March 4, 2013: Vancouver, B.C. – North American Tungsten Ltd. (Stock Profile – TSXV:NTC) reports metallurgical testing and analysis of material from tailings pond 3 are ready to commence. The next phase of the tailings reprocessing plan is ready to begin now that the 2011 and 2012 drilling and modeling program has been completed.
Tailings pond 3 was the primary storage facility for all underground and surface production from 1971 until February, 2007. During this period of operation, mill feed graded considerably higher than current feed, leading to significant amounts of WO3 being discarded as tailings, despite good plant recoveries at the time. The tailings pond has a maximum height of 41 metres, a footprint area of approximately 102,000 square metres and a volume of approximately 2.24 million cubic metres, providing a substantial readily available prospective source of material for reprocessing and resource recovery.
Drilling and conceptual modelling program complete.
A sonic drill program throughout the summer of 2011 and spring of 2012 was conducted to explore the possibility of reprocessing unrecovered WO3, copper and gold from tailings pond 3. The program was designed to establish the approximate tonnage and grade of the available tailings, which were then compared with historical production statistics. A total of 25 holes were drilled with a spacing of approximately 200 feet depending on ground conditions. Tailings samples were acquired at five-foot intervals over the entire length of each hole and assayed at Acme Laboratories, Vancouver. In-house assay work along with preliminary metallurgical work was also conducted on site. A preliminary block model was constructed using Minesight software.
For a block model of the tailings pond – CLICK HERE.