In carrying out The First Class Coal Mining Operation and Trade, PT. ASJ affiliates with several Mine Owners as follows :
| COAL FROM SOUTH KALIMANTAN HIGH CALORIFIC VALUE (GAR OVER 5800 Kkal/kg) |
| 1. IUP OP PT. ENERGI BUMI JAYA MANDIRI (EBJM) |
| 2. IUP OP PT. SUMBER ARUM ENERGI (SAE) |
| MEDIUM CALORIFIC VALUE (GAR 5000 – 5800 Kkal/kg) |
| 1. IUP OP PT. ENERGI BUMI TAPIN (EBT) |
| 2. IUP OP PT. ALFA RIUNG JAYA (ARJ) |
| LOW CALORIFIC VALUE (GAR 3200 – 4800 Kkal/kg) |
| 1. IUP OP CV AKBAR |
| 2. IUP OP CV INDOMARTA MULTI MINING (IMM) |
| COAL FROM EAST KALIMANTAN |
| 1. IUP OP KOPERASI PERTANIAN AMANAH BERSAMA KOPTAN |
| 2. IUP OP KOPERASI PUTRA MAHAKAM MANDIRI (PUMMA) |
| 3. IUP OP KOPERASI PERTAMBANGAN MUPAKAT TAKA |
| COAL FROM SUMATERA |
| 1. IUP OP PT BUMI INDO POWER - JAMBI |
| 2. IUJP PT. ABDIKARYA NUSA SOLUSINDO |