| Contractor | Contract | Description | Ref. Date | Source |
|
Empire Southwest
|
Equipment procurement or fabrication
|
Carlota has developed a strong relationship with the dealer, Empire Cat, who supplied the Cat 6015B.
|
Sep 30, 2023
|
|
Summary:
The Miami-Globe mining district in eastern Arizona is known for economically large-scale porphyry Cu, Au, and Mo deposits, such as the Miami-Inspiration and the Cu Resolution.
The area is built of igneous, metamorphic and sedimentary rocks of various ages from the early Proterozoic to the Tertiary.
The Carlota deposit is formed by the surface mineralization of copper oxides in the proterozoic Pinal Schist. Chrysocolla is a dominant ore mineral and usually occurs as coatings, crusts and filling in fractures and heavily desintegrated rock masses.
Reserves at December 31, 2014
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Measured
|
1,230 kt
|
Copper
|
0.53 %
|
6,521 t
|
|
Indicated
|
3,657 kt
|
Copper
|
0.42 %
|
15,358 t
|
|
Measured & Indicated
|
4,887 kt
|
Copper
|
0.45 %
|
21,879 t
|
|
Inferred
|
159 kt
|
Copper
|
0.47 %
|
751 t
|
Summary:
Copper ore extraction by the Carlota mine is by conventional methods typical for open-pit metals mines, i.e. the ore is mined by blasting and then is transported by haulage trucks.
In 2023, access to the Cactus open pit - Phase III was launched, enabling the extension of the mine life to 2027.
Comminution
Crushers and Mills
Milling equipment has not been reported.
Processing
- Sulfuric acid (reagent)
- Heap leach
- Solvent Extraction & Electrowinning
Summary:
Due to the nature of the ore, it is processed using the heap leach, the solvent extraction and electrowinning (SX/EW) method which involves subjecting the ore to sulphuric acid. The pregnant leach solution (PLS) is pumped out of the heap and after the initial mechanical cleaning is subjected to the SX process, followed by the EW electrowinning process. The end product is electrolytic copper in the form of cathodes.
Summary:
Carlota mine do not release water to the environment at all. Carlota`s engineering solutions ensure separation of contaminated water from clean water. Rainwater that has been in contact with the mine is captured and then used in technological processes.
Production
| Commodity | Units | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 |
|
Copper
|
kt
| 3.9 | 4.1 | 5.4 | 5 | 4.4 | 3.2 |
All production numbers are expressed as cathode.
Production Costs
Commodity production costs have not been reported.
Financials
| | Units | 2021 |
|
Revenue
|
M PLN
| 209 |
|
Pre-tax Income
|
M PLN
| 93 |
|
After-tax Income
|
M PLN
| 93 |
|
Operating Cash Flow
|
M PLN
| 11 |
Heavy Mobile Equipment
| HME Type | Model |
|
Excavator
|
Caterpillar 6015B
|
|
Truck (haul)
|
Caterpillar 785
|
Personnel
| Job Title | Name | Profile | Ref. Date |
|
Environmental Manager
|
Mauricio Acevedo Vidal
|
|
Sep 2, 2024
|
|
General Manager
|
Brock Johnston
|
|
Sep 2, 2024
|
|
Sr. General Manger / Head of Operations
|
John Haynes
|
|
Sep 2, 2024
|
| Employees | Year |
|
62
|
2023
|
|
65
|
2022
|
|
66
|
2021
|
|
69
|
2020
|
|
64
|
2019
|
|
56
|
2018
|