, Bergquist, Bridget A.

“…Artisanal and small-scale gold mining (ASGM) is currently one of the largest anthropogenic sources of mercury (Hg) to the atmosphere and a significant source…”
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Reaction of Cyanide with Hg 0 -Contaminated Gold Mining Tailings Produces Soluble Mercuric Cyanide Complexes by Seney, Caryn S, Bridges, Christy C, Aljic, Sumeja, Moore, Matthew E, Orr, Sarah E, Barnes, Mary C, Joshee, Lucy, Uchakina, Olga N, Bellott, Brian J, McKallip, Robert J, Drace, Kevin, Veiga, Marcello M, Kiefer, Adam M

“…Elemental mercury (Hg ) contamination in artisanal and small-scale gold mining (ASGM) communities is widespread, and Hg -contaminated tailings are often…”
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Acute ecotoxicological effects of Hg(CN)2 in Danio rerio (zebrafish) by da Silva, Henrique Alencar Meira, Kasper, Daniele, Marshall, Bruce G., Veiga, Marcello M., Guimaraes, Jean Remy Davée

“…Artisanal and small-scale gold mining (ASGM) is the largest source of anthropogenic Hg emissions on the planet. In addition, Hg-contaminated tailings are often…”
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Using street theatre to increase awareness of and reduce mercury pollution in the artisanal gold mining sector: a case from Zimbabwe by Metcalf, Stephen M., Veiga, Marcello M.

“…An illustrative example of street theatre used in international development as an awareness-building tool is Nakai, a drama produced by the United Nation's…”
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