Genco Resources Ltd.
TSX : GGC

Genco Resources Ltd.

March 25, 2008 09:00 ET

Genco Announces Drill Results From the San Rafael Underground Mine and Construction of a Portable 800 Sample Per Day Assay Lab

VANCOUVER, BRITISH COLUMBIA--(Marketwire - March 25, 2008) - Genco Resources Ltd. (TSX:GGC) is pleased to announce the results from the drilling of underground targets in the San Rafael area of La Guitarra silver/gold mine complex in Mexico State, Mexico. Highlights include GDH-133 with 5.3 metres grading 32.56 grams per tonne ("g/t") gold, 1,220 g/t silver and 2,848 g/t silver equivalent ("eAg") and GDH-149, 1.5 metres grading 23.80 g/t gold, 173 g/t silver, and 1,363 eAg g/t.



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Guitarra Vein - San Rafael Underground Mine
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Drill Hole From To Interval Au g/t Ag g/t eAg g/t
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GDH-119 54.9 56.5 1.6 0.63 540 572
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GDH-120 55.5 56.3 0.8 1.19 298 358
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GDH-121 38 39 1 0.59 439 469
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GDH-122 177 178.5 1.5 0.79 446 486
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GDH-124 42 42.8 0.8 0.46 320 343
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GDH-126 46.3 47.1 0.8 0.20 151 161
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GDH-133 97.7 103 5.3 32.56 1,220 2,848
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GDH-142 87.6 89.1 1.5 less 149 149
than 0.05
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GDH-144 56.6 57.6 1 0.13 130 137
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GDH-146 171.6 173 1.4 1.35 585 653
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GDH-149 50 50.7 0.7 0.33 215 232
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And 57.6 59.1 1.5 0.02 294 295
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And 73.1 74.6 1.5 23.80 173 1,363
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GDH-153 23.5 24.5 1 1.69 268 353
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And 44.35 45.35 1 0.28 321 321
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GDH-158 28.5 30 1.5 0.49 175 200
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And 120.7 121.5 0.8 0.57 113 142
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GDH-163 254.9 256.5 1.6 0.27 143 156
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GDH-165 541 543.6 2.6 2.42 354 475
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GDH-170 118 119 1 3.52 83 259
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GDH-174 109.2 113.2 4 1.73 391.4 478
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And 126.8 127.6 0.8 0.6 220 250
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Note: True-widths range between 70% and 100%.


The eAg grades are based on a 50:1 silver to gold ratio ($550/oz Gold and $11/oz silver). Drill Holes GDH-123, 125, 130, 132, 136, 147, 151, 160, 173 intersected mineralization less than the current 135 g/t eAg underground mine cut off. Drill Holes, GDH-131, 139, 141, 145 and 157 were abandoned before intersecting the projected vein target.

Genco's President, Gregory K. Liller stated, "These drill results are in line with prior drill intersections in the San Rafael area. The results of these drill holes together with previously announced drill hole intersections within the San Rafael mine will be incorporated into the underground mine portion of our 2007 year end resource and reserve estimation. No prior resource or reserve estimates exist for the location of this drilling, so these results will bring new ounces into our resource base."

One significant issue faced by exploration and development projects today is sample turnaround. Current sample turnaround is often in excess of two months from shipment to the lab to receipt of assay results. This is not acceptable to Genco. In order to assist in planning and facilitate the completion of its production expansion project by the end of 2009 Genco's management has commissioned the construction of a portable 800 sample per day fire assay sample preparation laboratory to provide Genco with 24 hour turnaround time. This laboratory is designed to handle both the current assay demands and the expected sample load associated with our planned 3,000 tonne per day ("t/d") mill and proposed 2,000 t/d heap leach operation.

In addition Genco has recently mobilized a LM-55 underground electric core rig and a large Valdor surface core rig to La Guitarra in an effort to improve our hole completion ratio, core recovery and accelerate our drilling program. This brings the total number of drill rigs operating in the district to eight.

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. The drill core is sawn in half with one half being stored on site and the other half shipped to the ALS Chemex Laboratories in Guadalajara, Mexico for preparation of pulps. Pulps are then shipped to ALS Chemex's Vancouver, B.C. Canada laboratory for analysis using a gravimetric fire assay for silver and gold. The laboratory re-assays about 3% of all samples as a check and additional checks may be run on anomalous values. In addition, La Guitarra's mine laboratory has an ongoing check assay program and routinely re-assays ALS Chemex's pulp and sample rejects and/or the retained core splits.

Qualified Person

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 prepared or supervised the preparation of the information that forms the basis for this news release and verified the data disclosed.

About Genco

Genco is a primary silver producer in Mexico, whose core assets are multiple mining sites, including La Guitarra Mine complex 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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