Commodity: Tungsten

The RHA Project is located in an area of historic production, approximately 270km northwest of Bulawayo. Premier has previously advanced the RHA Project from an exploration project through to a producing tungsten mining operation, which is currently in a state of care and maintenance.

The RHA Project comprises 10 Mineral Claim Blocks, covering. Small-scale surface and underground mining was conducted at the site between 1931 - 1979 and 2015 -2018. Total production from the RHA Mine was 1,247.65 tonnes of wolframite concentrate, containing 65% WO3.

The deposit is approximately 800m in strike length and 300m wide with SAMREC code compliant resource of 22.14 million tonnes at 2.45kg per tonne in both the underground and open pit operations. (Please see resource table below)

To date, Premier has invested over US$21 million in the acquisition and development of the mine as well as the plant and necessary infrastructure.

The processing plant is a conventional gravity processing plant with a capacity of 40,000 tonnes per month. The plant is equipped with an XRT sorter to upgrade the feed to the plant and hence reduce the overall operating costs.

The plant produces a commercial tungsten concentrate (in excess of 60% W03) and there is currently an offtake agreement in place.

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Table 1: Summary Mineral Resource

 

Category	Gross			Net attributable			Operator
	Tonnes (millions)	WO3 Grade (kg/t)	Contained metal (kg)	Tonnes (millions)	WO3 Grade (kg/t)	Contained metal (kg)
Underground Mineral Resources
Measured	0.029	5.45	157,679	0.029	5.45	157,679	Premier
Indicated	0.076	6.31	479,936	0.076	6.31	479,936
Inferred	1.220	4.61	5,619,877	1.220	4.61	5,619,877
Total	1.325	4.72	6,257,493	1.325	4.72	6,257,493

 

Open Pit Mineral Resources
Measured	-	-	-	-	-	-	Premier
Indicated	0.707	1.47	1,039,655	0.707	1.47	1,039,655
Inferred	20.17	2.37	47,841,458	20.175	2.37	47,841,458
Sub-Total	20.882	2.34	48,863,534	20.882	2.34	48,863,534

 

Notes:

1. Premier is the operator of the RHA Tungsten Project (“RHA”).
3. Premier holds a 49 per cent. interest in RHA. RHA is indebted to Premier in excess of US$20m and until such time as this is settled, all concentrate produced will be attributable to Premier.
5. Mineral Resources which are not Mineral Reserves have no demonstrated economic viability.
7. The effective date of the Mineral Resource is 12 September 2017.
9. Mineral Resources for RHA have been classified according to SAMREC.
11. The Mineral Resource Estimate is based on information compiled by Mr Gerard Evans.
12. The contained WO3 metal values are rounded, actual grades and contained metal kg are accurately stated and any differences in the total are due to rounding.