1st Sep 2011 07:00
Maiden JORC Compliant Resource on Weatherly's Tsumeb Tailings Project
Weatherly International Plc ("Weatherly" or the "Company") today announces the results of the drilling of the Tsumeb tailings that was completed in May of this year.
Highlights:
·; A Measured Mineral Resource consistent with JORC Guidelines of 12mt grading 0.48% Cu, 0.77% Pb, 0.63% Zn and 12.74g/t Ag
·; Drilling completed by Dump and Dune, a South African contractor specialising in tailings dam work, with resource work undertaken by Coffey Mining
·; Initial metallurgical test work to be undertaken by Sedgman as part of ongoing feasibility study
Rod Webster Weatherly CEO Commented "I am very happy with the results, particularly the metal grades, which, at today's prices, represent a copper equivalent of over 1%*. This is higher than many of the world's existing copper mines, even when you take lower recoveries into account. This gives us great confidence that a viable process route will be established and that the project will proceed to full development."
The Tsumeb tailings site was drilled by Dump and Dune. A total of 109 holes were drilled on a nominal 75m by 75m spacing to an average depth of 15m using a specialised closed circuit auger rig. Samples were collected every 1.5m and sent to the Bureau Veritas laboratory in Swakopmund for analysis. A quality control program appropriate to the deposit was included and monitored by Coffey Mining.
Coffey Mining (SA) (Pty) Ltd was requested to complete an estimation of the resources in the tailings from the closed Tsumeb Copper Mine, and has concluded that they contain a Measured Mineral Resource of 12mt grading 0.48% Cu, 0.77% Pb, 0.63% Zn and 12.74g/t Ag. The mineral resource is classified in a manner consistent with JORC guidelines.
Samples have been sent to Amdel in Perth where the initial metallurgical test work will be supervised by Sedgman Engineering. Sedgman has adopted a 'base case' processing route utilising a simple regrind and refloat of the minerals to produce concentrates suitable for smelting but will also investigate a number of leaching alternatives that may be applicable.
Sedgman has been mandated to complete a feasibility study based on a throughput of around 2mtpa., with preliminary site investigations suggesting that the optimal approach will be to build a new plant on the existing Weatherly site, to take full advantage of the existing infrastructure, power and water supplies.
Considerable historical data exists, in particular the work carried out by Goldfields in the 1990's, which concluded that the existing plant could be modified to recover 40% of the copper, 45% of the lead and 65% of the silver to separate copper and copper/lead concentrates.
Competent Persons Statement
Ms. Kathleen Body, Principal Consultant - Resources of Coffey Mining, has reviewed and approved the technical information contained within this announcement in her capacity as a qualified person, as required under the AIM rules. Ms. Body is a registered Professional Natural Scientist (Pr.Sci.Nat.) in terms of the Natural Scientific Professions Act (Act 27 of 2003, South Africa) and is a "Competent Person" as defined in the JORC Code.
Glossary of Terms
A "Mineral Resource" is a concentration or occurrence of material of intrinsic economic interest in or on the Earth's crust in such form, quality and quantity that there are reasonable prospects for eventual economic extraction. The location, quantity, grade, geological characteristics and continuity of a Mineral Resource are known, estimated or interpreted from specific geological evidence and knowledge. Mineral Resources are sub-divided, in order of increasing geological confidence, into Inferred, Indicated and Measured categories.
A "Measured Mineral Resource" is that part of a Mineral Resource for which tonnage, densities, shape, physical characteristics, grade and mineral content can be estimated with a high level of confidence. It is based on detailed and reliable exploration, sampling and testing information gathered through appropriate techniques from locations such as outcrops, trenches, pits, workings and drill holes. The locations are spaced closely enough to confirm geological and grade continuity.
An "Indicated Mineral Resource" is that part of a Mineral Resource for which tonnage, densities, shape, physical characteristics, grade and mineral content can be estimated with a reasonable level of confidence. It is based on exploration, sampling and testing information gathered through appropriate techniques from locations such as outcrops, trenches, pits, workings and drill holes. The locations are too widely or inappropriately spaced to confirm geological and/or grade continuity but are spaced closely enough for continuity to be assumed.
An "Inferred Mineral Resource" is that part of a Mineral Resource for which tonnage, grade and mineral content can be estimated with a low level of confidence. It is inferred from geological evidence and assumed but not verified geological and/or grade continuity. It is based on information gathered through appropriate techniques from locations such as outcrops, trenches, pits, workings and drill holes which may be limited or of uncertain quality and reliability.
* Copper equivalent calculation was made based on metal prices at 31st Aug 2011.
Notes to Editors:
Weatherly is an AIM listed, copper focussed mining company, the principal assets of which are located in Namibia. It currently has two producing copper mines (Otjihase and Matchless), and is progressing two bankable feasibility studies (Tschudi and Tsumeb), which will enable Weatherly to achieve its medium term strategy of establishing a copper mining business capable of sustaining approximately 20,000tpa of copper at an average industry cost of production for ten years.
The Company also has a 25% stake in an AIM listed joint venture company, China Africa Resources Plc, which is currently focused on the development of the Lead/Zinc project at Berg Aukas in Northern Namibia.
For further information please contact:
Weatherly International Plc +44 (0) 20 7917 2989
Rod Webster, Chief Executive Officer
Dean Friday, Investor Relations Manager
Collins Stewart Europe Limited +44 (0) 20 7523 8350
John Prior, Adam Miller, Sebastian Jones
4C Communications (Investor Relations) +44 (0) 20 3170 7973
Carina Corbett
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