2007

MANTLE SIGNS DEFINITIVE OPTION AGREEMENT TO EXPLORE MEGASTAR�S BC SEDEX ZINC PROPERTIES

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Vancouver, British Columbia, Canada � Thursday, March 29, 2007 � Mantle Resources Inc. (TSX Venture Exchange: MTS; Frankfurt: A0F7E1) is pleased to announce that further to its news release of February 19, 2007, the Company has now entered into a definitive agreement with Megastar Development Corp. (TSX-V: MDV) pursuant to which Mantle has an option to earn an initial 60% interest in Megastar�s SEDEX zinc properties located in Northeastern British Columbia by spending up to $2.25 million.

Megastar�s 100% owned SEDEX zinc properties are located within an emerging premier zinc-lead district -- namely the highly prospective Gunsteel shale formation in the regionally extensive, world-class Kechika trough sedex zinc basin.� The properties comprise over 18,000 hectares and are situated adjacent to and along strike the favorable geology which is host to several zinc deposits including Mantle�s nearby Akie deposit where drilling has recently intersected high-grade SEDEX style zinc-lead mineralization.

The definitive agreement is subject to regulatory approval. �Mantle will be the operator and can earn a 60% interest in Megastar�s properties as follows:

• Payment to Megastar of $50,000 and the issuance of 50,000 shares of Mantle upon signing a definitive agreement;
  
• The issuance of 50,000 shares of Mantle nine months from signing a definitive agreement;
  
• Payment to Megastar of $100,000 and the issuance of 25,000 shares of Mantle on or before the first anniversary of the signing of the definitive agreement
  
• Spending $2.25 million in exploration and development over a three-year period.

Upon earning a 60% interest, Mantle can increase its interest to 80% by spending an additional $1.0 million on the properties.� Mantle can then earn a further 10% (cumulative 90%) by completing a preliminary feasibility study.

The TSX Venture Exchange has neither approved nor disapproved the contents of this press release.

ON BEHALF OF THE BOARD OF DIRECTORS
MANTLE RESOURCES INC.

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�PEEYUSH VARSHNEY��

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PEEYUSH VARSHNEY