A simplified matrix of environmental impacts to support an intervention program in a small-scale mining site

Abstract This paper describes a tool developed to evaluate environmental risks at a Brazilian artisanal small-scale gold mining site. The tool consists of a matrix used to determine the relevance of such risks through the classification of mining activities according to the likelihood that they may cause environmental impacts. The language and method are very simple, and thus appropriate for local stakeholders. It ensures their participation when developing a plan of action for intervention and training. When applied to a pilot site in the Brazilian Amazon, the matrix revealed the variables that pose higher environmental risks. These activities were subsequently addressed in a training program to promote better practices. As a result, the mining activities were improved by 28.8% when comparing compliance to environmental requisites before and after the training program. Specifically, the training program resulted in improved gold recovery, and reduced environmental and health impacts.

[1]  M. Veiga,et al.  Implementing programs to improve gold recovery and reduce environmental impacts by artisanal gold mining in Brazil , 2007 .

[2]  Rickford Vieira.  Mercury-free gold mining technologies: possibilities for adoption in the Guianas , 2006 .

[3]  D. Nyange,et al.  “The ladder that sends us to wealth”: Artisanal mining and poverty reduction in Tanzania , 2009 .

[4]  L. B. Leopold,et al.  A procedure for evaluating environmental impact , 1971 .

[5]  Jiddu Krishnamurti,et al.  Education and the Significance of Life , 1953 .

[6]  Rodolfo N. Sousa,et al.  Strategies for reducing the environmental impact of reprocessing mercury-contaminated tailings in the artisanal and small-scale gold mining sector: insights from Tapajos River Basin, Brazil , 2010 .

[7]  Glenn W. Suter,et al.  Ecological risk assessment , 2006 .

[8]  Chris Barrow,et al.  Environmental management : principles and practice , 1999 .

[9]  John Glasson,et al.  Introduction to Environmental Impact Assessment , 1999 .

[10]  Gavin Hilson,et al.  Strengthening artisanal mining research and policy through baseline census activities , 2005 .

[11]  Marcello M. Veiga,et al.  Protocols for Environmental and Health Assessment of Mercury Released by Artisanal and Small-Scale Gold Miners , 2004 .

[12]  M. Veiga,et al.  Using Performance Indicators to Evaluate an Environmental Education Program in Artisanal Gold Mining Communities in the Brazilian Amazon , 2009, Ambio.

[13]  Gavin Hilson,et al.  Abatement of mercury pollution in the small-scale gold mining industry: restructuring the policy and research agendas. , 2006, The Science of the total environment.

[14]  Gavin Hilson,et al.  ‘Once a miner, always a miner’: Poverty and livelihood diversification in Akwatia, Ghana , 2010 .

[15]  Miley W. Merkhofer,et al.  Risk Assessment Methods: Approaches for Assessing Health and Environmental Risks , 1993 .

[16]  Marcello M. Veiga,et al.  Abandoned artisanal gold mines in the Brazilian Amazon: A legacy of mercury pollution , 2002 .

[17]  Lotfi A. Zadeh,et al.  Fuzzy Sets , 1996, Inf. Control..

[18]  Gavin Hilson,et al.  Child labour in African Artisanal Mining Communities: experiences from Northern Ghana , 2010 .

[19]  Gavin Hilson,et al.  De-agrarianization, re-agrarianization and local economic development: Re-orientating livelihoods in African artisanal mining communities , 2010 .

[20]  Marcello M. Veiga,et al.  Clean artisanal gold mining: a utopian approach? , 2003 .

[21]  Rebecca A. Efroymson,et al.  Ecological Risk Assessment for Contaminated Sites , 2000 .

[22]  M. Claassen,et al.  An interpretation and evaluation of the US Environmental Protection Agency ecological risk assessment guidelines , 1999 .

[23]  Riki Therivel,et al.  Methods of Environmental Impact Assessment , 2002 .

[24]  Marcello M. Veiga,et al.  HgEx — A Heuristic System on Mercury Pollution in the Amazon , 1995 .

[25]  R Fairman,et al.  Environmental Risk Assessment: Approaches, Experiences and Information Sources , 1998 .