Abstract
Abstract. PT. Batu Nago Mandiri is a company that will plan andesite miningin Batang Kapas districts, Pesisir
Selatan regency, province of West Sumatera. PT. Batu Nago Mandiri has a 52ha IUP area and has 23,750,000 tons
ofandesite reserves and a mine life of 20 years. Parameter of organizing this research activity is seen in terms of the
economy, estimation of tool needs and outcome sale of andesite stone. Therefore needed investment analysis and the
economic feasibility of the mine to see the prospect of the andesite reserve whether it has economic value in that location.
Then, the parameters used to determine economic viability in andesite production of PT. Batu Nago Mandiri is a Net
Present Value (NPV), Internal Rate Return (IRR), Payback Period (PBP).Based on the results of the economic analysis
assessment, the Net Present Value valueis Rp. 1,632,077,494,690, 16% Internal Rate Return and 8-year Payback Period,
the project is feasible to run. Estimated equipment requirements for Ore Getting requires 1 unit of Komatsu PC 400-LC8
Excavator and 4 units of Hino 30T Dump Truck, while for Overburden Removal requires 1 unit of Komatsu PC300-8 MO
Excavator and 3 units of Hino 30T Dump Truck. The income from the sale of andesite stones was Rp. 1,067,5000,000
Keywords: Technical Economics, NPV, IRR, PBP, Estimated Equipment Requirement