Nickel mine
Kolaka nickel mine, Southeast Sulawesi
Our largest mine and the first to supply our own smelter. Mined benches are reshaped and replanted within two years.
- Ore mined 2025
- 9.8 Mt
- Concession
- 7,400 ha
- Rehabilitated
- 1,120 ha
Arga Mineral · IDX: ARGA
Responsible minerals for Indonesia’s energy transition.
Arga mines and processes nickel in Sulawesi and North Maluku, supplies coal under contracts that end in 2030, and is building the solar power its smelters will run on.
- 18.6Mtnickel ore mined in 2025
- 64ktnickel contained in our products
- 6,850employees and contractors
- 2,340haof land rehabilitated
Fiscal year 2025.
About Arga
Mining with a plan for the day after.
Arga was founded in 1996 as a coal contractor in East Kalimantan. Since 2018 we have moved into nickel, the metal in most electric-vehicle batteries, and committed to close our last coal pit by 2030.
Our business
From the pit to the port
We own every step between the ore body and the ship, which is how we keep costs and standards under one roof.
Nickel mining
Laterite nickel in Southeast Sulawesi and North Maluku.
Processing
Four RKEF lines turning ore into nickel pig iron and matte.
Coal
East Kalimantan mine, contracted until closure in 2030.
Ports & barging
Two jetties and 22 barges between our sites and ships.
Renewables
310 MW of solar planned for our smelters by 2028.
Where we operate
Six sites, one standard
Select a site to see what happens there.
Mine, plant or portHead office
Nickel mine
Halmahera nickel mine, North Maluku
Opened in 2021 with a nursery that grows native seedlings for every hectare we disturb.
- Ore mined 2025
- 8.8 Mt
- Concession
- 5,900 ha
- Seedlings grown
- 1.0 m
Processing plant
Morowali processing plant, Central Sulawesi
Four rotary-kiln electric-furnace lines. The fourth started production in September 2026.
- Nickel contained
- 64 kt
- Lines
- 4
- Solar by 2028
- 310 MW
Coal mine
Kutai coal mine, East Kalimantan
Our original business. Production is falling every year until the last pit closes in 2030.
- Coal 2025
- 6.2 Mt
- Closure
- 2030
- Land returned
- 980 ha
Port & barging
Balikpapan jetty, East Kalimantan
Barges load here for ships anchored offshore. A second jetty serves our Sulawesi sites.
- Barges
- 22
- Throughput
- 14 Mt
- Jetties
- 2
Head office
Head office, Jakarta
Finance, sales, engineering and the team that runs our sustainability programme.
- Employees
- 420
- Listed
- IDX since 2007
- Ticker
- ARGA
Sustainability
Every hectare we open, we plan to return.
Rehabilitation starts on the day a pit opens, with seedlings grown in our own nurseries from local seed.
- 2,340 harehabilitated to date
- 1.2 mnative seedlings planted in 2025
- 2030year our last coal pit closes
Investors
Investor relations
Upcoming events
Q3 2026 production and sales report
Site visit for analysts, Morowali
Interim dividend payment
News
