PT Delta Dunia Makmur Tbk is a holding company, which operates through its subsidiary, PT Bukit Makmur Mandiri Utama (BUMA), which is a coal-mining contractor in Indonesia. It operates in coal mining, mining services and investment segment. The Companyâs line of business includes services, mining, trading, development, and/or construction. Its business has been focused on coal mining contractor services. BUMA carries out work ranging from overburden removal, coal mining, coal hauling, as well as reclamation, and land rehabilitation. It has a total of 10 mining sites spread across Kalimantan. BUMA has two representative offices located in Balikpapan, South Kalimantan and Tanjung Redeb, East Kalimantan. Its operational areas of BUMA Indonesia include Berau Coal-Lati, Berau Coal-Binungan, Bayan-Indonesia Pratama (IPR), Adaro-Paringin, Adaro-Tutupan, Geo Energy-Sungai Danau Jaya (SDJ), Geo Energy-Tanah Bumbu Resources (TBR), Angsana Jaya Energi (AJE), and Tadjahan Antang Mineral (TAM).
PT DELTA DUNIA MAKMUR TBK 
