Kabwe Zinc & Lead Dumps 21/22 (Berkeley) - Zambian Copperbelt (sitios de interés)
Descripción del sitio
March 31, 2009 - Interim Results
We successfully commenced sales of unprocessed tailings from Dump 57 and, up to 30 November 2008, we mined tailings which yielded 2,861 tonnes of zinc and lead. This consignment was sold at an average price of US$85 (£58.62) per tonne, achieving total sales of £167,718
RESOURCE BASE
Basic Economic Assessment Prior to Feasibility Study
BMR is currently commissioning a Feasibility Study prior to proceeding to exploitation of the resources. Taking the resource table figures into consideration and their overall characteristics, the following broad-brush stages of exploitation are proposed. NB Sable Zinc owns parts of the mine Dumps not owned by BMR.
This processing plan includes the proposed BMR and Sable Zinc Dump resources to be processed separately.
Pyrite tails (Sable) could also contain 443,600t of Ore (39,900t of Zn and 12,000t of Pb). Other Dumps (Sable) could also contain 169,900t Ore (16,800t of Zn and 6,800t of Pb).
In total, 168,900t of Zinc and 46,500 of Lead could be contained in the BMR and Sable Sections. At a processing rate of 50,000 tons per month the life of these Dumps will be approximately 4 years.
The head grade of these Dumps is 215,400 tons of metal (8.94% mineralization). Of this total, the amount of metal attributable to BMR is 124,941 tons (98,140t of Zn and 26,801t of Pb).
At a LME metal price of US$1,800/ton the sales value of the metal attributable to BMR in this resource would be US$235 million over the 4 year processing period.
At a 70% recovery rate (30% processing loss), 87,459 tons of Zn and Pb could be recovered and sold by BMR.
Leaching or toll milling of the ore and sales of product as concentrate are considered to be the initial best production options for the Company.