Marifil Mines Adopts Shareholder Rights Plan

Marifil Mines Adopts Shareholder Rights Plan

Spokane, WA US, May 01, 2008 /FSC/ - Marifil Mines Ltd. (MFM - TSX Venture, MFMLF - OTCBB_Pink_Sheets), is pleased to announce that its board of directors has adopted a shareholder rights plan. The rights plan is effective immediately and is subject to approval by shareholders of the Company at the annual general meeting to be held on May 29, 2008.  The rights plan is also subject to the approval of the TSX Venture Exchange. Marifil Mines is not aware of any pending or threatened take-over bid for the Company. This plan is similar to rights plans adopted by other Canadian companies that have been approved by shareholders.

The purpose of the rights plan is to protect Marifil Mines' shareholders from unfair abusive or coercive take-over strategies, including acquiring control of the Company through a take-over bid that does not treat all shareholders equally or fairly. The shareholder rights plan will ensure that shareholders have adequate time to properly assess the merits of any proposed take-over bid or similar transaction involving the shares of the Company without undue pressure. It will also encourage the development of alternative transactions or competing take-over bids under the circumstances and will give the directors adequate time to fully consider each option.

On the occurrence of certain triggering events, including a non-permitted bid, the rights will entitle shareholders (other than those held by the acquiring person or group) to acquire shares at a 50 percent discount to the market price. A non-permitted bid would include the acquisition by a person or group of 20 percent or more of the votes attached to all outstanding voting shares of the Company in a transaction not approved by the board of directors. The rights are not triggered by a purchase of shares made due to a permitted bid, which is a take-over bid made to all holders of shares on identical terms. A permitted bid must be made by way of a take-over bid circular prepared in compliance with applicable securities law and must comply with certain other conditions.

About Marifil Mines Ltd.
Marifil Mines Ltd. is a Canadian mineral exploration company listed on the TSX Venture Exchange under the symbol MFM with approximately 31.8 million shares issued and outstanding. Marifil operates under a Joint Venture Model whereby the company acquires properties, adds value by geologic mapping, trenching, geophysics, and/or drilling and then seeks qualified partners to earn their interest by advancing the property to production. Castillian is earning an interest in the Las Aguilas Nickel-Copper-PGM Project in Argentina from Marifil Mines Ltd.

For Further Information Contact:

Head Office:
John Hite, President
Phone: 509.466.1505
Email: info@marifilmines.com
Website: www.marifilmines.com

Investor Relations:
Anthony Srdanovic, Ascenta Capital Partners Inc.
Phone: 604.684.4743 ext. 242
Toll Free: 1.866.684.4743 ext. 242
Email: anthony@ascentacapital.com

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

Forward Looking Statements
This document may contain or refer to forward looking information based on current expectations, including, but not limited to, mineralization projections and similarities drawn to other deposits, estimates regarding the timing for resource modeling, future drill programs and the preparation of a 43-101 compliant technical report. Forward-looking statements are subject to significant risks and uncertainties, and other factors that could cause actual results to differ materially from expected results. These forward-looking statements are made as of the date hereof and we assume no responsibility to update or revise them to reflect new events or circumstances.




Source: Marifil Mines Ltd. (MFM - TSX-V) (MFMLF - Pink Sheets) http://www.marifilmines.com
Maximum News Dissemination by Filing Services Canada Inc.
Ph: (403) 717-3898  Fx: (403) 717-3896    www.usetdas.com