Perencanaan Konseptual Tambang Bijih Nikel Blok Utara PT Pacific Ore Resources, Kabupaten Bombana, Provinsi Sulawesi Tenggara = Conceptual Planning of North Block Nickel Ore Mine PT Pacific Ore Resources, Bombana Regency, Southeast Sulawesi Province

PT Pacific Ore Resources is a nickel laterite mining company located in North Kabaena, Bombana Regency, Southeast Sulawesi Province. The company has divided the work area into two blocks, namely the South Block which is the focus of the production process, and the North Block which is still in the exploration and mining planning stages. This study aims to make a conceptual mine planning in the North Block to determine optimal mining boundaries, pit design, production scheduling, cash flow, and sensitivity analysis. Research using quantitative methods. Data processing is assisted by Micromine v.2021.5 and Microsoft Excel software. The reporting results of laterite nickel ore resources are 262,996 tons. The optimal pit limit is in pit shell 6 with an NPV of USD 961,991. The results of the evaluation of ore reserves in the pit design were 216,771 tons with an overburden of 683,255 BCM so a waste dump design was carried out that could accommodate up to 685,763 BCM of waste material. The mine haul road design results include new roads and existing roads which have a road length of 687.31 meters respectively 5315.42 meters. The ore reserves based on sequence design sequentially from sequence 1 to 6 are 23,237, 43,007, 41,249, 42,173, 42,891, and 27,777 tons, while the overburden layer is 129,279, 100,781, 119,065, 117,674, 113,629 and 100,053 BCM. The digging-loading equipment assignment from sequences 1 to 6 is 3 units each, while the hauling equipment is 16, 21, 22, 22, 22, and 16 units. The cash flow analysis results showed an NPV value of USD 1,050,838.64, an IRR of 37.94%, and a PBP of 70 days. The sensitivity analysis results show that changes in nickel prices affect the NPV the most compared to changes in operating and capital costs.

Kata kunci : Perencanaan Tambang, Nikel Laterit, Analisis Investasi