Overview
Stage | Construction |
Mine Type | Underground |
Commodities |
|
Mining Method |
- Longhole stoping
- Paste backfill
|
Mine Life | 10 years (as of Jan 1, 2020) |
The Area 5 upgrade progressed significantly during the year despite changes in scope, difficult ground conditions, COVID-19 related issues with logistics and contractors, all delays in manufacturing impacting the schedule. Rescheduling of underground activities has minimised the impact of the predicted delays to the 2022 mining schedule. |
Source:
p. 2
Renison is 50%-owned by Metals X through the Bluestone Mines Tasmania Joint Venture
Contractors
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Deposit Type
- Skarn
- Carbonate replacement
Summary:
Renison is the largest of three major Skarn, carbonate replacement, pyrrhotite-cassiterite deposits within western Tasmania. The Renison Mine area is situated in the Dundas Trough, a province underlain by a thick sequence of Neoproterozoic Cambrian siliciclastic and volcaniclastic rocks. At Renison there are three shallow-dipping dolomite horizons which host replacement mineralisation.
Mount Bischoff is the second of three major Skarn, carbonate replacement, pyrrhotite cassiterite deposits within western Tasmania. The Mount Bischoff Mine area is situated within the Dundas Trough, a province underlain by a thick sequence of Neoproterozoic- Cambrian siliciclastic and volcaniclastic rocks. At Mount Bischoff folded and faulted shallow dipping dolomite horizons host replacement mineralisation with fluid interpreted to be sourced from the forceful emplacement of a granite ridge and associated porphyry intrusions associated with the Devonian Meredith Granite, which resulted in the complex brittle / ductile deformation of the host rocks. Lithologies outside the current mining area are almost exclusively metamorphosed siltstones. Major porphyry dykes and faults such as the Giblin and Queen provided the major focus for ascending hydrothermal fluids from a buried ridge of the Meredith Granite. Mineralisation has resulted in tin-rich sulphide replacement in the dolomite lodes, greisen and sulphide lodes in the porphyry and fault / vein lodes in the major faults. All lodes cont ........

Mining Methods
- Longhole stoping
- Paste backfill
Summary:
Renison mine production stabilises at approximately 930,000 tonnes per annum (tpa) after an initial ramp-up from approximately 900,000 tpa, with production rate limited by stope production scheduling and underground asset capacity. Over the 10 year mine life, Area 5 contributes approximately 40% of total contained tin in mine production.
Area 5 subset Ore Reserve of 3.30 Mt at 1.87% Sn for 61,900 tonnes of contained tin, including 2.2 Mt at 2.11% Sn for 46,400 tonnes of contained tin from a distinct high-grade portion of the Mineral Resource.
Area 5 Mine Design
Renison staff selected mine design is based on a stope size of approximately 15 m x 15 m, and vertical stope height of 40 m. Hangingwall exposures have been minimised by creating vertical walls across the orebody (where required).
Long hole stoping with engineered backfill was selected to extract the wide orebody in Area 5. Mining will be in a bottom up sequence and a single continuous mining front from the north.
Area 5 Ventilation
The Area 5 Study has recommended the development of the No.14 Ventilation System as a ventilation exhaust system dedicated to Area 5. It comprises a series of three raise bored shafts with a planned diameter of 5.0 m from surface to 1020 mRL (approximately 1.2km depth) with connecting drives. A 55 m surface pre-sink is required to reach rock suitable for raise boring. A twin exhaust fan will be installed on the surface with ventilation ........

Source:
Summary:

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Projected Production:
Commodity | Units | Avg. Annual | LOM |
Tin
|
t
| 10,000 | 98,000 |
All production numbers are expressed as metal in concentrate.
Operational Metrics:
Metrics | |
Annual mining capacity
| ......  |
Ore tonnes mined, LOM
| ......  |
Annual milling capacity
| ......  |
Mining scale, tpd
| ......  |
* According to 2020 study.
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Reserves at March 31, 2020:
Category | Tonnage | Commodity | Grade | Contained Metal |
Proven & Probable
|
8,610 kt
|
Tin
|
1.4 %
|
120,300 t
|
Proven & Probable
|
8,610 kt
|
Copper
|
0.18 %
|
15,500 t
|
Total Resource
|
18,550 kt
|
Tin
|
1.57 %
|
291,600 t
|
Total Resource
|
18,550 kt
|
Copper
|
0.2 %
|
36,600 t
|
Mine Management:
Job Title | Name | Profile | Ref. Date |
.......................
|
.......................
|
|
Sep 28, 2022
|
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Corporate Filings & Presentations:
Document | Year |
Annual Report
|
2022
|
Other
|
2022
|
...................................
|
2021
|
...................................
|
2020
|
...................................
|
2020
|
Quarterly Report
|
2017
|
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