SEMAFO Intersects 7.83 g/t Gold Over 13 Meters on Kona at Mana

New Exploration Permit Extends Structural Corridor to 115 Kilometers

SEMAFO TSX-SMF

MONTREAL, May 4 /CNW Telbec/ - SEMAFO (TSX: SMF) today provided an update on the reverse circulation ("RC") drilling currently underway on the Kona Zone at the Mana property in Burkina Faso. Results to date confirm the continuity of the Kona mineralization from the Wona NE1 reserves pit for more than one kilometer, which remains open on strike and at depth.

SEMAFO is also pleased to announce receipt of a new exploration permit, called Saoura, at Mana in Burkina Faso. This additional land, adjacent to SEMAFO's Massala permit, covers 247.5 km2 and takes our total footprint over the Hounde belt to 1,880 km2. The Saoura land provides for a potential extension of the Oula aeromagnetic anomaly (Figure 1), increasing our position on the structural corridor from 90 kilometers to 115 kilometers.

    
    Kona Reverse Circulation Drilling Results
    -----------------------------------------
    

During the first quarter, we completed the initial phase of exploration drilling on Kona (SEMAFO's press release dated April 20, 2010). The Kona Zone was discovered late in 2009 (SEMAFO's press release dated January 25, 2010). A first delineation RC drilling program was carried out in March and April, 2010 using a 100-meter by 50-meter spacing grid. Drilling was performed mainly over the first 100 meters of depth and up to coordinate 19100 N. We drilled 21 holes (2,727 meters) throughout the zone and 17 holes in surrounding areas to explore other potential structures for a total of 38 holes (5,310 meters). The Kona Zone is continuous, but presents some complex curves and some local parallel sub-structures that may increase the ore potential. Kona hosts significant grade-thickness results, suggesting the addition of over one kilometer of open pit ore as demonstrated on figure 2. Moreover, although the mineralization weakens around 19000 N, it resumes at 19100 N, as demonstrated by hole MRC10-026, and remains open toward the Zina Blé area, which is presently undergoing auger and RC drilling. The Kona Zone potential at depth remains open. RC in-fill drilling at Kona will be scheduled prior to year-end with the objective of adding new surface mining reserves.

    
                 Kona Zone Reverse Circulation Intersections
    -------------------------------------------------------------------------
      DDH No.         Zone     Section     From      To      Au / Length*
    -------------------------------------------------------------------------
      MRC10-001    Kona         18100       114     123    1.59 g/t  /  9 m
    -------------------------------------------------------------------------
      MRC10-003    Kona         18200        80      91    2.41 g/t  / 11 m
    -------------------------------------------------------------------------
      MRC10-004    Kona         18200       169     181    2.41 g/t  / 12 m
    -------------------------------------------------------------------------
      MRC10-004    Unknown      18200       158     161    2.89 g/t  /  3 m
    -------------------------------------------------------------------------
      MRC10-004    Unknown      18200       198     201    5.29 g/t  /  3 m
    -------------------------------------------------------------------------
      MRC10-006    Kona         18300        71      76    3.39 g/t  /  5 m
    -------------------------------------------------------------------------
      MRC10-008    Kona         18400        39      72    2.29 g/t  / 33 m
    -------------------------------------------------------------------------
      MRC10-009    Kona         18400       162     172    2.12 g/t  / 10 m
    -------------------------------------------------------------------------
      MRC10-014    Kona         18500        23      34    2.08 g/t  / 11 m
    -------------------------------------------------------------------------
      MRC10-015    Kona         18500       137     144    2.55 g/t  /  7 m
    -------------------------------------------------------------------------
      MRC10-016    Kona         18600        52      54    2.02 g/t  /  2 m
    -------------------------------------------------------------------------
      MRC10-017    Kona         18600       127     135    1.05 g/t  /  8 m
    -------------------------------------------------------------------------
      MRC10-018    Kona         18700        64      77    7.83 g/t  / 13 m
    -------------------------------------------------------------------------
      MRC10-020    Kona         18800        18      22    1.45 g/t  /  4 m
    -------------------------------------------------------------------------
      MRC10-022    Kona         18900        21      26    0.48 g/t  /  5 m
    -------------------------------------------------------------------------
      MRC10-023    Kona         18900       156     158    1.25 g/t  /  2 m
    -------------------------------------------------------------------------
      MRC10-024    Kona         19000        48      50    0.33 g/t  /  2 m
    -------------------------------------------------------------------------
      MRC10-025    Kona         19000       124     131    0.18 g/t  /  7 m
    -------------------------------------------------------------------------
      MRC10-026    Kona         19100        71      73    3.84 g/t  /  2 m
    -------------------------------------------------------------------------
      MRC10-027    Kona         18300        36      37            Tr.
    -------------------------------------------------------------------------
      MRC10-035    Kona         18700        23      35    6.56 g/t  / 12 m
    -------------------------------------------------------------------------
      MRC10-036    Kona         18700       114     131    2.83 g/t  / 17 m
    -------------------------------------------------------------------------
    * All lengths are measured along the hole axis; additional information
      is required to determine true widths.
    

Unknown zones are parallel zones that do not appear on the attached longitudinal section (Figure 2). Further investigation of these zones is underway.

The exploration programs were designed and managed locally by Dofinta Bondé and David Lalonde, Mana Mineral's Exploration Chief Geologists and Richard Roy, P.Geo, Deputy Geology Manager, and guided and supervised under the direction of Michel Crevier, P.Geo MScA, Geology Manager and SEMAFO's Qualified Person who has reviewed this press release for accuracy and compliance with National Instrument 43-101.

All individual samples represent approximately one meter of drilling, split in half for cores and riffled split to obtain one-kilogram samples of RC drill cuttings. A one-kilogram RC sample is kept on site as a control and an equivalent sized sample is sent for preparation and gold assaying at ALS Chemex laboratories in Ouagadougou, Burkina Faso. Each sample is fire assayed for gold content on a 50-gram pulp sub-sample at the same ALS Chemex laboratory. In addition to ALS Chemex's quality assurance/quality control ("QA/QC") program, an internal QA/QC program is in place throughout the sampling program, using blind duplicates, blanks and recognized industry standards.

About SEMAFO

SEMAFO is a Canadian-based mining company with gold production and exploration activities in West Africa. The Company currently operates three gold mines: the Mana Mine in Burkina Faso, the Samira Hill Mine in Niger and the Kiniero Mine in Guinea. SEMAFO is committed to evolve in a conscientious manner to become a major player in its geographical area of interest. SEMAFO's strategic focus is to maximize shareholder value by effectively managing its existing assets as well as pursuing organic and strategic growth opportunities in West Africa.

CAUTION CONCERNING FORWARD-LOOKING STATEMENTS

This press release contains forward-looking statements. Forward-looking statements involve known and unknown risks, uncertainties and assumptions and accordingly, actual results and future events could differ materially from those expressed or implied in such statements. You are hence cautioned not to place undue reliance on forward-looking statements. Forward-looking statements include words or expressions such as "may", "expectation", "objective", "committed", "evolve", "become", "pursuing", "growth" and other similar words or expressions. Factors that could cause future results or events to differ materially from current expectations expressed or implied by the forward-looking statements include the ability to increase the ore potential in the Kona Zone, the ability to complete our RC in-fill drilling program and to add new surface mining reserves by year-end, the ability to find organic and strategic growth opportunities in West Africa, fluctuation in the price of currencies, gold or operating costs, mining industry risks, uncertainty as to calculation of mineral reserves and resources, delays, political and social stability in Africa (including our ability to maintain or renew licenses and permits) and other risks described in SEMAFO's documents filed with Canadian securities regulatory authorities. You can find further information with respect to these and other risks in SEMAFO's 2009 Annual MD&A and other filings made with Canadian securities regulatory authorities and available at www.sedar.com. These documents are also available on our website at www.semafo.com. SEMAFO disclaims any obligation to update or revise these forward-looking statements, except as required by applicable law.

http://files.newswire.ca/867/SemafoKonaMay04.doc

SOURCE SEMAFO INC.

For further information: For further information: Benoit La Salle, President & CEO, SEMAFO, (514) 744-4408, Toll-Free: 1 (888) 744-4408, blasalle@semafo.com; Sofia St Laurent, Communications, SEMAFO, (514) 744-4408, Toll-Free: 1 (888) 744-4408, sstlaurent@semafo.com

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