Overview
| Stage | Production |
| Mine Type | Underground |
| Commodities |
|
| Mining Method |
- Sub-level stoping
- Longhole open stoping
|
| Production Start | ...  |
| Mine Life | 5 years (as of Jan 1, 2021) |
Source:
p. 6
Contractors
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Summary:
Freda Rebecca is lies on the central axis of the synclinal Mazowe-Bindura Greenstone belt. The geology of the area around FRM is characterised by the Shamvaian sediments, diorite and granodiorite. Dolerite dykes cut through the three rock types. The FRM orebodies are largely hosted by the Prince of Wales diorite and the Bindura granodiorite, with limited transgressions into the metasediments. The mineralisation is hosted within two major shear envelopes: the footwall/curvilinear Freda-Promoter which strikes from north east through to east west and dips at 0 to 25° to the south; and the Rebecca which strikes north west and dips at 35°. Individual shears are variable in width and these two systems merge to the south west at depth flattening at around 850m elevation and extending into the metasediments. The shear system is characterized by a set of anastomosing shears separated by relatively undeformed rock units.
At FRM there are two styles of sulphide mineralisation: older disseminated, pervasive sulphides occurring throughout the sediments, diorite and granodiorite, which vary in intensity and grade; and younger mineralisation restricted to shear zones and associated with higher gold grades. In both types of mineralisation, higher grades are associated with fine-grained sulphides. Sulphides include arsenopyrite, pyrite, pyrrhotite and chalcopyrite. Mineralisation is characterised by patchy micaceous chloritic alteration with some silicification and to a lesser deg ........
Mining Methods
- Sub-level stoping
- Longhole open stoping
Summary:
The underground mine is accessed by ramps driven from portals in the old open pits and the current depth of mining is some 200m below these portals. A sub-level stoping mining method is predominantly employed and the ore is trucked to surface using a variety of articulated dump trucks. One-way haul distances are of the order of 3-3.7km and the cycle time for trucking is typically 45 min. Adaptations of this mining method as well as room and pillar mining are undertaken depending on the characteristics of the orebody and stope design.
Source:
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Flow Sheet:
Summary:
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Production:
| Commodity | Units | 2022 | 2021 * | 2017 | 2016 |
|
Gold
|
oz
| ...... ^ | ...... | 58,950 | 67,673 |
All production numbers are expressed as metal in doré.
* Average annual production reported in 2021
^ Guidance / Forecast.
Operational Metrics:
| Metrics | 2021 | 2017 | 2016 |
|
Daily ore mining rate
| ...... | | |
|
Ore tonnes mined
| ...... | 1,290,000 t | 1,215,089 t |
|
Tonnes milled
| ...... | 1,100,000 t | 1,199,074 t |
|
Annual mining capacity
| ...... | 1,800,000 t | |
|
Annual milling capacity
| ...... | 1,200,000 t | |
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Reserves at March 31, 2016:
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Indicated
|
14,658 kt
|
Gold
|
2.39 g/t
|
1,126 koz
|
|
Inferred
|
7,252 kt
|
Gold
|
2.49 g/t
|
581 koz
|
|
Total Resource
|
21,910 kt
|
Gold
|
2.42 g/t
|
1,708 koz
|
Commodity Production Costs:
| | Commodity | Units | 2017 | 2016 |
|
All-in sustaining costs (AISC)
|
Gold
|
USD
|
1,150 / oz
|
1,076 / oz
|
|
C1 cash costs
|
Gold
|
USD
|
1,010 / oz
|
943 / oz
|
Corporate Filings & Presentations:
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