The cutoff grades used to determine the above mineral resources were 2 grams per ton AuEQ for sulfide mineralization and 3 grams per ton AuEQ for oxide mineralization since the potential costs to extract oxide material may be higher than the cost to process sulfide mineralization.  Approximately 10% of the resource is oxide mineralization and therefore only a minor part of the resource.
 
2009 Tahuehueto 43-101 Mineral Resources
 Mii Area Tonnes(1,000's) g Au/t Oz. Au (1,000's) g Ag/t Oz. Ag (1,000's) Cu% lbs. Cu(1,000's) Pb% lbs. Pb(1,000's) Zn% lbs. Zn(1,000's)
Measured Tahuehueto 3,254 2.40  251 36.30 3,798 0.28  20,439 1.10  79,228 2.07  148,759
Indicated Tahuehueto 4,123 1.87  248 33.92 4,496 0.27  24,900 1.03  93,511 1.96  177,894
Total M&I Tahuehueto 7,377 2.10 498 34.97  8,294 0.28 45,339 1.06 172,738 2.01 326,653
                         
Inferred Tahuehueto 4,868 1.06   31.77   0.23   1.23   2.26  
Cinco de Mayo
Mii Area Tonnes g Au/t Oz. Au g Ag/t Oz. Ag Cu% lbs. Cu Pb% lbs. Pb Zn% lbs. Zn
Measured Cinco de Mayo 423,267 1.81 24,631 42.59 579,566 0.43 4,012,477 1.15 10,731,042 2.00 18,662,682
Indicated Cinco de Mayo 698,416 1.64 36,825 41.02 921,066 0.43 6,620,827 1.20 18,476,728 2.03 31,256,464
Total M&I Cinco de Mayo 1,121,683 1.70  61,455 41.61  1,500,632 0.43 10,633,304 1.18 29,207,770 2.02 49,919,147
                         
Inferred Cinco de Mayo 855,975 1.07   36.83   0.38   1.45   1.84  
El Catorce
 Mii Area Tonnes g Au/t Oz. Au g Ag/t Oz. Ag Cu% lbs. Cu Pb% lbs. Pb Zn% lbs. Zn
Measured El Catorce 374,337 1.29 15,525 30.93 372,240 0.11  907,789 1.09 8,995,360 2.38 19,641,246
Indicated El Catorce 858,037 1.13 31,172 27.00 744,819 0.13 2,459,117 1.14 21,564,565 2.55 48,236,528
Total M&I El Catorce 1,232,374 1.18  46,697 28.19  1,117,059 0.12  3,366,906 1.12  30,559,926 2.50  67,877,774
                         
Inferred El Catorce 2,196,084 0.69   23.29   0.13   1.24   2.60  
El Creston
Mii Area Tonnes g Au/t Oz. Au g Ag/t Oz. Ag Cu% lbs. Cu Pb% lbs. Pb Zn% lbs. Zn
Measured El Creston 1,981,384 2.93 186,645 35.24  2,244,841 0.26 11,357,214 1.08 47,176,119 2.14 93,478,606
Indicated El Creston 1,928,634 2.46 152,534 33.26  2,062,305 0.25 10,629,665 0.90 38,266,794 1.84 78,234,333
Total M&I El Creston 3,910,018 2.70 339,179 34.26  4,307,146 0.26 21,986,879 0.99 85,442,913 1.99 171,712,940
                         
Inferred El Creston 966,468 1.81   33.84   0.26   0.80   1.87  
El Perdido
 Mii Area Tonnes g Au/t Oz. Au g Ag/t Oz. Ag Cu% lbs. Cu Pb% lbs. Pb Zn% lbs. Zn
Measured El Perdido 435,590 1.42 19,886 39.59 554,427 0.37 3,553,114 1.24 11,907,734 1.69 16,229,089
Indicated El Perdido 607,946 1.27 24,823 38.19 746,442 0.37 4,959,030 1.12 15,011,118 1.48 19,836,120
Total M&I El Perdido 1,043,536 1.33  44,709 38.77  1,300,868 0.37  8,512,144 1.17  26,918,852 1.57  36,065,209
                         
Inferred El Perdido 564,772 1.26   37.66   0.39   1.04   1.58  
El Rey
 Mii Area Tonnes g Au/t Oz. Au g Ag/t Oz. Ag Cu% lbs. Cu Pb% lbs. Pb Zn% lbs. Zn
                         
Inferred El Rey 271,260 0.94   65.45   0.17   2.50   3.68  
Santiago
 Mii Area Tonnes g Au/t Oz. Au g Ag/t Oz. Ag Cu% lbs. Cu Pb% lbs. Pb Zn% lbs. Zn
Measured Santiago 39,430 3.06 3,879 36.87 46,739 0.70 608,492 0.48 417,251 0.86 747,575
Indicated Santiago 29,980 2.46 2,371 22.65 21,831 0.35 231,329 0.29 191,672 0.50 =330,470
Total M&I Santiago 69,410 2.80 6,250 30.73 68,571 0.55 839,820 0.40 608,924 0.70 1,078,045
                         
Inferred Santiago 13,025 2.15   16.74   0.27   0.22   0.33  
 
 
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