Gold Fields Delivers Positive Feasibility Study for Essakane

Annual production of 300,000 oz/yr at less than $300/oz and 15% IRR

Orezone Resources Inc. (OZN:TSX, AMEX)  and Gold Fields Ltd (GFI: NYSE, JSE, DIFX) are pleased to announce that a NI 43-101 compliant Definitive Feasibility Study (“DFS”) for the Essakane Project in Burkina Faso, West Africa, has been delivered to Orezone as part of a Shareholders agreement which provides for Gold Fields earning a 60% interest in the Essakane Project upon issuance of this DFS. An executive summary of the study that was prepared by GRD Minproc of South Africa will be filed on SEDAR within the next 30 days. Orezone and Gold Fields have 90 days to review the study prior to a final a production decision being made. The permitting process is already underway in Burkina Faso and all permits including a mining convention are expected to be in place prior to making a production decision before the end of the year.

Highlights of the Feasibility Study

Capital Costs

Capital costs have been estimated at US$346.5 million (+/- 15%) to build a 5.4Mtpa CIL plant that will produce an average of 292,000 ounces of gold per year at an average cash cost of US$298 per ounce over an 8.6 year mine life. The stripping ratio is 3.1:1. Power will be provided by a 32MW HFO and diesel power station with an estimated cost of $0.16 per kwh. Summary of the capital expenditures is in Table 1.

Mineral Reserves and Resources

Mineral resources for the Essakane Main Zone have been estimated and constrained within a US$650/oz pit shell as per Table 2. This resource estimate was reviewed by Snowden Mining Industry Consultants (Perth, Western Australia) and was reported in April 2007. It is considered to be compliant with the CIM Definition Standards for NI 43-101 reporting.

For the purposes of the DFS, mine design and production scheduling was completed on a fully optimized US$500/oz design shell using only the Indicated mineral resources. The mineral resources within this design shell are presented in Table 3.

The Probable mineral reserves associated with this surface mine design are 46.4Mt with a diluted (mill feed) grade of 1.78g/t. The mineral reserves are based on cutoff grades of 0.52g/t for saprolite, 0.58g/t for saprock, and 0.62g/t for fresh ores. The average metallurgical recovery over the life of mine is estimated to be 94.6%.

Financial Model

Based on the economic parameters that were determined for the Essakane Project, the surface mine yields average production of 292,000 oz per year for a total of 2,507,000 recovered ounces. Table 4 sets out the financial results using various gold and fuel prices which are the two dominant sensitivities of the project.

*Cash Costs include an assumed 3% net smelter royalty due to the Government of Burkina Faso and would be considered Total Cash Costs by North American mining analysts.

**Total Cash Costs include all captital expenditures and closure costs and would be considered as “Total Costs” by North American mining analysts.

Schedule

Table 5 sets out the project development schedule. Gold Fields has approved a budget of $15million to maintain this schedule up to a production decision by the end of the year.

“The completion of a positive feasibility study is a defining moment for our company and the country of Burkina Faso”, stated Ron Little, Chief Executive Officer for Orezone. “Should a production decision be made, this will be the largest private capital investments in the history of the country and we are very proud to be a part of this process. We are very pleased with the progress of the project, including the current permitting process with the government, and look forward to working with our partners to bring this project to a development decision in a short time frame”, continued Little.

“The Essakane project is a good asset, both from a technical as well as a financial aspect. We look forward to concluding the permitting process thus enabling further commitments to be made” said Jim Komadina, Senior Vice President, Development Projects for Gold Fields.

The Company is also pleased to announce the promotion of Pascal Marquis from VP Exploration to President, and Stephen (Steve) King from VP Technical Services to VP Exploration. Mr. Marquis has been with Orezone for five years and is credited with advancing Essakane from exploration to the feasibility stage prior to Gold Fields assuming management of the project last year. Niel Marotta, is stepping down as VP Corporate Finance but will maintain a consulting role on the Advisory Committee.

Orezone is an explorer and emerging gold producer that holds a 40% interest in Essakane, the largest gold deposit in Burkina Faso, West Africa. The company has a pipeline of advanced and grassroots projects, all located in politically stable areas of West Africa which is one of the world’s fastest growing gold producing regions. Orezone’s mission is to create wealth by discovering and developing the earth’s resources in an efficient and responsible manner.

For further information please contact:

Ron Little Chief Executive Officer rlittle@orezone.com

Pascal Marquis President pmarquis@orezone.com

Phone (613) 241-3699                         Toll Free (888) 673-0663