The underground work program initiated at the Carmen deposit is aimed at providing more than 1,000 metres of underground access to high-grade gold-silver mineralized structures, including the Carmen and Hilos structures (see figures 2 and 3 below). The underground work will include detailed mapping and sampling within the historic mine workings that were originally developed in the 1940’s. Historic mining at Carmen occurred between 1937 and 1944. Reported high-grade gold-silver mining produced 68,000 tonnes at 19.3 grams per tonne gold and 311 grams per tonne silver. Production was halted in 1944 due to lack of supplies during World War II.
“Kimber has, over the last four months, rehabilitated a significant portion of the 1940s mine workings within the Carmen deposit,” reported Gordon Cummings, President and CEO of Kimber. “Detailed sampling of the underground adits should give us valuable additional information about the nature, controls, grade and continuity of gold-silver mineralization along the Carmen and Hilos structures at various elevation levels.” he said. “We expect assay results to be released over the coming months. In addition, underground access in the core of the proposed open pit, outlined in the 2011 Preliminary Economic Assessment for the Monterde Project, will provide access to sample material for future metallurgical testing.”
Further, rehabilitation of the Los Hijos levels 1 and 2 is complete, which provides access to the Hilos structure at elevations of 2,228 metres and 2,280 metres, respectively. Access for both levels provides strike length access to the Hilos structure for 225 metres and 120 metres, respectively.
Sampling within the underground workings will include diamond saw channel sampling, taken in compliance with the Company’s core drilling QA/QC protocol, and will be analyzed for gold, silver and trace elements with ALS Chemex. The vein exposures in the workings will be sampled perpendicular to the strike of the structure, with the widths of the individual samples determined by the mineralization and alteration. The cross cut drifts will be sampled along the previous hand channel samples for comparison to earlier historic data, with sample widths again determined by mineralization, but typically on 1.5 metre intervals. Rehabilitation of accessible raises and stopes will also provide vertical coverage of the sample data from the ribs and backs of the workings. The data will be compared to the drill data in the area of the sampling for validation crosschecks and to analyze trends where stronger gold-silver mineralization occurs.
The analysis of trace element geochemistry is expected to provide additional supporting information on the trends of the high grade structures and is expected to aid in future exploration programs and technical studies.
Geological mapping of the workings will be completed to provide additional data on the nature of and controls on mineralization, structure and alteration along the levels.
To view Figures 1, 2 and 3 please click on the following link: http://media3.marketwire.com/docs/KBR0927.pdf
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We acknowledge the [financial] support of the Government of Canada.