Technical Evaluation of Landslide Risk and Environmental Contamination Due to Manganese Mining Activities at PT Ngali Sumbawa Mining
Keywords:
Manganese, Mining, Slope, EnvironmentalAbstract
Manganese mining activities conducted by PT Ngali Sumbawa Mining, a national private company holding a Mining Business License (IUP) since 2011 and located in Lape Village, Lape District, West Nusa Tenggara, have the potential to generate environmental impacts, particularly related to slope stability and surface water quality in the surrounding mining area. Therefore, this study aimed to assess the potential environmental hazards associated with manganese mining activities. The evaluation of landslide susceptibility toward Ngali Hamlet and the potential for water pollution was undertaken as a preliminary effort to ensure that mining operations are implemented in accordance with sustainable mining principles. This study employed a descriptive quantitative approach through literature review, field observations, and laboratory analyses. The findings indicate that the slope conditions within the mining area of PT Ngali Sumbawa Mining are generally stable, suggesting a low potential for landslides. In addition, the water quality in areas affected by mining activities remained within the environmental quality standards established by the government.
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