The Wolf-Tungsten (Mar-Tungsten) Zone resource estimation is based on information from 120 drillholes totaling 17,825m. The results of the resource estimation provided a CIM classified Indicated Mineral Resource of 12.7Mt of material with 0.31% WO3 and an additional Inferred Mineral Resource of 1.3Mt of material with 0.30% WO3 both using a 0.1% WO3 cut-off. The quality of the Mar-Tungsten Zone drilling and data is very good and the Mineral Resource was classified mainly according to the general drillhole spacing. Mine life is estimated to be 11 years; one year of preproduction and ten years of mining. Mill production was estimated to 1Mt/y and the open pit waste to minable resource strip ratio is 6.7 to 1.
3 diamond drill holes have been drilled after the Resource estimation in 2017 for 590.60 metres.
123 diamond drill holes: 18,415.20m Exploration drilling to date has delineated a zone of tungsten mineralization along 800m of strike length and 300m down dip. The deposit remains unconfined in nearly all directions.
Table 1: Mar-Tungsten Zone Mineral Resource Statement
| Resource Category | %WO3 Cut-off | Total Mt | %W03 Grade | Contained WO3 (Mlbs) |
|---|---|---|---|---|
| Indicated | 0.10 | 12.7 | 0.31 | 86.2 |
| Inferred | 0.10 | 1.3 | 0.30 | 8.9 |