Mukson Arif Rosyidi
Corporate Secretary & Chief Corporate Services Officer

Indonesian citizen, born on February 2, 1976. Effective as Chief Corporate Services Officer on October 1st, 2017. He holds a degree in Petroleum Engineering from Bandung Institute of Technology in 1999, continuing his Post Graduate in Prasetya Mulya Business School with a concentration in Strategic Business Management in 2010. He  serves  as  Corporate  Secretary  and Investor  Relations  since  February  11, 2014.  He  previously  held  the  position  as Head  of  Business  Development  Division of  the  Company  in  2012-2015.  He developed  his  career  for  nearly  thirteen years in Bakrie Group and its subsidiaries engaged in various industries, such as pipe manufacturing,  components,  fabrication and construction, and building materials. His  career  development  started  in  early 2000  as  a  Management  Trainee  (MT)  in Sales,  Marketing,  and  Management  at PT Bakrie & Brothers Tbk and has gained educational  process  and  internship  in several subsidiaries, such as PT Bakrie Pipe Industries, PT Seamless Pipe Indonesia, PT Bakrie  Tosanjaya,  PT  Bakrie  Corrugated Metal  Industries,  PT  Ratelindo  and  PT South East Asia Pipe Industries. In 2001, he served as Sales & Commercial Engineer  at  PT  Seamless  Pipe  Indonesia Jaya  until  2002.  From  September  2002 until  2008,  he  worked  at  PT  Bakrie  & Brothers  Tbk  with  the  last  position  as Operations Manager. From 2009 to 2010, he  worked  at  PT  Bakrie  Metal  Industries with  the  last  position  as  Senior  Manager of Business Development and at PT Bakrie Tosanjaya as Chief Business Development Officer in early 2011.

Harry Satria Putra
Chief Business Development & Commercial Officer

Indonesian citizen, born on November 11, 1979. Effective as Chief Business Development & Commercial Officer on October 1st, 2017. He has experiences in mine operations, mine planning, new project development, project management, mine economic, valuation and contracts. Prior to current position he has various role in PTDH as Superintendent Short Term Mine Planning Bengalon (2006), Manager Business Engineering Analyst and Operation Control (2007), Manager Technical Service & Manager Mine Engineering Asam-Asam (2008), Head of Project Binungan  (2011), General Manager Mine Engineering & Development Division (2010-now) and Deputy COO (2013).He started his career experiences as Project Engineer at LAPI Consultant before he worked for reputable mining company as Mining Engineer for two years. In 2004-2006, he worked for well-known mining contractor with the latest role position as Engineering Section Head. Graduated from Institute Technology of Bandung in Mining Engineering, he is a member of Association of Indonesian Mining Professional (PERHAPI) and the Institution of Engineer Indonesia (PII). He is also a member of the Australasian Institute of Mining and Metallurgy (AusIMM). He is Certified Blaster Kelas 1 (2005), Certified Engineer on Open Pit Long Term Planning - NQF6 (2011), Certified Mining Operation Supervisor Utama (2010), Certified on Project Management (2011) as well as on Underground Space Engineering (2015).