ECONOMIC STUDY OF THE REDISTURB PLAN FOR THE BRAZIL DUMP PIT BENDILI PRIMA DEPARTMENT BINTANG PT KALTIM PRIMA COAL

Abstract

This study is based on the objective of optimizing operational cost efficiency and reducing hauling distances compared to the currently used J Void Dump location. The research aims to evaluate the economic feasibility of the redisturbance plan (reuse) of the Brazil Dump area as an alternative dumping point for overburden material at PT Kaltim Prima Coal (KPC). The methodology includes an analysis of the geometric design of Brazil Dump, calculation of the rehabilitated area affected by the redisturbance, and an evaluation of operational costs and the economic benefit of redisturbing the site. The results show that Brazil Dump is technically capable of accommodating approximately 13.4 million BCM of overburden with a tiered design ranging from elevation +50 to +150. However, the redisturbance process would affect 82.26 hectares of previously reclaimed land, with a total economic value of approximately USD 12.23 million. Despite an operational cost efficiency of USD 7.7 million, the analysis of economic benefit reveals a deficit of USD 4.53 million, indicating that from a direct cost-benefit perspective, the redisturbance plan does not provide a net economic gain when compared to the value of disturbed reclamation. Recommendations for future research include identifying alternative dumping sites that are closer to the active pit, minimizing the extent of redisturbance, and carefully considering reclamation costs and the economic value of impacted land.