Mana - Extension Of The Wona Deposit Intersects 3.42 G/T Au Over 50 Meters

Montreal, Quebec, June 13, 2007 - SEMAFO (TSX - SMF) is pleased to provide an update on the 2007 exploration program at the Mana Gold project. During the current year U$3.5M is being invested in exploration at Mana with the objective of increasing reserves and resources.

Semafo has discovered that the Wona deposit, which is advantageously situated in close proximity to the Mana plant, extends in a north-east direction. Drilling has been carried out on the extension showing mineralization, the best result being hole WDC46 returning 3.42 g/t Au over 50 meters, the details of which are noted below. Geophysical work was also carried out, identifying the Wona structure over an additional 3 Km. In light of the positive drill and geophysical results, a new extensive drilling program will take place this summer.    

Semafo's properties in Burkina Faso are within the Hound� volcano-sedimentary belt. As described in previous technical reports, more than one mineralization type were recognized, such as Nyaf� that is a vein type in sheared volcanics and Wona that is meta-sediments hosted. The latter is related to silicification often brecciated and generally proximal to a graphitic horizon.

Early 2007 core drilling program, targeting potential deep extension of both Nyaf� and Wona returned significant potential under the North part of Wona with hole WDC39 (3.94 g/t Au over 11 meters). Furthermore, WDC38 opened the North-East extension of the Wona deposit with 3.94 g/t Au over 10 meters plus 4.34 g/t Au over 9 meters. Hole WDC46 was drilled some 290 meters beyond reserves, returning 3.42 g/t Au (capped at 15 g/t Au, 3.52 uncapped) over 50 meters. RC drilling followed the diamond drill program confirming the mineralized horizon however showing lower grades and thickness near surface. The table below details all intersections crossing the mineralization plane of the extension.  The attached 3D drawing shows in red, the known mineralization hosting Wona pit, in green, the newly discovered extension and in blue, the trend along which exploration will continue. This image demonstrates the former drilling being just off the zone due to a curve in the ore trend. Both core and RC drilling was executed by Boart Longyear.

THIS PRESS RELEASE CONTAINS MAPS.  CLICK HERE TO VIEW ORIGINAL PDF DOCUMENT.

Deeper zones
Hole ID	Coord X	Coord Y	Coord Z	Grade Au(g/t)	Length (meters)
WDC38	13338	16700	5144	3.94	10
	12355	16700	5121	4.34	9
WDC39	12373	16500	5157	3.94	11
WDC46	12311	16900	5076	(capped at 15g/t) 3.42	50
WRC312	12349	16700	5253	2.69	12
	12361	16700	5238	2.58	3
WRC314	12276	16900	5294	1.14	10
	12326	16900	5234	1.31	14
	12331	16900	5228	1.06	4
Note:	Average surface elevation is 5330

Upper zones
Hole ID	Coord X	Coord Y	Coord Z	Grade Au(g/t)	Length (meters)
WRC313	12361	16700	5299	2.30	8
WRC315	12337	16800	5248	1.73	7
WRC63	12362	16700	5325	NV
WRC64	12354	16800	5323	NV
WRC85	12355	16700	5281	2.94	3
WRC90	12319	17000	5297	1.42	4
Note:	Average surface elevation is 5330

 

Based on these positive results, an IP geophysic program was executed by Sagax Afrique, extending to local coordinates 19200N whereby the former survey ended at 16200N. The second image presents residual resistivity results. An �chelon is recognized in the area of recent drilling, with the Wona's signature appearing to continue on the surveyed area. That resistive horizon may correspond to the silicified ore bearing Wona structure. Near surface low grades recently drilled coincide with the resistivity �chelon (16500N to 16900N). Better mineralization may reappear with resuming high signal, still keeping deep potential. Exploration will carry on in this area with an RC program being initiated this summer.

The drilling programs were designed and managed locally by Dofinta Bond�, Mana Mineral's Exploration Chief Geologist and reviewed 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 the Canadian Instrument 43-101.

All individual samples represented one-meter length of drilling which were split in half for core and RC drilling cuttings riffled spit to end to 1 Kg sample. One half core or a 1 Kg RC sample was kept on site as a control and an equivalent sized sample was then sent for preparation and gold assaying at the Abilab laboratories in Ouagadougou, Burkina Faso.  Each sample was fire assayed for gold content on a 50 gram pulp sub-sample at the same Abilab laboratories.  Complementing Abilab's own QA/QC (Quality Assurance / Quality Control) program, an QA/QC program was in place throughout the sampling program, using blind duplicates and recognized industry standards.

Semafo Inc. invites you to participate in a conference call to discuss these results:

Date:	Thursday, June 14, 2007
Time:	8:00 AM (ET)
Tel. local & overseas:	1-514-807-8791
Tel. North America:	1-800-595-8550

The replay will be available as of 11:00 a.m. June 14^th to 11:59 p.m. June 21, 2007 by dialing (877) 289-8525,
passcode 2123 6474#

The common shares of Semafo are traded on The Toronto Stock Exchange under the symbol "SMF".

FORWARD-LOOKING STATEMENTS
This press release contains � forward-looking statements �, including, but not limited to, the statements regarding the Company's expectations as to the market price of gold, strategic plans, future commercial production, production targets, timetables, mine operating costs, fixed assets expenses, mineral reserve estimates and to the company's perspectives. Forward-looking statements express, as at the date of this press release, our estimates, forecasts, projections, expectations and beliefs as to future events or results. Forward-looking statements are reasonable, but involve a number of risks and uncertainties, and there can be no assurance that such statements will prove to be accurate. Therefore, actual results and future events could differ materially from those anticipated in such statements. Factors that could cause results or events to differ materially from current expectations expressed or implied by the forward-looking statements include, but are not limited to, factors associated with fluctuations in the market price of precious metals, mining industry risks, uncertainty as to calculation of mineral reserves, risks related to the grade of reserves, risks related to hedging strategies, risks of delays in construction and requirements of additional financing.

Semafo is a mining company whose mission is to explore, develop and mine
major gold deposits in West Africa.  Semafo currently operates the Kiniero mine in Guinea,
the Samira Hill mine in Niger and is developing the Mana project in Burkina Faso

For more information contact :

SEMAFO:
BENOIT LA SALLE
PRESIDENT & CEO
TEL :  (514) 744-4408
E-MAIL :  BLASALLE@SEMAFO.COM 

RENMARK :
TINA CAMERON : TCAMERON@RENMARKFINANCIAL.COMCHRISTOPHER
CHRISTOPHER WELLS : CWELLS@RENMARKFINANCIAL.COM
TEL. :  (514) 939-3989
FAX : (514) 939-3717
WWW.RENMARKFINANCIAL.COM

MORE EXTENSIVE INFORMATION ON SEMAFO CAN BE FOUND ON OUR HOME PAGE AT HTTP://WWW.SEMAFO.COM