PT Mitra Stania Prima (MSP) is the 3rd largest tin mining company in Indonesia. MSP has a mining concession in Mapur which is one of the largest onshore tin mines still actively operating in Indonesia. Since 2013, MSP has been actively mining in Mapur with a land area of 233.5 hectares with a mining potential of 7,551 tonnes of tin (Sn), in accordance with the RKAB Approval of the PT Mitra Stania Prima Production Operation Mining Business License for 2024 to 2026.

MSP owns and operates a tin processing and refining facility. MSP’s tin smelting equipment includes two electric furnaces with a capacity of 3,811 tons in 2024, utilizing green energy from the state-owned electricity company (PLN) and solar panels. MSP-branded tin ingots are registered on the London Metal Exchange (LME). MSP’s current tin metal export revenue is approximately 3,300 tons, and the company has been awarded the GREEN PROPER certification.