BUMA Mine Sites
BUMA’s operations are located in Central, East and South Kalimantan where the majority of Indonesian coal reserves are located. BUMA operates under long-term mining contracts with coal mine owners for periods ranging from three to 10 years.
Our customers include some of Indonesia’s largest coal producers, such as PT Berau Coal, PT Adaro Indonesia, PT Kideco Jaya Agung, PT Arutmin Indonesia and certain subsidiaries of PT Bayan Resources. Our reputation, performance and track record have enabled us to enjoy longstanding relationship with our existing customers and to secure new customers.
To date, none of our customers has refused to extend any of our operating agreements on their expiry, nor have they exercised early termination rights with respect to any of our operating agreements for any reason.
Overview of BUMA's Mining Contracting Operations

| No | Customer | Type of Job | Period | ||
| 1 | Adaro | Coal mining | 2009 - 2013 | ||
| 2 | Adaro | Coal hauling | 2009 - 2013 | ||
| 3 | Kideco (Extension) | Coal mining | 2004 - 2019 |
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| 4 | Berau Coal (Lati) | Coal mining | 1998 - 2018 |
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| 5 | Berau Coal (East Lati) | Coal mining |
2011 - 2016 |
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| 6 | Berau Coal (Suaran) | Coal hauling |
2003 - 2018 |
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| 7 | Berau Coal (Binungan) | Coal mining | 2003 - 2018 |
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| 8 | Darma Henwa (KPC) | Coal mining | 2010 - 2013 |
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| 9 | Marunda Graha Mineral | Coal mining | 2003 - 2012 |
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| 10 | Lanna Harita Indonesia | Coal mining | 2001 - 2013 |
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| 11 | Bukit Baiduri Energi (Merandai) | Coal mining | 2001 - 2011 |
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| 12 | Bayan - PIK | Coal mining |
2007 - 2012 |
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| 13 | Bayan - GBP | Overburden removal |
2007 - 2013 |
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| 14 | Arutmin (Senakin Pit 1) | Coal mining | 2008 - 2011 |
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| 15 | Arutmin (Senakin Pits 4-7) | Coal mining | 2010 - 2014 | ||
