Expedition Completes Airborne Electromagnetic Survey on Joy and Mt. Mervyn Properties in Rackla Gold Belt

VANCOUVER, BRITISH COLUMBIA--(Marketwire - June 20, 2011) - Expedition Mining Inc. (TSX VENTURE:EXU) -

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Expedition Mining Inc. (the "Company") is pleased to announce the completion of 1073 line-km of high-resolution, airborne time-domain electromagnetic and magnetic surveys over the Joy and Mt. Mervyn properties. Both the Joy and the Mt. Mervyn properties lie in the Rackla Gold Belt, a newly discovered gold district hosting ATAC Resources' Rau property which contains drill-confirmed "Carlin-type" gold mineralization.

Complete coverage at 100 m line spacing of the two properties was flown with the SkyTEM helicopter-borne system, comprising 356 line-km on the Joy and 717 line-km on the Mt. Mervyn. Preliminary results from the airborne survey suggest that both properties contain significant east-west trending structural zones located between and parallel to the Kathleen Lake fault and the Dawson thrust. These structural features appear to bound the rock units hosting mineralization at Rau and Osiris. Several north-south features have also been identified that intercept the large scale east-west structural zones. These are interpreted to be late-stage faults similar in setting to those hosting mineralization at the Osiris Showing. Additionally a magnetic signature associated with a mapped ultramafic unit on the Joy property both delineates a large east-west structural zone and offers listwanite-hosted gold as a secondary target type. These geophysical anomalies will be followed-up with focused geochemical surveys and geological mapping during the 2011 summer exploration program. The surface exploration programs are designed to rapidly advance any new discoveries to the drilling stage.

Information with respect to the Joy and Mt. Mervyn properties contained in this news release is approved by Bert W. Jeffries, PGeo, a qualified person required under National Instrument 43-101.

Expedition is a publicly held Canadian exploration company focused on acquiring, exploring and developing gold properties located in favourable geo-political climates. The company is led by a highly skilled, experienced board and management team with significant successes in managing early stage mineral exploration companies. For additional information concerning Expedition Mining Inc. or its various exploration projects please visit Expedition's website at www.expeditionmining.com.

ON BEHALF OF THE BOARD:

Ronald Atlas, President & Chairman of the Board

Expedition Mining Inc.

CAUTION REGARDING FORWARD LOOKING STATEMENTS:

This news release contains "forward-looking statements" within the meaning of the United States Private Securities Litigation Reform Act of 1995 and applicable Canadian securities legislation. Generally, these forward-looking statements can be identified by the use of forward-looking terminology such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "can", "could", "would", "might" or "will be taken", "occur" or "be achieved". Forward-looking statements are subject to known and unknown risks, uncertainties and other factors that may cause the actual results, level of activity, performance or achievements of Expedition Mining to be materially different from those expressed or implied by such forward-looking statements, including but not limited to: risks related to the exploration and potential development of its properties, the actual results of current exploration activities, conclusions of economic evaluations, changes in project parameters as plans continue to be refined, future prices of gold. Although Expedition Mining has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking statements, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. Expedition Mining does not undertake to update any forward-looking statements that are incorporated by reference herein, except in accordance with applicable securities laws.

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