Great Western Mining Corporation PLC announced highly encouraging initial metallurgical results from bench-scale flotation test work on run-of-mine material from its Defender Tungsten Project in Nevada, USA. Testing recovered 92.98% of the tungsten from pre-treated material into a rougher concentrate grading 7.21% WO3, compared with a starting bulk sample grade of 0.35% WO3. The work was carried out by Eriez Flotation Division of Pennsylvania on a 750 kg representative bulk sample collected across approximately 1 km of strike between the Defender Mine in the east and the Dough God and Pine Crow mines in the west. An initial sulphide flotation stage removed sulphide contaminants into a float stream representing just 3.97% of total mass while retaining 99.46% of the tungsten, after which the primary recovery stage pulled only 4.55% of total mass while recovering 92.98% of the remaining tungsten. CEO Ed Loye called the results an excellent early milestone, noting very low levels of deleterious elements such as molybdenum, and said the clean, low-volume rougher concentrate will serve as feed for cleaner circuit optimisation tests aimed at reaching potential marketable product specifications.
Great Western Mining Corp PlcInitial metallurgical test work recovered 92.98% of tungsten from its Defender project bulk sample, an encouraging R&D milestone toward marketable product specs.
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