Starting Company PT. Citra Maha Nusa established in 1991.
- CMN worked in various Coal mines around Indonesia from 1991 - 2000 with management mostly by expatriates. Through these years CMN has proven itself as being a top quality contractor in the local mining industry.
- CMN started its quarry business as the first and only quarry in Kalimantan providing raw materials to built most of the province's infrastructure and road maintenance for mines in the area.
- PT. Metraco Jaya was established in 2006 under the same CMN management and owner specializing in the coal industry. Using ties formed since 1991, the company is able to become the trusted selling agent for various mines in East Kalimantan. Currently, PT. Metraco Jaya is supplying coal to local companies who are using coal boilers and generators to reduce their production costs, with intentions to transact internationally in the near future.