2007

Mantle Resources Inc. Retains National Media Associates

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Vancouver, B.C. – June 28, 2007 – Mantle Resources Inc. (TSX Venture: MTS; Frankfurt: A0F7E1) (“Mantle” or the “Company) is pleased to announce that it has retained the Los Angeles area firm of National Media Associates (“NMA”) to conduct media awareness and investor relations programs on behalf of the Company. Headed by Mr. George Duggan, NMA is a long-term media-relations specialist in the natural resource sectors.

The Company will pay NMA a monthly fee of US $5,000 for the first four months, then increasing to US $6,000 per month thereafter, for the one-year term of the agreement. The company has the option of cancelling the agreement after the first four months of service, and/or may renew the agreement after the first year of services.  Pursuant to the agreement, Mantle Resources will also grant 200,000 incentive stock options to principals of NMA, set at market price as of July 1, 2007, and good for a three-year term, subject to any required shareholder and regulatory approvals.

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.