Xtierra Inc. (XAG.V) today announced the results of a 2,032 metre 9-hole programme of infill drilling on the main Bilbao deposit. The objectives of the campaign were to check grade variability and to increase confidence in the resource blocks that would be mined within the first three to four years of underground production.

Conclusions

The recently completed infill drilling has confirmed the continuity of the main mineralization between the previous 50m spaced grid pattern in the core of the Bilbao resource on 25m spacing which may enable some of the resources to be upgraded from indicated to a measured category.

Intersection of the various mineralized horizons during the infill drilling program will enable a refinement of the precise morphology of the main mineralized zone thereby allowing a more accurate tonnage estimate of the resource.

Good to excellent base metal and silver grades have been substantiated in all of the verification drill-holes.

Drill hole Z10 encountered a small extension of the massive sulfide pod in the eastern part of the main mineralized zone although with lower lead-zinc-silver grades but with a stronger copper-gold signature (0.29g/t Au and 0.41% Cu over 6.0m).

There is good overall agreement with grades intersected in the infill drill-holes when compared with those drilled earlier and which were used for calculation of the existing resource estimate. There appears to be a slight increase overall in zinc grades in the infill drill holes compared to earlier drilling.