PT MNC Energy Investments Tbk IATA KPP Mining 1st Digging Ceremony PT Arthaco Prima Energy (APE) Grup Astra PT United Tractors Tbk United Tractors UNTR PT Kalimantan Prima Persada kontraktor pertambangan Mining Contractor Agreement operasional pertambangan Izin usaha Pertambangan Operasi Produksi (IUP-OP)