Source:
p. 15
PT Merdeka Copper Gold Tbk (“Merdeka”), a holding company with operating subsidiaries engaging in mining business activities. The subsidiaries are (i) PT Bumi Suksesindo (“BSI”) as the holder of the operation production mining business license for the Tujuh Bukit mine, (ii) PT Damai Suksesindo (“DSI”) which holds the adjacent exploration permit, (iii) PT Batutua Tembaga Raya (“BTR”) as the holder of operation production mining business license specifically for processing and refining.
Summary:
Mineralisation Type - High Sulphidation Epithermal.
Summary:
Mining Method - Conventional Open Pit.
Processing
- Heap leach
- Carbon in column (CIC)
- AARL elution
- Carbon adsorption-desorption-recovery (ADR)
- Solvent Extraction & Electrowinning
- Cyanide (reagent)
Source:
Summary:
The Tujuh Bukit Gold employs open pit mining, followed by ore crushing and agglomerating, stacking of agglomerated ore on the leach pad, leaching of the ore and recovery of gold and silver via an industry standard ADR Gold Processing Plant (Adsorption, Desorption and Recovery).
Agglomerated ores are trucked and stacked to the leach pad, and irrigated with diluted cyanide solution for 150 days.
At the ADR processing plant, gold and silver are recovered using industry standard methods of metal adsorption onto carbon, desorption off carbon and recovery through an electrowinning and refining circuit. Gold and silver are smelted to produce rough or doré bars that are transported offsite for final refining.
The Tujuh Bukit Gold has expanded its ore processing capacity from the original 4 million tonnes per annum to 8 million tonnes per annum – completed in Q2-2019. The heap leach pad, the total area of which had been expanded to increase its capacity to 56 Mt ........
Recoveries & Grades:
| Commodity | Parameter | 2019 | 2018 | 2017 |
|
Gold
|
Recovery Rate, %
| ...... | | |
|
Gold
|
Head Grade, g/t
| 1.19 | 1.58 | 2.16 |
|
Silver
|
Recovery Rate, %
| ...... | | |
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Reserves at December 31, 2019:
| Category | OreType | Tonnage | Commodity | Grade | Contained Metal |
|
Proven & Probable
|
Stockpiles
|
35.47 Mt
|
Gold
|
0.75 g/t
|
856 koz
|
|
Proven & Probable
|
In-Situ (OP)
|
0.52 Mt
|
Gold
|
0.9 g/t
|
15 koz
|
|
Proven & Probable
|
Stockpiles
|
0.52 Mt
|
Silver
|
15 g/t
|
0.1 M oz
|
|
Proven & Probable
|
In-Situ (OP)
|
35.47 Mt
|
Silver
|
31 g/t
|
35,048 M oz
|
|
Total Resource
|
In-Situ (OP)
|
180.5 Mt
|
Gold
|
0.52 g/t
|
2,375 koz
|
|
Total Resource
|
In-Situ (OP)
|
180.5 Mt
|
Silver
|
22 g/t
|
89.8 M oz
|
Commodity Production Costs:
| | Commodity | Units | 2020 | 2019 | 2018 | 2017 |
|
Cash costs
|
Gold
|
USD
|
|
...... †
|
374 / oz†
|
297 / oz†
|
|
All-in sustaining costs (AISC)
|
Gold
|
USD
|
...... ^†
|
...... †
|
596 / oz†
|
425 / oz†
|
^ Guidance / Forecast.
† Net of By-Product.
- Subscription is required.
Financials:
| | Units | 2019 | 2018 | 2017 |
|
EBITDA
|
M USD
| ...... | 155 | 100 |
- Subscription is required
Corporate Filings & Presentations:
| Document | Year |
|
...................................
|
2020
|
|
...................................
|
2020
|
|
...................................
|
2019
|
|
...................................
|
2019
|
|
Quarterly Report
|
2018
|
- Subscription is required.
News:
- Subscription is required.