Genco Resources Ltd.
TSX : GGC

Genco Resources Ltd.

March 12, 2008 12:59 ET

Genco Announces Results From the Open Pit Creston Bulk Tonnage Target

VANCOUVER, BRITISH COLUMBIA--(Marketwire - March 12, 2008) - Genco Resources Ltd. (TSX:GGC) announces results from the companies drill program focused on the open pit Creston bulk tonnage target at La Guitarra Silver/Gold mine, Mexico State, Mexico. Highlights include holes GRH-94 with 50 metres grading 74 grams per tonne ("g/t") silver 0.34 g/t gold and 90 silver equivalent ("eAg") g/t and GRH-91 with multiple intercepts including 18 metres grading 249 g/t silver and 0.24 g/t gold.



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Creston Bulk Tonnage Target Mineralized Drilling Intersections
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Drill Hole From To Interval Au g/t Ag g/t eAg g/t
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GRH-75 39.0 51.0 12.0 0.18 114 123
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and 59.7 62.7 3.0 0.40 104 123
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and 85.2 100.2 15.0 0.27 45 59
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GRH-76 Low Grade
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GRH-77 142.4 155.9 13.5 0.32 22 38
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GRH-78 143.8 152.8 9.0 0.07 34 37
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GRH-79 37.0 43.0 6.0 0.65 43 76
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and 65.5 77.5 12.0 0.16 21 29
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GRH-80 43.1 65.6 22.5 0.63 69 100
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GRH-81 38.6 47.6 9.0 0.07 59 62
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and 61.1 77.6 16.5 0.59 47 77
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and 80.6 97.1 16.5 0.75 15 52
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GRH-82 38.8 61.3 22.5 0.68 61 95
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GRH-83 Low Grade
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GRH-84 Low Grade
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GRH-85 25.2 35.7 10.5 0.28 30 44
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GRH-86 68.5 83.5 15.0 0.30 50 65
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GRH-87 35.7 58.2 22.5 0.21 33 43
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GRH-88 83.5 104.5 21.0 0.21 54 65
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GRH-89 127.0 136.0 9.0 0.72 61 97
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GRH-90 2.5 26.5 24.0 0.97 45 93
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GRH-91 2.1 32.1 30.0 0.43 62 83
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and 34.1 36.1 2.0 0.79 222 261
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and 38.1 56.1 18.0 0.24 249 261
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and 76.0 84.0 8.0 0.17 57 66
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GRH-92 17.1 33.1 16.0 0.71 50 86
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GRH-93 34.0 45.0 11.0 0.16 69 77
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GRH-94 2.0 52.0 50.0 0.34 73 90
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GRH-95 Low Grade
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GRH-96 28.0 45.0 17.0 0.50 128 153
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and 68.0 77.0 9.0 0.06 35 38
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and 142.0 158.0 16.0 0.41 51 71
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GRH-97 Abandoned in Mine Dump, Dump Averages 33 g/t eAg
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GRH-98 Abandoned in Mine Dump, Dump Averages 40 g/t eAg
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GRH-99 Abandoned in Mine Dump, Dump Averages 32 g/t eAg
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GRH-100 93.4 113.4 20.0 less
than 0.05 32 32
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and 120.4 127.4 7.0 1.19 69 129
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GRH-103 49.2 65.7 16.5 0.78 44 83
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GRH-104 30.9 50.4 19.5 0.38 30 49
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GRH-105 34.0 56.5 22.5 0.34 28 45
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and 62.5 73.0 10.5 0.31 42 58
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GRH-106 4.0 29.5 25.5 0.41 76 97
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GRH-107 Low Grade
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GRH-108 Low Grade
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GRH-109 41.4 47.4 6.0 1.15 68 125
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GRH-110 35.5 41.5 6.0 0.32 73 89
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and 43.0 50.5 7.5 0.89 38 83
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GRH-111 14.5 22.0 7.5 0.32 100 117
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GRH-112 Low Grade
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GRH-113 94.1 104.6 10.5 0.21 63 73
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GRH-114 Low Grade
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GRH-116 2.5 13.0 10.5 1.18 57 116
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GDH-118 21.0 35.0 14.0 0.17 112 121
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GDH-119 50.9 56.5 5.6 0.26 185 198
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GDH-133 96.0 120.0 24.0 7.66 290 673
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GDH-134 144.5 150.9 6.4 0.33 32 48
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and
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GDH-138 63.1 86.0 22.9 0.88 94 138
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95.5 107.7 12.2 0.11 34 40
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GDH-141 43.0 54.5 11.5 0.17 49 57
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GDH-143 Low Grade
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GDH-146 185.0 194.8 9.8 0.30 13 28
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GDH-148 Low Grade
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ODH-152 Low Grade
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GDH-154 8.8 38.8 30.0 0.16 110 118
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GDH-155 43.3 60.3 17.0 0.17 21 29
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GDH-156 45.2 67.0 21.8 0.34 32 49
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True-widths range between 70% and 100%.


The eAg grades are calculated using a 50:1 silver to gold ratio ($550/oz Gold and $11/oz silver and metallurgical test work which shows similar recoveries for both gold and silver). GRH holes were drilled using reverse circulation methods, GDH using conventional diamond core drill rigs.

Genco President, Gregory K. Liller, states, "Drilling on the Creston bulk tonnage silver/gold deposit continues to deliver consistently good results. The average grade of holes drilled to date is approximately 112 g/t eAg or greater than 3 1/2 ounces per tonne silver. This is quite good grade for an outcropping bulk tonnage deposit. As we obtain more data on the geometry of the Creston it is becoming readily apparent that for most of its strike length, the Creston deposit forms the dip slope of a hill side. This should result in a relatively low strip ratio for at least a portion of the envisioned open cut operation. To quantify this, computer modeling of the deposit has begun. This modeling will give us data we need for completing our feasibility study and fine tuning project economics."

The qualified person responsible for technical data reported in this news release is Glenn R. Clark P.Eng. of Glenn Clark and Associates Limited. He is arm's length to Genco and has verified the data disclosed.

Quality Control & Assurance

Genco has implemented a quality assurance and control (QA/QC) program to ensure sampling and analysis of all exploration work is conducted in accordance with the best possible practices. Samples from the reverse circulation drill rig are split with a riffle splitter and two equal parts retained. The drill core is split or sawn in to two equal parts. One set of sample splits are shipped to the ALS Chemex Laboratories in Guadalajara Hermosillo, Mexico, for preparation of pulps, the other set of samples is retained on site. The prepared pulps are the shipped to ALS Chemex's Vancouver, B.C. Canada, laboratory for analysis using a gravimetric fire assay for silver and gold. ALS Chemex's laboratory re-assays about 3% of all samples as a check and additional checks may be run on anomalous values. The La Guitarra mine laboratory has an ongoing check assay program and routinely re-assays ALS Chemex's pulp and sample rejects and/or retained core/reverse circulation splits.

Genco is a primary silver producer in Mexico, whose core assets are multiple mining sites, including La Guitarra Mine located in its wholly-owned Temascaltepec Mining District of central Mexico.

The Toronto Stock Exchange does not accept responsibility for the adequacy or accuracy of this release.

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