Colombian Mines Corporation
TSX VENTURE : CMJ

Colombian Mines Corporation

May 15, 2008 07:30 ET

Colombian Mines Corporation: Cerro de Cobre Channel Samples Return 22.8 Meters Averaging 3.16% Copper and 15.3 g/t Silver

VANCOUVER, BRITISH COLUMBIA--(Marketwire - May 15, 2008) - COLOMBIAN MINES CORPORATION ("Colombian Mines" or "the Company") (TSX VENTURE:CMJ) is pleased to announce the exploration results from its Cerro de Cobre Copper Project, where channel sampling has returned 22.8 meters averaging 3.16% copper and 15.3 g/t silver in outcrop at the Way Tunnel copper prospect. These results confirm the presence of a high grade sediment-hosted copper system with significant silver mineralization (Table 1).

Geologic mapping in the property area has identified a limestone dominated sedimentary sequence cut by a northeast trending structural zone that controls much of the known mineralization. Secondary structural controls that may influence mineralization include the northeast trending El Diamante anticline and portions of the regional La Colonia thrust fault. Locally, outcrop exposures and underground prospecting tunnels on the property have provided an initial basis for the geologic mapping and rock sample geochemistry. Copper mineralization is consistently associated with chalcopyrite cemented carbonate breccias with calcite and quartz gangue. The Company's rock sampling at Cerro de Cobre utilized a series of continuous channel samples cut from surface outcrop and within the historic tunnels.

Individual sample results at the Way Tunnel copper prospect range up to 8.89% copper and 29.1 g/t silver. The continuous channel samples shown in Table 1 below were taken both across and along the mineralized zone as allowed by exposure. Based on mapping, sampling and historic data, the Company estimates an approximate true thickness of 10 meters for the target zone in this area.



Table 1: Way Tunnel Copper Occurrence Channel Samples
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Sample Number Sample Interval (m) Cu% Ag g/t
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CP63 1.6 3.10 15.0
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CP64 2.5 2.19 14.3
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CP65 0.6 0.24 3.3
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CP66 2.0 1.52 12.3
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CP67 2.0 6.42 21.3
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CP68 2.0 3.84 18.3
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CP69 2.0 2.65 16.2
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CP70 2.5 1.62 5.0
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CP71 1.9 2.21 11.5
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CP72 2.0 3.32 25.7
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CP73 1.8 0.53 5.5
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CP74 1.9 8.89 29.1
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Total Interval 22.8 3.16 15.3
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Channel sampling at the Ladino Tunnel, 500 meters southwest of the Way Tunnel on the projected structural trend, returned 5.2 meters averaging 2.23% copper from similar host rocks. Other prospect tunnels and outcrop exposures in the immediate area also produced significant copper values as shown in Table 2 and the geologic map on the company's website.



Table 2: Summary of Cerro de Cobre Property Sample Results
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Sampled Interval Average Grade Average Grade
Location / Sample Area (meters) (Cu%) (Ag g/t)
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Main Cerro de Cobre Zone sample results
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Way Tunnel Copper Mine 22.8 3.16 15.23
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Ladino Tunnel 5.2 2.23 6.05
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Copper Mine Tunnel 8.0 0.38 1.34
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Off Trend sample results
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Unnamed outcrop 10.8 0.47 3.13
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Crest tunnel 3.8 0.66 1.85
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Crest tunnel 5.3 0.30 8.61
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Comments on Sampling, Assaying, and QA/QC

Colombian Mines Corporation's geochemical samples were collected in accordance with accepted industry standards. The samples were submitted to BSI Inspectorate laboratories in Medellin, Colombia for sample preparation and Reno, Nevada (ISO 9001:2000) for analysis as well as SGS laboratories in Lima, Peru for both preparation and analysis (ISO 9001:2000). The copper and silver analyses were determined by ICP techniques. As standard procedure, the Company conducts routine QA/QC analysis on all assay results, including the systematic utilization of certified reference materials, blanks, field duplicates, and umpire laboratory check assays.

Colombian Mines is focused on the acquisition, exploration and development of high quality mineral properties with near to intermediate term production potential in Colombia. Colombia is widely recognized as a highly prospective, yet under-explored country with excellent discovery potential.

Mr. Robert G. Carrington, P.Geo., a Qualified Person as defined by National Instrument 43-101 and President of the Company, has reviewed and verified the technical information contained in this news release.

A project description and geologic map showing the sample areas may be viewed on the Company's web site at www.colombianmines.com.

Robert G. Carrington, President Colombian Mines Corporation

Forward-Looking Statement

Some of the statements in this news release contain forward-looking information that involves inherent risk and uncertainty affecting the business of Colombian Mines Corporation. Actual results may differ materially from those currently anticipated in such statements.

The TSX Venture Exchange does not accept responsibility for the adequacy or accuracy of this release.

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