Encouraged by results from an exploration program involving both surface and underground work, Redfern Resources (TSE) has accelerated permitting and engineering feasibility studies for its Tulsequah Chief project in northwestern British Columbia.
The company recently filed the pre-application for a mine development certificate, previously known as the Prospectus document. This certificate provides a summary of proposed development options for the planned 2,250-tonne-per-day mine and mill. Included are baseline and mitigation studies, access and infrastructure issues, socio-economic impact and benefits. Environmental studies are also in progress, and geotechnical drilling is under way to evaluate proposed tailings and building sites. Also in progress are metallurgical test work, investigations of rock mechanics, and preliminary mine engineering.
At last report, minable reserves stood at 7.7 million tons grading 6.42% zinc, 1.4% copper, 1.07% lead, 0.07 oz. gold and 2.72 oz. silver per ton. Redfern has been carrying out an underground drill program, which includes both infill and step-out holes. A recent hole, 94-65, intersected a thick and high-grade portion of the H lens, which the company expects “will substantially improve the existing reserve in an area of lower drill density. The hole returned a 44.4-ft. thickness (from 1,335.5 to 1,379.9 ft.) grading 2.92% copper, 1.15% lead, 11.65% zinc, plus 0.095 oz. gold and 3.41 oz. silver.
A number of step-out holes were drilled to test for extensions of known lenses. Selected results include: 10.6 ft. of 0.43% copper, 0.73% lead, 2.63% zinc, plus 0.046 oz. gold and 1.79 oz. silver; and 10.7 ft. of 0.74% copper, 0.75% lead, 2.65% zinc, plus 0.081 oz. gold and 4.80 oz. silver. The surface drilling under way is aimed at testing for an inferred new mineral zone immediately west of the main Tulsequah Chief deposit. Assays are not yet available.
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