Mineral resources are fundamental to the country's economy and these are exploited by mining. Why is mining considered an environmental hazard? Explain the remedial measures required to reduce the environmental hazard due to mining.
Mining is fundamental to a country's economy, yet it is considered a major environmental hazard due to its profound and often irreversible impacts on ecosystems. It leads to large-scale deforestation and habitat destruction, resulting in a significant loss of biodiversity. The process causes severe land degradation, leaving behind vast tracts of infertile land and altering the landscape permanently. Mining activities are a major source of pollution; they release dust and harmful particulate matter into the air, while the runoff and leaching of toxic chemicals and heavy metals from mine waste (tailings) contaminate surface and groundwater sources, posing risks to human and aquatic life. Open-cast mining, in particular, generates enormous amounts of waste rock and overburden, which require careful disposal. Furthermore, mining can alter hydrological patterns and lead to soil erosion.
Remedial measures are essential to reduce these hazards. A primary step is the implementation of a comprehensive Environmental Management Plan (EMP) even before mining begins. Progressive mine reclamation, where the mined-out areas are simultaneously restored and revegetated, is a crucial practice to minimize land degradation. Afforestation programs in and around the mining area can help restore biodiversity and control soil erosion. To control water pollution, tailing dams must be properly constructed and managed, and effluent treatment plants should be installed to treat wastewater before discharge. For air pollution, measures like water sprinkling on haul roads and using covered conveyors can suppress dust. Adopting modern, sustainable mining technologies that minimize waste and resource consumption is also a key remedial strategy for long-term environmental protection.
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Important Questions from GS3
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What were the factors responsible for the successful implementation of land reforms in some parts of the country? Elaborate.
