Overview
| Stage | Production |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Processing |
- Sulfuric acid (reagent)
- Crush & Screen plant
- Heap leach
- Solvent Extraction & Electrowinning
|
| Production Start | ...  |
| Mine Life | 10 years (as of Jan 1, 2015) |
Source:
p. 15,25
Gabriela Mistral in May 2008, at that time known as the Gaby Project, a wholly owned Codelco subsidiary, started operations at the Gabriela Mistral mine, which would become a Codelco Division in 2010.
Codelco Corp. operates seven mine sites (known as “divisiones”): Chuquicamata, Ministro Hales, Radomiro Tomic, Gabriela Mistral, Salvador, Andina, El Teniente, in addition to the Ventanas Smelter and Refinery.
Contractors
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Summary:
Porphyry copper deposit, its main mineralized body is oxidized in a mineralized zone, mainly Chrysocolla, Black and Atacamite oxides in low presence, deposited under sterile coverage of post mineral gravels with an average thickness of 50 m.
Summary:
Gabriela Mistral in it´s 8th Division operates the largest fleet of autonomous trucks in the world. A fleet of 17 Komatsu 930E4 AT Trucks, allowing to transport 210,000 ton/day of materials.
Processing
- Sulfuric acid (reagent)
- Crush & Screen plant
- Heap leach
- Solvent Extraction & Electrowinning
Source:
Summary:
The production process involves different stages: crushing (primary, secondary and tertiary), acid curing in drums, heap leaching, tailings disposal, solvent extraction (SX), electro-winning (EW), and the cathodes produced are transported to the Mejillones port.
Recoveries & Grades:
| Commodity | Parameter | 2019 | 2018 | 2017 |
|
Copper
|
Head Grade, %
| ...... | 0.37 | 0.43 |
Production:
| Commodity | Units | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|
Copper
|
t
| ...... | ...... | ...... | 107,247 | 122,737 | 121,712 | 125,009 |
All production numbers are expressed as cathode.
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Operational Metrics:
| Metrics | 2019 | 2018 | 2017 | 2013 |
|
Ore tonnes mined
| 38,180 kdmt | 39,430 kdmt | 40,503 kdmt | |
|
Daily mining capacity
| | | | 210,000 t |
|
Annual mining capacity
| | | | 76 Mt |
Reserves at December 31, 2021:
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Proven
|
247 Mt
|
Copper
|
0.36 %
|
0.9 Mt
|
|
Probable
|
28 Mt
|
Copper
|
0.37 %
|
0.1 Mt
|
|
Proven & Probable
|
275 Mt
|
Copper
|
0.36 %
|
1 Mt
|
|
Measured
|
351 Mt
|
Copper
|
0.34 %
|
1.2 Mt
|
|
Indicated
|
102 Mt
|
Copper
|
0.31 %
|
0.3 Mt
|
|
Inferred
|
66 Mt
|
Copper
|
0.32 %
|
0.2 Mt
|
|
Total Resource
|
519 Mt
|
Copper
|
0.33 %
|
1.7 Mt
|
Corporate Filings & Presentations:
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Aerial view:
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