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Hot off the Press!

Nickel North Property Acquired

July 31, 2007

Sedex Mining Corp.

SDN: TSX-V

Nickel North Property Acquired
July 31, 2007

Vancouver, British Columbia, July 31, 2007 – Sedex Mining Corp (TSX-V: SDN) (“Sedex”) is pleased to announce, subject to regulatory approval, the acquisition of a 100% interest in the Nickel North Property, located in the Wilhelmina and Geary Townships, 40 km northwest of Timmins, Ontario.  Consideration for the Property consists of $250,000 payable over two years and 300,000 shares payable over a period of three years.  There is a 2.5% net smelter return payable of which 1.5% may be purchased for $1,000,000.

Sedex has acquired this property and staked a significant land position adjacent to this ground to be called “Nickel North” because the area has the potential for hosting nickel mineralization similar to the Golden Chalice Resources Langmuir Nickel Discovery 30 km south of Timmins where diamond drilling intercepted 72.5 meters of 1.14% nickel.

The property also has the potential for hosting gold and volcanogenic, massive sulphide (VMS) mineralization (copper, zinc, lead and silver).

Geotech Ltd. of Aurora, ON has been contracted to fly their new “B–Field” Unit with their VTEM (Versatile Time-Domain ElectroMagnetics) system for the purpose of developing suitable drilling targets. The survey will comprise approximately 3,000 kilometres of helicopter flying and will commence in the next 30 days.

About Sedex 

Sedex is well positioned to discover and capitalize on world class gold, silver, copper, nickel and zinc deposits.  During the last couple of years the Company has strategically accumulated large land packages in existing mining or mineral districts such as the Abitibi in Ontario.  These properties have existing infrastructure and are often within road access to metallurgical facilities to process mined ores.  Details relating to exploration activities on specific properties will be announced during the coming months as the work program is implemented.

On behalf of the Board of Directors

SEDEX MINING CORP.
/s/ “Richard W. Hughes”
Richard W. Hughes, President

For Further Information Contact: The Hughes Exploration Group
Phone: (604) 685-2222

This document contains certain forward looking statements which involve known and unknown risks, delays and uncertainties not under the corporation’s control which may cause actual results, performance or achievements of the corporation to be materially different from the results, performance or expectation implied by these forward looking statements.

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