Overview
| Stage | Production |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Processing |
|
| Mine Life | 2032 |
PT Amman Mineral Internasional, a private equity firm, acquired the mine in November 2016.
Production data has not been publicly available since then. |
Source:
PT Amman Mineral Nusa Tenggara (AMNT) is an Indonesian mining company which operates the Batu Hijau mine. The shareholders of PT Amman Mineral Nusa Tenggara are PT Amman Mineral Internasional (82.2%) and PT Pukuafu Indah (17.8%).
Summary:
The deposit is hosted by a central stock of multiple tonalite porphyries intruded into older diorite and andesite volcanic wallrocks and activities continue to develop the reserve.
Summary:
The Batu Hijau is a large open pit porphyry copper/gold deposit mined using traditional truck and shovel techniques.
The Batu Hijau operation is currently extracting Phase 6 ore utilizing a mining fleet of 111 trucks, six electric shovels and three excavators which are capable of moving an average of 815,000 tonnes of material per day.
| Crusher / Mill Type | Model | Size | Power | Quantity |
|
SAG mill
|
|
|
|
2
|
|
Ball mill
|
|
|
|
4
|
Summary:
The mill includes two SAG Mills and four ball mills.
Source:
Summary:
At Batu Hijau, ore containing copper and gold is crushed to a coarse size at the mine and then transported from the mine via conveyor to a concentrator, where it is finely ground and then treated by successive stages of flotation, resulting in a copper/gold concentrate containing approximately 26% to 29% copper. The concentrate is dewatered and stored for loading onto ships for transport to smelters.
Production:
| Commodity | Units | 2016 | 2015 | 2014 | 2013 |
|
Gold
|
koz
| 841 | 676 | 76 | 48 |
|
Copper
|
M lbs
| ...... | ...... | ...... | ...... |
All production numbers are expressed as metal in concentrate.
Operational Metrics:
| Metrics | 2015 |
|
Daily mining capacity
| 815 kt |
Reserves at December 31, 2015:
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Proven
|
210,103 k tons
|
Gold
|
0.017 oz/ton
|
3,670 koz
|
|
Proven
|
210,103 k tons
|
Silver
|
0.05 oz/ton
|
10,020 koz
|
|
Proven
|
210,103 k tons
|
Copper
|
0.53 %
|
2,226 M lbs
|
|
Probable
|
448,247 k tons
|
Gold
|
0.004 oz/ton
|
1,835 koz
|
|
Probable
|
448,247 k tons
|
Silver
|
0.02 oz/ton
|
8,453 koz
|
|
Probable
|
448,247 k tons
|
Copper
|
0.35 %
|
3,154 M lbs
|
|
Proven & Probable
|
658,350 k tons
|
Gold
|
0.008 oz/ton
|
5,505 koz
|
|
Proven & Probable
|
658,350 k tons
|
Silver
|
0.03 oz/ton
|
18,474 koz
|
|
Proven & Probable
|
658,350 k tons
|
Copper
|
0.41 %
|
5,381 M lbs
|
|
Measured
|
113,608 k tons
|
Gold
|
0.012 oz/ton
|
1,402 koz
|
|
Measured
|
113,608 k tons
|
Silver
|
0.04 oz/ton
|
3,917 koz
|
|
Measured
|
113,608 k tons
|
Copper
|
0.39 %
|
886 M lbs
|
|
Indicated
|
270,103 k tons
|
Gold
|
0.007 oz/ton
|
1,979 koz
|
|
Indicated
|
270,103 k tons
|
Silver
|
0.03 oz/ton
|
7,216 koz
|
|
Indicated
|
270,103 k tons
|
Copper
|
0.35 %
|
1,896 M lbs
|
|
Measured & Indicated
|
383,711 k tons
|
Gold
|
0.009 oz/ton
|
3,381 koz
|
|
Measured & Indicated
|
383,711 k tons
|
Silver
|
0.03 oz/ton
|
11,134 koz
|
|
Measured & Indicated
|
383,711 k tons
|
Copper
|
0.36 %
|
2,783 M lbs
|
|
Inferred
|
34,432 k tons
|
Gold
|
0.003 oz/ton
|
82 koz
|
|
Inferred
|
34,432 k tons
|
Silver
|
0.02 oz/ton
|
618 koz
|
|
Inferred
|
34,432 k tons
|
Copper
|
0.3 %
|
206 M lbs
|
Commodity Production Costs:
| | Commodity | Units | 2015 | 2014 |
|
Total cash costs (sold)
|
Copper
|
USD
|
1.05 / lb
|
3.24 / lb
|
|
Total cash costs (sold)
|
Gold
|
USD
|
439 / oz
|
1,123 / oz
|
|
All-in sustaining costs (sold)
|
Copper
|
USD
|
1.43 / lb
|
4.14 / lb
|
|
All-in sustaining costs (sold)
|
Gold
|
USD
|
618 / oz
|
1,458 / oz
|
Financials:
| | Units | 2015 | 2014 |
|
Capital expenditures
|
M USD
|
98
|
59
|
|
Pre-tax Income
|
M USD
|
671
|
-315
|
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