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Zimbabwe
RHA Mine

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 Location:
270 km NW from Bulawayo, Zimbabwe

  Regional Office:
19 John Plagis Alex Park
Harare
Zimbabwe
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Overview

StatusCare and Maintenance
Mine TypeUnderground
Commodities
  • Tungsten
Mining Method
  • Longhole open stoping
Mine Life10 years (as of Jan 1, 2021)
RHA moved into production during 2017, which was then suspended on 9 January 2018. In December 2017, due to the lower ore delivery, anticipated grade and operating losses, the Board of Directors decided to place the RHA Tungsten mine under care and maintenance.

16 January 2023 - Mine in care and maintenance pending National Indigenisation and Economic Empowerment Fund (“NIEEF”) equity resolution. Return to production +- 6 months.


Owners

Source: p. 4,62
CompanyInterestOwnership
Premier African Minerals Ltd. 49 % Indirect
National Indigenisation and Economic Empowerment Fund 51 % Indirect
Premier holds a 49% interest in the RHA Tungsten joint venture, and has operational management control of the RHA Tungsten Mine. Premier’s JV partner is the government-backed National Indigenisation and Economic Empowerment Fund (NIEEF), with a 51% interest.

The plant is owned 100% by Premier.

Contractors

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Deposit Type

  • Vein / narrow vein


Summary:

Geology
The geology of Zimbabwe is dominated by Archean rocks which are overlain, in the northwest, by Proterozoic and Phanerozoic metamorphic and sedimentary rocks, in the area of the Project. In this area, phyllites, quartzites and gneisses are the dominant rocks.

The host country-rock comprises high-grade, strongly foliated biotite schists and paragneisses of the Tshontanda Formation belonging to the Precambrian Dete Inlier. The formation trends northeast on a regional scale, paralleling the trend of the Kamativi Inlier, and dips steeply to the northwest.

Mineralisation
RHA mine is situated within the multi-commodity Kamativi Tin Belt and occupies a land holding on a low ridge of approximately 850 m long and 300 m wide standing about 120 m above its surroundings. Historic mine workings are present and are in the form of adits, open pits, caved stopes, trenches, roads, and rock dumps that occupy the surface.

From information received from PAM it was noted that the known mineralised lodes and veins occur within an envelope that extends over a strike of approximately 400 m with a maximum width of 150 m. The lodes are thought to converge to the east of the property. The lodes strike approximately northeast-southwest paralleling the regional trend of Kamativi Inlier.

The host country-rock comprises high-grade, strongly foliated biotite schist’s and paragneisses of the Precambrian Dete Inlier belonging to the Tshontada Format ........


Mining Methods

  • Longhole open stoping


Summary:

Conceptual Mine Plan has been based on a revised RHA underground Mineral Resource estimate relating to the parts of the ore body included within the Conceptual Mine Plan. The objective of the new Conceptual Mine Plan is to assess the potential impact of returning RHA to production and assess whether RHA can generate a return on Premier's investment to date in surface infrastructure, plant and equipment at RHA at minimal additional capital costs, based on using just the existing vertical access shaft (the previous study had included the construction of a new high-capacity decline shaft).


Crushing and Grinding
Source: Subscription required


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.



Reserves at May 20, 2021:
A cut-off grade of 1.87kg/t WO3.

CategoryTonnage CommodityGradeContained Metal
Indicated 122.45 kt WO3 8763 g/t 1,073 t
Inferred 928.57 kt WO3 7253 g/t 6,735 t
Total Resource 1,051 kt WO3 7429 g/t 7,808 t



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Feb 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Feb 14, 2023
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
Annual Report 2016
Corporate Presentation 2014
Technical Report 2014
Subscription required - Subscription is required.

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