Results from summer drilling by BYG Natural Resources (TSE) suggest that the former-producing Mount Nansen mine in the central Yukon has increased potential at depth.
BYG has concentrated its activity on the Huestis, Webber and Flex zones, a series of northwest-striking veins. The Webber zone is directly on strike from the Huestis, and the drill program was designed to test the continuity between the two. Together, the zones have a strike length exceeding 1 mile.
The Flex zone lies between Huestis and Webber, and crossses their strike at a shallow angle with roughly the same strike as minor veins that splay from the other two zones. It has a strike length of about half a mile.
Two holes, drilled about 35 ft. northwest of the Huestis workings, intersected continuations of the deposit. Core samples, representing a 6.5-ft. mining width, returned combined gold and silver concentrations equivalent to 0.75 and 0.62 oz. gold per ton.
A hole drilled to intersect the Huestis structure downdip encountered mineralization at 1,200 to 1,600 ft. below surface. The deepest intersection had a combined grade equivalent to 0.14 oz. gold per ton over 17 ft.
The lowest developed level of the mine was 450 ft., and if the mineralized zone is continuous and uniform between 450 and 1,400 ft., the potential reserves are expected to approach 2.5 million tons.
The Flex zone is being drill-tested at shallow levels to determine whether open-pit mining may be possible. Soil geochemical anomalies, including a continuous anomalous zone 2 miles long, have yet to be tested.
BYG is confident that metallurgical difficulties encountered by the previous operator, Mount Nansen Mines, can be solved by adding a cyanide circuit. A building already exists on site for such a circuit.
No difficulties are anticipated in getting full approvals for the project, and the company expects to have all concrete poured before freeze-up. Production is scheduled for the spring of 1996.
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