Djoko Pranoto Santoso

Part of Jardine Matheson Holdings Ltd., UT Heavy Industry (S) Pte Ltd. provides investment services. The company is based in Singapore, Singapore.

PT United Tractors Semen Gresik provides limestone mining services. The company is based in Tuban, Indonesia. The Indonesian company is ultimately controlled by the Government of Indonesia.

PT Komatsu Indonesia Tbk manufactures construction and mining equipment. Its products include hydraulic excavators, bulldozers, motor graders, off-highway dump trucks and steel cast products. The company was founded in 1982 and is headquartered in Jakarta Utara, Indonesia.

PT Pamapersada Nusantara (PAMA) is well established as Indonesia's leading mining operations throughout archipelago since 1993. The firm actively manages numerous coal mines, gold, quarry rocks etc. and undertakes dam construction and road works as well other earth excavation and transportation projects. The company will continues to draw upon the advantage of its world-class, deep industry expertise coupled with unified approach on providing professional and value added services to remain its position at the forefront of the industry. In true PAMA culture, improvements, achievements and advances are progressive and responsive to evolving development on all fronts. It sees the change coming, then move early and fast to adapt to the changing business needs and economic development. Also, it conducts studies and learns more about how its business partners grow. PAMA is an active corporate citizen. As a professional mining company, it is deeply aware of the long-term, fundamental and corporate benefits as well as its concern with safe and healthy workforce. The company also demonstrates commitment through continuing enhancements to minimize PAMA's impact on the environment that mining and civil engineering will engender. PAMA supports communities where it does business through corporate donations which allocated for education, religious building and roads construction as well as medical service supports.

PT Tuah Turangga Agung provides coal mining materials. The company is headquartered in Jakarta, Indonesia.