Maydin Sipayung holds a degree in Mining Metallurgical Engineer from the Bandung Institute of Technology, ITB (1986) and Master of Business Administration from School of Business and Management ITB (2002) as well as Master of Energy Economics from Faculty of Economics, University of Indonesia (2007) and Doctor of Business Management from the Graduate School of Business of Bogor Agricultural University (IPB) in Bogor (2012).
He began his carrier in 1987 as the Junior Researcher in the Mining Metallurgy Research Centre Operation Department of Freeport Indonesia, Papua. In 1989 he moved to Astra Group as Department Head of Production Planning & Control and in 1990 promoted to Marketing Manager. In 1993 he moved to PT Tambang Batubara Bukit Asam Tbk (Persero) as Staff of Technical Director and in 1994 promoted to Marketing Development Manager for Coal Briquette Development Project until 2001. Before he resigned voluntarily from PT Bukit Asam Tbk in 2004, the last position was Senior Staff Marketing.
Since February 2006 until present, he is the Managing Director of PT Coalindo Energy and become the Managing Director/CEO of PT Coalindo Energy since July 2011, then become the President Director/CEO of PT Coalindo Energy since June 2018 until present, a joint venture company with Argus Media Limited (London) for developing Indonesia Coal Index (ICI).
Dadi Sukarso Yuwono, an Indonesian citizen, has worked for the Astra Group for about 30 years. Has a long journey of occupation in PT Pamapersada Nusantara, he started his career in business development department at PT Pamapersada Nusantara in 1990 and became the Business Development Director since 2009. He joined the various coal mining companies as a director and commissioner since 2012 until present and assigned to the sub-holding unit of the coal mining assets of the Astra Group, PT Tuah Turangga Agung in 2019. He then joined PT PT Coalindo Energy as a Director since July 2019.
He graduated from University of Gajah Mada in 1989 majoring in civil engineering.