A Framework for Ranking the Environmental Risk of Abandoned Mines in the State of Minas Gerais/Brazil

Abandoned mines are a major mining liability for the state of Minas Gerais, Brazil. The impacts and risks of abandoned mines are specific to the location and type of ore, but they cover social, economic, and cultural aspects. A central element of an abandoned mine management policy is the definition...

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Bibliographic Details
Published in:Sustainability 2021-12, Vol.13 (24), p.13874
Main Authors: Fernandes, Patrícia Rocha Maciel, Lima, Hernani Mota de
Format: Article
Language:English
Subjects:
Abandoned mines
Cultural factors
Decision making
Environmental effects
Environmental risk
Mines
Multiple criterion
Ranking
Risk
Risk assessment
Sustainability
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Summary:Abandoned mines are a major mining liability for the state of Minas Gerais, Brazil. The impacts and risks of abandoned mines are specific to the location and type of ore, but they cover social, economic, and cultural aspects. A central element of an abandoned mine management policy is the definition of a methodology to identify and rank characteristics of abandoned mines that pose a risk to the environment and society. This article presents a methodology for the ranking of environmental risks for abandoned mines in the state of Minas Gerais based on different evaluation factors of their external effects on the environment, safety, the population and surrounding areas, heritage and the landscape. The environmental risk of the abandoned mine area was generated to establish the “Abandoned Mine Area Environmental Risk Hierarchy”. To achieve this a multi-criteria analysis (using the Analytical Hierarchy Process (AHP)) was adopted with each preponderant factor being compared and measured. The results show that the use this framework can support in the decision-making process of an environmental agency for developing the intervention aimed at situations of greater gravity, which, ultimately, may require the use of public resources to reduce risks.
ISSN:2071-1050
2071-1050
DOI:10.3390/su132413874