MANSFIELD MINERALS INC.

Mansfield Minerals announced it has received an updated resource estimate from AMEC Americas Limited on its 100% owned Lindero oxide gold deposit located in northwestern Argentina. Significantly, for the measured and indicated category at a cut off grade of 0.30 grams/tonne, the new estimate shows an increase in gold grade of 6.7% over those of the previous (June 2008) estimate at 1.96 Moz while the number of ounces reduced by 6.2%. AMEC’s decision to emphasize the cut-off at 0.3 grams/tonne versus 0.45 grams/tonne as stated in the previous estimate is a function of increased confidence in project metrics as the prefeasibility study progresses.