Pasir Mine

The Pasir mine which KIDECO operates is located in Pasir regency (Kabupatan), Kalimantan province, over 1,300 km away from the Northeast of Jakarta.
The Pasir mine is an environment-friendly coal mine which started to produce coal commercially in 1993 after the long preparation from the early 1980s to the early 1990s by KIDECO including exploration, feasibility studies, and constructing all sorts of mining facilities.
From 3 million tonnes in the first year of production, the annual production volume has continued to increase, reaching almost 40 million tonnes currently. The accumulated volume passed 300 million tonnes in 2013.

Category Contents Notes
Location East Kalimantan about 1,300 km to the west
of Balikpapan, East Kalimantan
Shareholders 3 companies
including SAMTAN
SAMTAN : 49%,
2 others including INDIKA : 51%
Mining area 50,921 hectare 2/3 of the size of Jakarta
Coal reserves 1,376 mil. tonnes As of the end of 2013
Mining potentials 651 mil. tonnes As of the end of 2013
Annual production
40mil. tonnes
(as of 2011)
500,000 carloads of the 50 tonnes freight car
350 mil. tonnes
(since 1993)
Offtake 100 % Sale rights for the produced quantity
Coal yard size 116,000 M2 Equivalent to 16 soccer fields

* bcm : Bank Cubic Meter, cubic meter(m3) before mining

Category Roto/SM Samu Susubang Pinang Jatus Total
Size(ha) 27,400 7,900 9,000 6,100 50,921

The total reserves are 1,350 tonnes as of 2013, and the coal width per district ranges from 2 to 60 meters.

Category (district) Resources (mil.ton) Reserves (mil. ton) Coal width (M)
total 1,376 651  
Roto North 79 18 1~20
Roto South 264 157 1~40
Roto Middle 122 39 1~40
SM 883 421 1~20
Susubang 28 16 18

* Exact volumes can vary on new discovery resulting from exploration or mining

KIDECO's coal is classified as coal of 4,670~5,692Kcal/kg. With relatively high proportion of water and volatile matter and extremely low proportion of ash and sulfur, KIDECO coal is not only advantageous for environment protection but also for ash handling.

Category Pasir coal Australian coal Notes
Water 25% 8.0%  
Volatile matter 41.0% 30.0%  
Ash 2.0% 15.0% Environment-frinedly
and clean coal
Sulfur 0.1% 0.7%
Calorie (Kcal/Kg) 4,800 6,300  
District TM(%) Ash(%) TS(%) CV(kcal/kg)
R/North 19.6 2.8 0.11 5,470
R/South 24.9 3.1 0.11 4,870
R/Middle 24.8 4.2 0.10 4,730
SM 30.7 4.2 0.12 4,430
Susubang 20.2 2.5 0.12 5,240

Overburden Removal

KIDECO Pasir coal mine is an open pit mine, different from underground mines. The coal seam is distributed over the soil mixing hard mudstone in clay composition with sandstone partially.
The overburden removal process is to remove earth covering this coal seam by the use of heavy equipment and to transport it to the waste disposal area located outside the pit boundary.

The waste disposal method KIDECO applies at present is to create cracks through blasting in ground in composition of mudstone and sandstone and then to deploy loading equipment like shovel and backhoe and dump trucks with the carrying capacity of 100 to 200 tonnes to transport wastes. Currently,
PT Sims takes care of the overburden removal process in Roto North pit, and removal process in Roto South Pit is being taken care by PT Pama and PT Buma, which both are local contractors specialized in overburden removal.

Production of ROM Coals

Following the overburden removal process, the process of mining coals involves small-size mining equipment to mine coals and then carries raw coals to the ROM stockpile from pit.
The mining is composed of two tasks: raw coal loading and transportation. Mining equipment deployed consists of small excavators (2.8㎥) for loading task and 30 tonnes dump trucks for transportation. The local contractors carry out the entire mining process. The ROM stockpile capacity is 500,000 tonnes. The coal quality control program is implemented in the ROM stockpile to supply high quality coals satisfying consumers' requirements. Thanks to the low ash content of KIDECO coal, coal transported to the ROM stockpile does not need a supplementary washing process.


The crushing process is followed to crush coals into the right size customers require before coals are shipped at the coal terminal.
The raw coals mined in pits and transported to the crushing facility gone through a series of processes like magnetic separator and crushing without a supplementary washing process, become particles with size under 50mm. And the crushed coal is stored in the coal hopper and then transported to the coal terminal by the coal hauler. There are three processing facilities with the processing capability of 1,200 tonnes per hour in Line A,D, 1,500 tonnes in Line B, 2,000 tonnes in Line C and 2,000 tonnes in Line SM A,B. And they are designed to independently carry out crushing and loading.

Inland Transportation

Transportation process is to carry coals crushed in the crushing facilities to the Tanah Merah coal terminal (TMCT) located 39 km away from the mine by large coal haulers using the private road dedicated for coal transportation.
KIDECO's exclusive road is an all-weather pave for four seasons. It's been gone through an improvement program to make curved sections straight, which brings much higher safety and transportation efficiency than other mines. At present, three transportation contractors including PT Trasindo which Samtan directly invested are responsible for the coal transporting process.


The stockpiling process is a series of activities to store coals transferred to TMCT coal stockpile facility before the coals are loaded into the barges.
The coals transported via haulers from the crushing facilities are loaded into the coal hoppers in TMCT, put into the belt conveyors and then stored in the stockpile facility or shipped into the barges without the stockpile processing. To maintain the coals in high quality, KIDECO installed the automatic samplers to all the loading conveyor systems. The samplers installed, take samples used in the coal quality analysis. And, each conveyor line is installed with a magnetic separator to get rid of foreign materials. The stockpile capacity of the TMCT is 800,000 tonnes and the capacity of loading facilities is more than 120,000 tonnes per day and 55 million tonnes per annum. In addition, three independent international surveyors (PT Sucofindo, PT Geoservices, and PT Carsurin) perform sampling and analysis at TMCT.

Barging & Shipping

The shipping and barging is to load coals in TMCT stockpile facility into the barges and carry coals to transshipment point for loading. The barge loading facility in the TMCT has three lines of loaders: ship loader, barge loader, and fixed barge loader. The 8,000 to 12,000 tonnes barges loaded with coals from this facility are towed by a tugboat in the 2,400HP class to sail to Adang Bay, the transshipment location, 59km away from the TMCT. The coals are transshipped from the barge to the vessel either by using ship's own gears or four Floating Cranes(FC) and two Floating Loading Facilities(FLF). Adang Bay can facilitate loading up to the Cape-size(100,000 to 150,000 tonnes) vessels.

Environmental Design

KIDECO strategically and meticulously plans the entire process from mine lot development to environmental restoration.

  1. Through optimal environmental design, we restore nature into a greener state than prior to development.
  2. We plant a variety of tress including acacia, albizia, mango, grapefruit trees.
  3. We perform ongoing care and maintenance through weed removal and pest management.
  4. By closely monitoring the growth of the trees, we systemize the maintenance of the environment.
  5. We create environmentally friendly ponds that help fight droughts.

KIDECO contributes to the local economy by choosing profitable environmental businesses.

  1. 360,000 trees are planted annually.
  2. Mango and grapefruit trees have been beneficial to the local economy.

KIDECO environmental restoration projects are ongoing and systematically managed.

  1. KIDECO does not do short-live environmental businesses.
  2. With ongoing care and maintenance we are able to create a bigger forest than before.
  3. Environmentally friendly ponds created by KIDECO not only fights droughts, natural disasters, but also helps conserve ecosystems of animals.