Kutai Kartanegara · East Kalimantan
Powering progress from East Kalimantan
Two coal mining companies, one long-term vision. From pit to port to anchorage.
Discover Muliabara
- 779.81 Mt Total resources
- 460.0 Mt Total reserves
- 5.82 Mt Coal sales 2025 ▲ 41% YoY
- 20.0 Mt Production target 2029
- 3,300 – 3,500 GAR kcal/kg
- 27 Mt KBCT throughput capacity
- 329 Exploration drill holes
Our Business
One entity, a long-term vision
PT Indo Bara Pratama (IBP) and PT Rencana Mulia Baratama (RMB) are coal mining companies operating in Kutai Kartanegara Regency, East Kalimantan, Indonesia.
Both companies hold Mining Business Licenses (IUP) and other relevant permits, with a strong commitment to sustainable mining practices and responsible environmental management. Since 2024 they have operated together as Muliabara.
Our Vision
To be a world-class energy provider, driving sustainable development, fostering social and economic prosperity, and creating value for all stakeholders.
Our Mission
To achieve global recognition in natural resource development by adopting innovative technologies and enhancing operational excellence. We are committed to creating a harmonious environment for stakeholders by adopting eco-friendly and reliable energy solutions, prioritizing employee well-being, partnering with community, while delivering profitability.
Core Values
We STRIVE
1 / 6
Our Story
Milestones
2006
Exploration license
IBP obtained its Exploration Mining License.
Operations
From pit to anchorage
Our mine sits 225 km northwest of Samarinda. Coal moves by road to our river ports, by barge down the Belayan and Mahakam rivers, and on to the anchorage at Muara Jawa.
-
Mine site
Long Beleh Modang
Kembang Janggut, Kutai Kartanegara
- RMB → LMP
- 12 km
- IBP → LMP
- 20 km
-
River port
Long Mahli Port · LMP
Belayan River
- LMP → KBCT
- 178 km
-
River port · planned
Kembang Janggut Port · KJP
Belayan River
- RMB → KJP
- 31 km
- KJP → KBCT
- 126 km
-
Coal terminal
Kota Bangun · KBCT
Mahakam River, Bukit Jering, Muara Kaman
- KBCT → Anchorage
- 115 NM
-
Transshipment
Muara Jawa Anchorage
Muara Jawa / Muara Berau
- Distance
- 213 km
Administrative area
Gunung Sari (Tabang), Long Beleh Modang and Muai (Kembang Janggut), Kutai Kartanegara Regency
Accessibility
6–7 hours by road, or partly by river from Kota Bangun to the IBP/RMB jetty
Barge fleet
Small barge sets on the Belayan and big barge sets on the Mahakam, around 10 days per round trip
Mining
Multi-seam deposit with five major seams, dipping 5–10° and 4–10 m thick.
Resources & Reserves
A long-life resource base
Detailed exploration from 2012 to 2023 covered 329 holes of development, infill and geotechnical drilling.
779.81 MtTotal resources
460.0 MtTotal reserves
533.11 MtMeasured resources
399.0 MtProved reserves
| Million tonnes | RMB | IBP | Total |
|---|---|---|---|
| Measured | 301.12 | 231.99 | 533.11 |
| Indicated | 112.02 | 44.52 | 156.54 |
| Inferred | 78.05 | 11.08 | 90.16 |
| Total | 491.19 | 287.59 | 779.81 |
| Million tonnes | RMB | IBP | Total |
|---|---|---|---|
| Proved | 225.9 | 174.0 | 399.0 |
| Probable | 48.4 | 12.0 | 60.4 |
| Total | 274.3 | 186.0 | 460.0 |
Reported in accordance with JORC 2012 Edition, as per October 2018, by RPM Global.
Coal quality · data up to Dec 2025
3,300 – 3,500GAR kcal/kg
- Total moisture45.00%
- Ash6.00%
- Total sulphur0.40%
Growth
20 by 29
Combined coal sales grew from 4.11 million tonnes in 2024 to 5.82 million tonnes in 2025, around 41% year on year. Our plan takes production to 20 million tonnes in 2029.
Export markets
- China
- Pakistan
- Thailand
- Vietnam
Infrastructure
Ports built for scale
Two river ports on the Belayan and a coal terminal on the Mahakam move our coal from stockpile to barge.
Belayan River · Existing
Long Mahli Port
- 3 barge loading conveyors (BLC) with feeder breakers
- BLC 1 and 2 at 1,000 tph, BLC 3 at 2,000 tph
- 2 product stockpiles, 600,000 t capacity
10 Mt port throughput capacity
Belayan River · Planned
Kembang Janggut Port
- 2 BLC at 2,500 tph each
- 2 hoppers and feeder breakers at 2,500 tph each
- 2 skyline stockpiling systems with 4 + 4 reclaim feeders
20 Mt port throughput capacity
Mahakam River · Existing + expansion
Kota Bangun Coal Terminal
- 1 BLC at 3,000 tph, a second planned
- 2 mechanical unloaders at 650 tph, 1,000 tph electric unit under construction
- Coal transfer barge at 700 tph for barge-to-barge loading
27 Mt port throughput capacity
Infrastructure roadmap · indicative phasing
20267.4 Mt
Central mine stockpile with 750,000 t capacity. PLN electricity connection for KBCT.
20279.0 Mt
30 km all-weather KJP hauling road for 120 t double trailers. Hauling contractor and accommodation facilities.
202814.0 Mt
Kembang Janggut Port BLC 1 and 2. Additional electric grab cranes at KBCT.
202920.0 Mt
KBCT second 3,000 tph BLC and a further 600,000 t product stockpile.
Inside Muliabara
People who move the operation
Employee well-being and partnership with the communities around our mine and ports are part of our mission, alongside safe, responsible and eco-friendly operations.
Meet our people01
Safety first
Safety is the first letter of STRIVE and the first check on every shift, from the pit to the jetty.
02
Environmental care
We hold our IUP licenses to account through responsible environmental management and cleaner, electrified port equipment.
03
Community partnership
We operate alongside the villages of Tabang and Kembang Janggut and grow with the communities we work in.
Drag to explore
We strive to connect and collaborate to create meaningful impact for all our stakeholders.
Partner with usContact
Where to find us
IUP-OP licenses
IBP 540/022/IUP-OP/MB-PBAT/II/2011 · valid until 2028
RMB 21/1/IUP/PMA/2018 · valid until 2029
Jakarta Head Office
Generali Tower, Gran Rubina Business Park Lt. 19
Jl. H.R. Rasuna Said Kav C-22, Karet Kuningan, Setiabudi
Jakarta Selatan 12940
The East Tower, Suite 1705, 17th Floor
Jl. DR Ide Anak Agung Gde Agung, Kav E3.2 No. 1
Jakarta 12950
Jl. MT Haryono, Perum Mediterania, Ruko/RC 1 No. 32
Kel. Air Putih, Kec. Samarinda Ulu
Kalimantan Timur
Bukit Jering, Muara Kaman
Kutai Kartanegara, Kalimantan Timur
Long Beleh Modang, Kembang Janggut
Kutai Kartanegara, Kalimantan Timur
Ports & terminal
Built to move 27 Mt a year
Two river ports on the Belayan and a coal terminal on the Mahakam take our coal from stockpile to barge, and on to the Muara Jawa anchorage.
Our facilities
One logistics chain, three river sites
Coal is hauled from the pit to Long Mahli Port, barged down the Belayan River to Kota Bangun Coal Terminal, then transferred to larger barges for the Mahakam run to the anchorage.
Belayan River · LMP
Long Mahli Port
Our first river port, 12 km from the RMB mine and 20 km from the IBP mine. Three barge loading conveyors with feeder breakers load river barges for the 178 km run to KBCT.
- Barge loading
- 3 BLCBLC 1 and 2 at 1,000 tph, BLC 3 at 2,000 tph
- Feeder breakers
- 1,000 tph each2 on BLC 3
- Product stockpiles
- 2 stockpiles600,000 t capacity
- Distance to KBCT
- 178 kmby river barge
10million tonnes a year port throughput capacity
Belayan River · KJP
Kembang Janggut Port
A new, larger port closer to the mine, 31 km from RMB and 39 km from IBP. It shortens the river leg to KBCT to 126 km and doubles port capacity for the 20 Mt plan.
- Barge loading
- 2 BLC2,500 tph each
- Hoppers & feeder breakers
- 2 units2,500 tph each
- Stockpiling
- 2 skyline conveyors4 + 4 reclaim feeders at 1,000 tph each
- Stock capacity
- 600,000 t productplus 100,000 t ROM stock
20million tonnes a year port throughput capacity
Mahakam River · KBCT
Kota Bangun Coal Terminal
At Bukit Jering, Muara Kaman, KBCT unloads river barges, stockpiles coal and reloads big barges for the 115 NM (213 km) trip to the Muara Jawa anchorage.
- Unloading
- 2 × 650 tph mechanical1 × 1,000 tph electric under construction, 2 more planned
- Barge loading
- 1 BLC at 3,000 tpha second 3,000 tph BLC planned
- Stockpile
- 600,000 ta further 600,000 t planned
- Barge to barge
- Coal transfer barge700 tph, plus 300 tph manual backup
- Power
- 5,000 kVAPLN grid connection for all KBCT facilities
- To anchorage
- 115 NMMuara Jawa / Muara Berau
27million tonnes a year port throughput capacity
Supporting infrastructure
Building for 20 Mt by 2029
New stockpiles, roads and site facilities are being added alongside the ports so every link in the chain keeps pace with production.
750,000t
Central mine stockpile
A central ROM stockpile at the mine, with loading by mobile equipment, to buffer production ahead of hauling.
30km
KJP hauling road
An all-weather road from the mine to Kembang Janggut Port, sized for 120 t double-trailer haul units.
On site
Contractor & accommodation facilities
Facilities for our hauling contractor and site accommodation for the people who run the operation. See accommodation.
Gallery
Around our facilities
Select a photo to view it larger.
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Accommodation
Life on site
A place to rest between shifts
Our site accommodation gives employees and contractors a safe, comfortable base between shifts.
Living on site
Homes built for shift life
Our mine sits 225 km northwest of Samarinda, six to seven hours by road. Good accommodation on site means our people spend less time on the road and more time resting.
The residences are modern single-storey houses with pitched roofs and covered verandas, linked by paved walkways and set among planted verges. Site accommodation is part of the infrastructure we are building toward 20 Mt by 2029.
What you'll find
Designed around the day
An orderly layout of houses, paths and parking that makes daily life on site simple.
Modern residences
Single-storey houses with pitched roofs, covered verandas and large windows for light and air.
Paved, lit walkways
Paved paths and street lighting connect the houses, so getting around is easy after a night shift.
Vehicle parking
Dedicated parking keeps site vehicles close to the residences and off the walkways.
Rest and safety
Well rested is safer
Safety is the first letter of STRIVE. Proper rest between shifts helps our people stay alert at the controls of trucks, cranes and conveyors.
- Comfortable housing for employees and contractors
- Paved, lit paths between residences
- Room to rest properly between shifts
Gallery
Around the accommodation
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Our People
Our people
The people behind every tonne
From the pit to the port to our offices in Samarinda and Jakarta, one team moves Muliabara forward.
One team
Five sites, one crew
Our people work across the mine at Long Beleh Modang, Long Mahli Port, Kota Bangun Coal Terminal, and our offices in Samarinda and Jakarta.
Our mission commits us to prioritizing employee well-being and partnering with the community while delivering profitability. That starts with how we work together every day.
2companies, IBP and RMB1entity since 2024
Core values
STRIVE, worn every day
Our six values are printed on the back of every uniform, in the same colors you see here.
- SSafetyEvery person goes home safe after every shift.
- TTeamworkMine, port and office work as one chain.
- RResilienceWe plan for change and keep delivering.
- IIntegrityWe do what we say and treat people fairly.
- VVisionaryWe build today for the operation of tomorrow.
- EExcellenceWe hold ourselves to world-class standards.
Safety
Safety first, every shift
Hard hats, high-visibility workwear and the green K3 occupational safety emblem are part of every working day, at the pit, the conveyors and the jetty.
- Safety is the first of our six core values
- Hard hats and high-visibility workwear on every site
- The K3 safety emblem on every uniform
Leadership
Sharing the plan, together
In team sessions, our leaders share where Muliabara is heading and listen to the teams who make it happen.
Community & environment
Planting for the future
Our teams plant tree seedlings on site, each one marked with the name of the person who planted it. It is one small way we act on our commitment to sustainable mining and responsible environmental management.
We work alongside the villages of Gunung Sari, Long Beleh Modang and Muai, and aim to grow together with the communities around our mine and ports.
Gallery
Our teams on site
Select a photo to view it larger.
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Facilities