Pt Prosperity Coal Mining
Prosperity Tower Level 37, District 8 SCBD Lot. 28 Jl. Jend. Sudirman Kav. 5253 Jakarta 12190. Coal Mining Companies. Who We Are Mandiri Coal. PT Mandiri Intiperkasa, a coal mining company, was established in 1989. 1994. In 1994, PT Mandiri Intiperkasa obtained a coal mining license for an area of 50,000 Ha in North Kalimantan.