Transformation
Amman Mineral Nusa Tenggara
We transformed Batu Hijau by digging into the details. Understanding that a series of small improvements in individual areas can add up to operational excellence across the whole mine. We thought about how we could maximize the use of our machinery, how we could incentivize and empower our workforce, and how we could make our production process more efficient, sustainable and resilient. The result is a mine that can give back to the people surrounding it, for decades to come.
Overview
At a glance
We commenced production and operations in 2000, and as of 2020, we have produced approximately
Billion Pounds Of Copper
Million Ounces Of Gold
We have a long-term expected mine life, followed by processing stockpiles. We are also driven to continue our operations by developing the significant potential of the Elang deposit, which forms part of our ongoing assessment.
Our world-class facilities feature a large fleet of mining equipment, a processing plant with 120,000 tonnes capacity per day, a 137-megawatt steam-powered electricity plant, a port with a ferry terminal, air services and an established town site.
Our Leaders
Board of commissioners
President Commissioner
Hilmi Panigoro
President Commissioner
Hilmi Panigoro
Hilmi Panigoro is a prominent Indonesian business figure who has been with Medco Group — a significant shareholder of AMMAN — since 1997. Hilmi was the Vice-President of MedcoEnergi, from 1997 to 2001 and has since held various positions within the company. He currently serves as a member of the Risk Management Committee, as well as Director and Commissioner of several entities within the MedcoEnergi group of companies. Graduated in geological engineering from Institut Teknologi Bandung, he was later awarded master’s degrees from both Thunderbird School of Global Management at Arizona State University and Colorado School of Mines.
Commissioner
Andy Hadianto
Commissioner
Andy Hadianto
Andy Hadianto has held various positions in the public sector, including the Head of Legal of Nusa Tenggara Barat (NTB) Regional Secretary Office and the Head of the Youth and Sports Division of the Youth and Sports Affairs Agency of NTB. His extensive experience in leading various government institutions within NTB Provincial Government has led Andi to become the President Director of PT Daerah Maju Bersaing, a regional-government-owned enterprise representing NTB in the ownership of PT Newmont Nusa Tenggara, and the Commissioner of PT Multi Daerah Bersaing. Andi holds a master’s degree in law and management and has completed non-formal legal drafting education in Australia and Widya Iswara at the State Administration Institute.
Commissioner
Alexander Ramlie
Commissioner
Alexander Ramlie
Alexander Ramlie is currently the President Director and Chief Executive Officer (CEO) of PT Amman Mineral Internasional. He joined in 2015 as a member of the AMMAN founding team, where he played an instrumental role in the acquisition of PT Newmont Nusa Tenggara. He is concurrently a Non-Executive Director of Macmahon Holdings Ltd, an ASX-listed mining contractor. From 2011 to 2015, he was the President Director and CEO of IDX-listed PT Borneo Lumbung Energi & Metal Tbk. He also led the acquisition of a controlling stake in Bumi PLC by Borneo in 2011. Between 2012 and 2015, Alex was also a Director of LSE-listed Bumi PLC, a Vice-President Commissioner/Vice-Chairman of IDX-listed PT Berau Coal Energy Tbk and its subsidiary, PT Berau Coal. At the same time, he held commissioner positions at PT Bumi Resources Tbk, PT Kaltim Prima Coal, and PT Arutmin Indonesia. Alex began his career as an investment banker at Lazard Frères & Co and has a Bachelor of Arts and a Master of Arts in Economics from Boston University.
Commissioner
Arief Sidarto
Commissioner
Arief Sidarto
Arief Sidarto has extensive experience in the financial services and corporate sectors. Arief started his career with Goldman Sachs in New York in 1991 and eventually ran their investment banking business in Southeast Asia. He was also appointed as a member of the Commitments Committee, which vetted all investment banking transactions in Asia, excluding Japan. Prior to joining AMMAN, he was the Managing Director and Member of the Board of Rajawali Corpora, a diversified Indonesian business group with investments in palm oil plantation, gold and mining, luxury hotels and properties, transportation, infrastructure, as well as TV and media. During his time there, he played a prominent role in the Finance and Investment Committee, Ethics Committee, Audit & Risk Management Committee and Management Board. He graduated summa cum laude with dual degrees in finance and engineering from the University of Pennsylvania before completing his MBA at Harvard Business School.
Our Leaders
Board of directors
President Director
Rachmat Makkasau
President Director
Rachmat Makkasau
Rachmat Makkasau has worked in the mining industry for over 26 years and has a well-rounded knowledge of the business — from operations, leadership and human resources to business development. His experience in multiple project expansions enables him to bring stability and credibility to the smooth transition of ownership to PT Amman Mineral Nusa Tenggara (AMNT). He is an active member and advisor on several industry and mining associations, and he also obtained a bachelor’s degree in economics and a master’s degree in management from Bina Nusantara University.
Vice President Director
Agus Projosasmito
Vice President Director
Agus Projosasmito
Agus is a seasoned Indonesian investment banker with more than 30 years of experience in the industry. He started his career as the Head of Capital Markets at Danareksa (Persero) in 1982. His extensive career in the banking industry has brought him to sit at various executive positions including as the Vice President Director at DBS Securities Indonesia (1992 – 1995), Managing Director at Danareksa (1995-2001), President Director at PT Nusantara Mahabakti (20007 – present). Prior to joining AMMAN, Agus was the founding CEO of PT Ithaca Resources. He obtained his degree in Economics from Satya Wacana Christian University before completing his diploma in Economics of Development from the Australian National University.
Director
David Gibbs
Director
David Gibbs
David Gibbs is a mining engineer with nearly 40 years of continuous international mining experience in copper-gold, diamonds, uranium, coal (thermal and coking), talc, and nickel laterite with major companies. He has been involved in underground and open-pit mining, predominantly in South Africa, Namibia, Papua New Guinea, Australia, Thailand, and Indonesia. David has held positions in the management of feasibility studies, mine planning, operations, productivity improvement/cost reduction programs, due diligence studies, strategic planning, and project evaluations/developments. He holds a BSc Hons in mining engineering, a First Class Mine Manager’s Certificate (Western Australia), and a Mine Manager’s Certificate (South Africa), and he is an Associate of The Royal School of Mines (ARSM) and a Chartered Engineer (C Eng).
Director
Dr. Naveen Chandra Lal
Director
Dr. Naveen Chandra Lal
Dr. Naveen Chandra Lal has extensive global and executive experience for more than 26 years in mining operations, commercial and commodity trading, acquisitions, mergers, and strategic development. He has managed an extensive portfolio of commodities across multiple industries. Prior to joining AMMAN in 2016, Dr. Naveen worked as CEO of RAK Minerals and Metals Investments FZC, United Arab Emirates, from 2008 to 2012, and later became President Director of Trimex International Indonesia from 2012 to 2016. He holds a master’s degree in chemistry and a Ph.D. from Jadavpur University, India. He also has an Advanced Management Program degree from Harvard Business School.
Director
Aditya Sasmito
Director
Aditya Sasmito
Aditya Sasmito has more than 14 years of diversified experience, including a consultant and banker, covering a broad spectrum of industries (including mining, logistics, utilities, plantation, telco, manufacturing, and banking sectors). He has provided advice on business planning, business reviews, financial modeling, business valuation, market entry studies, due diligence, transactions, credit reviews, and banking relationship management. In 2017, Aditya joined AMMAN and gained significant experience within the mining industry, overseeing port/logistics, inventory, corporate communications, and supply chain management.
Director
Irwin Wan
Director
Irwin Wan
Irwin has worked in the global mining, civil earthworks, and engineering sectors, holding technical, operational, commercial, and managerial roles for two decades. He has been with AMMAN since 2016 and played a prominent role in the operational and cultural transformation for the new national ownership. Prior to joining AMMAN, Irwin held senior management positions at Leighton (now Thiess) Contractors. He was also the engineering advisor for HKND Group on the Nicaragua Grand Canal Project – at the time, the world’s largest proposed earthworks and infrastructure project. Prior to these roles, he was the Project Director and Head of Mining for ASX-listed Hunnu Coal Limited and SET-listed energy company Banpu, which owned and operated coking coal mines in Mongolia. He is a member of the Australasian Institute of Mining and Metallurgy and a qualified Competent Person for the reporting of JORC Code in the relevant field. Irwin holds double degrees with honors in engineering and triple majors in commerce (corporate finance, investment finance, and accounting) from the University of Western Australia.
Director
Thomas Ramlie
Director
Thomas Ramlie
Thomas has accumulated a diversified professional experience over the past 25 years. He started his career in structured finance in commodities trading at Cargill, followed by corporate financial advisory at Baring Brothers Limited, involved in mergers and acquisitions, IPOs, debt restructurings, and secondary placements. He then diversified into procurement for the Kering Group in France, one of the leading global luxury and retail groups, followed by management consulting. Thomas joined AMMAN in January 2017 and has been part of the management team that has led the company’s transformation since the transfer of ownership to AMNT. He oversees human capital management, transport, infrastructure and facilities management services, internal audit, as well as information technology. Thomas obtained his economics degree with honors from Tufts University.
