Overview
| Status | Closing / Closed |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Production Start | ...  |
PT-FI began open-pit mining of the Grasberg ore body in 1990 and the final phase was mined during 2019. In aggregate, the Grasberg open pit produced over 27 billion pounds of copper and 46 million ounces of gold in the 30-year period from 1990 through 2019. |
Source:
p. 4,23
PT-FI is a limited liability company organized under the laws of the Republic of Indonesia. Freeport-McMoRan have a 48.76 percent share ownership in PT-FI and the remaining 51.24 percent share ownership is held by PT Indonesia Asahan Aluminium (an Indonesian state-owned enterprise).
Contractors
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Deposit Type
- Vein / narrow vein
- Breccia pipe / Stockwork
Summary:
The igneous-hosted ore bodies (the Grasberg open pit and block cave, and portions of the DOZ block cave) occur as vein stockworks and disseminations of copper sulfides, dominated by chalcopyrite and, to a lesser extent, bornite.
Summary:
PT-FI began open-pit mining of the Grasberg ore body in 1990. The final phase of the Grasberg open pit was mined during 2019, including the removal of the open pit ramps. In aggregate, the Grasberg open pit produced over 27 billion pounds of copper and 46 million ounces of gold in the 30-year period from 1990 through 2019.
Source:
Summary:
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Combined production numbers are reported under
Grasberg Complex
Operational Metrics:
| Metrics | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 |
|
Daily milling rate
| 400 t | 60,100 t | 133,300 t | 101,800 t | 119,700 t | 115,900 t | 69,100 t |
|
Daily mining capacity
| | | 275,000 t | | | | |
|
Ore tonnes mined
| | | 49 Mt | 37 Mt | 44 Mt | 42 Mt | 24 Mt |
|
Daily mining rate
| | | | | 180,500 t | 250,400 t | 298,400 t |
Reserves at December 31, 2018:
| Category | OreType | Tonnage | Commodity | Grade | Recoverable Metal |
|
Proven
|
Sulphide
|
1 Mt
|
Copper
|
2.65 %
|
|
|
Proven
|
Sulphide
|
1 Mt
|
Gold
|
5.7 g/t
|
|
|
Proven
|
Sulphide
|
1 Mt
|
Silver
|
7.97 g/t
|
|
|
Probable
|
Sulphide
|
4 Mt
|
Copper
|
1.08 %
|
|
|
Probable
|
Sulphide
|
4 Mt
|
Gold
|
1.51 g/t
|
|
|
Probable
|
Sulphide
|
4 Mt
|
Silver
|
3.12 g/t
|
|
|
Proven & Probable
|
Sulphide
|
5 Mt
|
Copper
|
1.26 %
|
0.1 B lbs
|
|
Proven & Probable
|
Sulphide
|
5 Mt
|
Gold
|
1.98 g/t
|
0.3 M oz
|
|
Proven & Probable
|
Sulphide
|
5 Mt
|
Silver
|
3.66 g/t
|
0.3 M oz
|
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Corporate Filings & Presentations:
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