Overview
| Stage | Production |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Processing |
- Crush & Screen plant
- Gravity separation
- Flotation
|
| Mine Life | 2033 |
The Mission Complex, an open-pit mine composed of the Mission, Eisenhower, Pima, Mineral Hill and South San Xavier properties and the nearby North San Xavier mine. |
Source:
p. 50,234
The Mining Division of Grupo Mexico, S.A. de C.V. (GMéxico) is controlled by Americas Mining Corporation (AMC) which operates the United States subsidiary - Asarco LLC (Asarco).
Asarco LLC includes the Mission, Ray and Silver Bell Arizona mines.
Summary:
The Mission deposit is a porphyry copper skarn deposit located southwest of the city of Tucson in Pima County, Arizona. A series of Paleozoic sedimentary rocks.
Summary:
The Mission Complex, an open-pit mine composed of the Mission, Eisenhower, Pima, Mineral Hill and South San Xavier properties and the nearby North San Xavier mine.
| Crusher / Mill Type | Model | Size | Power | Quantity |
|
Cone crusher
|
.......................
|
|
|
|
|
SAG mill
|
|
|
|
2
|
|
Ball mill
|
|
|
|
12
|
|
Ball mill
|
|
|
|
1
|
|
Rod mill
|
|
|
|
6
|
Processing
- Crush & Screen plant
- Gravity separation
- Flotation
Source:
Summary:
The treated ore is first crushed with a primary crusher to less than 20 centimeters and then crushed by a fine crushing plant to less than 16 millimeters using seven large vibrating screens and five crushers. To extract the ore from the tepetate, a combination of six circuits is used. The ground ore is pumped into one of the six flotation sections, where chalcopyrite and bomite are separated from the tepetate using the sulfide flotation process.
Recoveries & Grades:
| Commodity | Parameter | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 |
|
Copper
|
Head Grade, %
| ...... | ...... | 0.42 | 0.44 | 0.46 | 0.41 |
|
Copper
|
Recovery Rate, %
| ...... | ...... | 84.2 | 85.1 | 83.1 | 84.1 |
|
Copper
|
Concentrate Grade, %
| ...... | ...... | 24.5 | 23.9 | 24.2 | 23.2 |
Production:
| Commodity | Product | Units | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 |
|
Copper
|
Metal in concentrate
|
M lbs
| ...... | 96 | 0 | 150 | 151 | 134 | 115 |
|
Copper
|
Concentrate
|
kt
| ...... | 179 | 204 | 271 | 283 | 262 | 220 |
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Operational Metrics:
| Metrics | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 |
|
Total tonnes mined
| ...... | ...... | 52,292 kt | 47,640 kt | 48,194 kt | 59,851 kt |
|
Ore tonnes mined
| ...... | ...... | 17,385 kt | 18,003 kt | 17,742 kt | 17,450 kt |
|
Tonnes milled
| ...... | ...... | 17,385 kt | 18,003 kt | 17,742 kt | 17,450 kt |
|
Daily milling rate
| ...... | ...... | 53.3 kt | 54.4 kt | 52.6 kt | 49 kt |
|
Stripping / waste ratio
| ...... | ...... | 2.01 | 1.65 | | |
|
Daily mining rate
| ...... | ...... | 144,000 t | 144,000 t | 144,000 t | 141,000 t |
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Reserves at December 31, 2018:
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Proven & Probable
|
266,268 koz
|
Copper
|
0.389 %
|
1,036 kt
|
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Corporate Filings & Presentations:
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Aerial view:
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