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Indonesia
Barasentosa Lestari (BSL) Mine

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 Location:
64 km NE from Lubuklinggau, Indonesia

  Regional Office:
Sinar Mas Land Plaza Tower II 6th floor, Jl. M.H. Thamrin no. 51
Jakarta
Indonesia
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Fax021-3199-0319
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WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Coal (thermal)
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2042
The Barasentosa Lestari (BSL) Concession consists of two sub-blocks, namely North and South Blocks, covering a total area of 23,300 Ha. North Block has not been drilled extensively as such no Coal Resources or Reserves was delineated at the North Block.

4 key prospective areas were identified in the South Block. These sub-blocks are:
- Muara Lakitan ("ML");
- Belani ("BL");
- Batukucing ("BK");
- Ampalau coal deposits (no resource drilling and coal resource estimate).


Owners

Source: p. 17,149
CompanyInterestOwnership
Golden Energy and Resources Ltd. (GEAR) 7 % Indirect
As of August 21, 2023, Golden Energy and Resources's (GEAR) ownership of PT Golden Energy Mines Tbk (GEMS) is approximately 7.00%. GEMS holds 100% of Barasentosa Lestari (BSL).

GEAR has approximately 7% ownership of Barasentosa Lestari (BSL) asset indirectly.

Contractors

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Deposit Type

  • Sedimentary


Summary:

The late Miocene to Pliocene Muara Enim Formation is the main coal-bearing formation present in the South Sumatra Basin. The thickness of this formation, in the area around Muara Enim and Lahat, is around 500-700m.The thickness of individual coal seams varies with the thickness of the formation, typically varying between 10 m to 30 m in thickness, with shallow marine clays at the base, and shoreline and delta plain facies (sand, clay, coal) at the top.

Muara Lakitan (ML Block)
The deposit has multiple coal seams with up to ten seams identified from Seam 200 to Seam 1050, in descending stratigraphic order (denoted I_200 to I_1050 respectively for modelling purposes) with multiple subseams and seam splits.

The in-situ coal is of lignite rank, with high Total Moisture (average TM 36.2%), low Calorific Value (CV 5,015 kcal/kg air-dried basis), low ash (average 5.3%) and low sulphur (average 0.3%).

Seam dips are relatively consistent in Muara Lakitan and are typically of the order of 15 to 20 degrees to the northeast. The Muara Lakitan is bounded to the north and south by major northwest trending transverse faults and is sub-divided into a number of sub-blocks by smaller-scale subparallel faults.

Belani (BL) Sub-block
The deposit has multiple coal seams with eleven different coal seams and their sub seams identified at Belani. These seams have a combined strike length of over 4km.The main seams out of the total package have be ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Open-cut mining by mining contractors, using suitably sized truck and excavator is proposed. The mining method can be described as a “multi seam, moderate to steep dip, open-cut coal mine using truck and shovel equipment in a combination of strip and haul back operations"

The assumptions are that due to the moderate to steep dip (15 -20 degree) of the coal, mining will need to occur in benches.

Muara Lakitan deposit
The coal seam distribution within the Muara Lakitan deposit resulted in the Optimiser identifying two main pits where the main bottom seam is 970. Seams 800 group and 900 groups are well developed in both the northern and southern pits. The pits were subject to adjustments to form a practical pit design, which lead to the exclusion of the minor narrow pit shells and the resultant formation of two separate pit shells (Mineable Pit Shells), which formed the basis of the subsequent reserves estimate.

Batukucing deposit
The coal seam distribution within the Batukucing deposit resulted in the Optimiser identifying the main pit where the main basal seam is B910 well developed in the pit. The pit was subjected to adjustments to form a practical pit design, which led to the exclusion of the minor narrow pit shells and the resultant formation of the main pit shell, (Mineable Pit Shell), which formed the basis of the subsequent reserves estimate.

Belani deposit
The coal seam distribution within the Belani deposit re ........


Crushing and Grinding


Processing

Source: Subscription required

Summary:

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Production:

CommodityUnits202320222021202020192018
Coal (thermal) Mt  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required0.17
All production numbers are expressed as ROM coal. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202320222021202020192018
Coal tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required0.93 Mt0.83 Mt0.17 Mt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required  ......  Subscription required
Waste  ......  Subscription required  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
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Reserves at December 31, 2022:

CategoryTonnage CommodityMarketable Coal
Proven 137.7 Mt Coal (thermal) 137.7 Mt
Probable 50.9 Mt Coal (thermal) 50.9 Mt
Proven & Probable 188.6 Mt Coal (thermal) 188.6 Mt
Measured 217 Mt Coal (thermal)
Indicated 150 Mt Coal (thermal)
Inferred 88 Mt Coal (thermal)
Total Resource 455 Mt Coal (thermal)

Financials:

Units2023
Capital expenditures (planned) M USD  ......  Subscription required
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Heavy Mobile Equipment as of December 31, 2022:
HME TypeLeased or
Contractor
Excavator Leased
Truck (haul) Leased

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 31, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 9, 2023
....................... Subscription required ....................... Subscription required Subscription required Oct 9, 2023
....................... Subscription required ....................... Subscription required Subscription required Dec 31, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 9, 2023
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2022

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Quarterly Report 2023
Technical Report 2023
Annual Report 2022
Annual Report 2022
Sustainability Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
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