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Mining and Sustainability in the ACP countries: the environmental and social challenges. Håkan Tarras-Wahlberg Swedish Geological AB 13 December 2010. This is not exactly new….: Agricola, 1556 ( De Re Metallica). - PowerPoint PPT Presentation
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Mining and Sustainability in the ACP countries: the environmental and social challenges
Håkan Tarras-Wahlberg
Swedish Geological AB
13 December 2010
“when the ores are washed, the water that has been used poisons the brooks and streams, and either destroys the fish or drives them away”
“if we remove metals from the service of man, all methods of protecting and sustaining health and more carefully preserving the course of life are done away with”
(transl. Hoover and Hoover )
This is not exactly new….: Agricola, 1556 (De Re Metallica)
• Environmental impacts and prevention• Socio-economic impacts and prevention• Planning for closure• Small-scale and artisanal mining• The way forward - suggestions
Disposition of presentation
Environmental impacts: Destruction of natural habitat
e.g. Copperbelt, Zambia:~0.3 % of area covered by
mines & waste
e.g. Marine diamonds, South Africa & Namibia
Environmental impacts: Solid waste and contaminants
Copperbelt, Zambia:Env. liabilities or resources? Copperbelt, Zambia:
Cobalt laden stream
No industry produces more waste....
Environmental impacts: Tailings dam failures
Merriesspruit, South Africa
Small scale mining – also contributes to dam failures
1-2 major cases per year....
Environmental impacts: Acid Rock Drainage
e.g. Pueblo Viejo, Rep. Dominicana
low pH, high conc. of dissolved metals
Among the most troublesome issues...
Environmental impacts: Surface water pollution
Cyanide Hg
Metals, process chemicals and turbidity...
Environmental impacts: Soil & air pollution
Dust, metals, gases......
e.g. Kabwe, Zambia
Environmental impacts: Land subscidence & blasting
Coal strip mining, S. Africa
Cracked house, Mufulira, Zambia
Environmental impacts: Erosion, landscape disruption & radioactivity
Coastal diamonds,South Africa
Yellow cake
Open pit gold mining, Ghana
Environmental impacts: General industrial issues
Metal scrap, hydraulic oils, hydro carbons etc...
Environmental monitoring & control
Desk top work, field work, laboratory work, followed by analysis... What are the impacts?
Socio-economic impacts: Mining Communities
Mining companies now rarely take on all societal needs of a mining community, the transition is difficult: e.g. experiences in Zambia & Zimbabwe
Socio-economic impacts: Consultation & Disclosure
The need to provide affected parties with adequate and prior information, enabling them to participate in planning is accepted best practice...
Socio-economic impacts: Distribution of impacts & benefits
0
50
100
150
200
250
300
350
400
450
1995 2000 2001 2002 2003 2004 2005 2006 2007
Billion USD
Mines are often important to the national economy – what about the local level?
Socio-economic impacts: Land use conflict
Globally, legal systems differ but usually, surface rights and rights to minerals are seperated. This leads to misunderstandings and conflicts...
Socio-economic monitoring & control
Desk top work and field surveys, followed by analysis... What are the impacts?
Artisanal and small scale miners:
e.g. Salt mining in Ghana
e.g. Alluvial gold mining in Papua New Guinea
Most agree that ASM is poverty driven...
• Illegal• Dangerous• Env. & social
impacts• Hinders investment
& development• Destroys ore
deposits• Short-sighted /
jackpot mentality
• Morally “right”• Important livelihood
for many• Engine for
development & biz development
• Utilises resources that cannot otherwise be mined
Perceptions of “ASM” differ:
Planning for Closure:
e.g. Madagascar
e.g. Ghana
Needs to start allready at planning stage & funds should be set aside..
Way Forward: Strong & competent institutions
Building & strengthening institutions is a never ending task..
Way Forward: Clear/transparent allocation of rights to explore & mine
The very first step in the process, it must be transparent and fair..
Way Forward: Promote responsible investments
e.g. KCCL in Uganda - Cobalt extraction from waste, leading to a major environmental clean up: ”win-win”
Way Forward: Development of domestic expertise & companies
e.g. In PNG, the Wau small scale mining school trains new entrepreneurs in gold mining
e.g. In Ghana, local expertise in rehabilitation and revegetation contribute to more succeful mine closures
Way Forward: Improved public knowledge and participation
e.g. In Kabwe, Zambia, efforts to improve awareness and nutritional status among local communities have proven to be more effective and cost-effective than physical measures of remediation