Orvana Exploration (Copperwood)

Since 2008, Orvana has drilled 146 holes for nearly 19,000 metres, which include holes drilled as water monitoring wells as well as for geotechnical and metallurgical studies, covering an area of 3,400 metres by 1,700 metres in the Copperwood leased area.  These holes provide a nominal 150-metre drill spacing for resource and reserve estimates.

Assays were completed by Activation Laboratories Ltd., an ISO/IEC 17025 and CAN-P-1579 registered laboratory. The QA/QC protocol included internal and laboratory standards and blanks. AR-ICP values were determined using an agua regia extraction with an ICP/OES finish. Assay values were determined for samples with Cu > 1000 ppm also using an agua regia extraction with an ICP/OES finish. Even though a statistical analysis show that all results were within acceptable limits, Orvana repeated analyses of selected intervals and standards at another laboratory.

The Company announced in February of 2011 an updated resource estimate for the Copperwood copper project, Upper Peninsula, Michigan, USA. This estimate included the mineralization in the adjacent area, previously referred to as Copperwood S6, and was the basis for the mine plan and design included in the prefeasibility study.  In February, 2012 the Company announced the findings of their NI 43-101-compliant Feasibility Study for the Copperwood copper project, Upper Peninsula, Michigan, USA.
  Copperwood Cross-Sections

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Copperwood Drill Locations

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