Overview

Mine Type	Open Pit
Status	Care and Maintenance
Commodities	Coal (thermal)
Mining Method	Truck & Shovel / Loader
Production Start	...
Snapshot	The Trisula Kencana Sakti (TKS) mine is comprised of TKS Concession and TKS Ampah Concession. The TKS Ampah Project is designed as a source for supplying coal to power and cement plants. TKS Ampah Mine was commissioned in 2018 at the South Pit. Mine was placed on care and maintenance in 2019. Salva Mining has reviewed the mine plan and performed cross-checks to ensure that the operation is practical and achievable. The mine plan targets a production rate of 0.2 Mtpa (at the North Pit) for the remaining mine life.

Deposit type

• Sedimentary

Summary:

Trisula Kencana Sakti Concession
The concessions lie in the Barito Basin of Central Kalimantan. The Barito Basin is defined by the Meratus Mountains to the east and separated from the Kutai Basin to the north by a flexure parallel to the WNW-ESE orientated Adang Fault.

Field Exploration identified lower quality Warukin coal seams in the core of a syncline, grading to higher quality Montalat coal seams toward the outer edges of the structure. The Tanjung Formation geology within the TKS Concessions is less well understood because exploration has been limited to coal outcrop mapping. It is expected that coal seams discovered in the older Tanjung Formation will have a higher calorific value and generally better quality characteristics than the younger Warukin and Montalat coal seams.

The main features in the concessions are a syncline structure over the main deposit area with relatively flat dips and younger sediments in the central part of the deposit and steeper dips in relatively older sediments, around the outer edges. Major faults are interpreted surrounding the deposit and controlling the boundaries of the coal to the north, south and east.

The deposit at TKS Concession contains approximately 19 modelled coal seams of which 4 have been split into upper and lower plies. The cumulative coal average thickness is 14.85 m in 19 seams.

The coal seams dip shallowly in the centre of the syncline to 5 degrees and up to 20 degrees around the edges. Steeper old sediments, containing higher-grade coal seams occur around the edges of the deposit where the geological structure is complicated by possible faulting.

Trisula Kencana Sakti Ampah Concession
The TKS Ampah coal concession area lies in the Barito Basin of Central Kalimantan, one of the largest coal-producing regions of Indonesia. According to the published geology, the lease is within an anticlinal structure containing the Tanjung and Montelat formations and Warukin Formations. These rocks are Eocene to Middle Miocene in age and are well known to contain extensive seams of thermal coal. Based on the work to date, a more likely interpretation of the regional geology is that the deposit area is in a syncline where relatively thick seams of Warukin age coal, are surrounded by hills containing older coal seams of the Montelat Formation.

The main features in the concession is a syncline structure over the main deposit area with relatively flat dips and younger sediments in the southern part of the deposit and steeper dips in relatively older sediments in the northern part of the deposit.

Coal Seam Occurrences – TKS Ampah North
The deposit at TKS Ampah North contains 17 modelled coal seams of which 4 have been split into upper and lower plies. The coal layer is a fold of anticline and syncline with a slope of 15 ° - 30 °. The S100, S200 and S250 seams are the most significant economic grouping with an average of 2.5 m of combined coal thickness.

Coal Seam Occurrences – TKS Ampah South
The deposit at TKS Ampah South contains 5 modelled coal seams of which 1 have been split into upper and lower plies. The S3 and S4 seams are the most significant economic grouping with an average of 1.2-1.3 m of combined seam thickness.

Mining Methods

- subscription is required.

Comminution

Crushers and Mills

Processing

Summary:

The average coal quality attributes of the coal seams considered are sufficient to be marketed as a medium CV thermal coal for domestic power generation purposes.

Coal will be sold from the stockpile area in an uncrushed form (as mined), hence no crushing facilities are planned to be constructed at River Jetty for TKS Ampah project. The stockpiles will be the coal selling point where the ownership of the coal transfers from TKS Ampah to customer.

Production

Operational metrics

Personnel

Job Title	Name	Profile	Ref. Date
.......................	.......................		Dec 31, 2022
.......................	.......................		Dec 31, 2022