Augusta Resource Corporation
TSX : AZC
AMEX : AZC
FRANKFURT : A5R

Augusta Resource Corporation

August 27, 2007 09:15 ET

Augusta Announces Rosemont Copper Bankable Feasibility Study Conference Call

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Aug. 27, 2007) - Augusta Resource Corporation (TSX:AZC)(AMEX:AZC)(FRANKFURT:A5R) ("Augusta" or the "Company") is pleased to report it will present results of the Rosemont Copper Bankable Feasibility Study ("FS") and the ongoing Rosemont development plan in a webcast on Wednesday, August 29, 2007. A conference call will be held at 11:00 a.m. EST (9:00 a.m. MT/8:00 a.m. PST) to discuss the FS results. A listen-only webcast will be available on the Company's website at www.augustaresource.com.

A press release containing the results of the Rosemont Copper FS will be available prior to the conference call in the News section of the Company's website. For those wishing to participate in the question and answer portion of the conference call, please utilize the dial-in number below. Additionally, the conference call webcast will be archived for a limited time on the Company's website.

Conference Call Details

Toll Free Dial-in Number (within the US and Canada): 866-334-3876

International Dial-in Number: 416-849-4292

Webcast: http://eventcalls.com/console/console-login?active=yes

Passcode: 0440286

Replay Dial-in: 866-245-6755 or 416-915-1035

Replay Passcode: 366113

ABOUT AUGUSTA RESOURCE CORPORATION - Augusta is a mineral exploration and development company responsibly advancing the Rosemont Copper project in Southern Arizona. The Company's Rosemont property is located in Pima County, approximately 50 kilometers southeast of Tucson, Arizona, and contains a potentially world class open-pit copper/molybdenum/silver ("Cu/Mo/Ag") deposit. Augusta has a solid asset base, proven management team, and is committed to becoming a mid-tier copper producer within five years. The company is traded on the American Stock Exchange and the Toronto Stock Exchange under the symbol AZC, and on the Frankfurt Stock Exchange under the symbol A5R.

ON BEHALF OF THE BOARD OF DIRECTORS

Gil Clausen, President and CEO

CAUTIONARY STATEMENT REGARDING FORWARD LOOKING INFORMATION

Certain of the statements made and information contained herein and in the documents incorporated by reference may contain forward-looking statements or information within the meaning of the United States Private Securities Litigation Reform Act of 1995 and forward looking statements or information within the meaning of the Securities Act (Ontario). Forward-looking statements or information include statements regarding the expectations and beliefs of management. Forward looking statements or information include, but are not limited to, statements or information with respect to known or unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company, or industry results, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements or information. Forward-looking statements or information are subject to a variety of risks and uncertainties which could cause actual events or results to differ from those reflected in the forward-looking statements or information, including, without limitation, risks and uncertainties relating to the Company's plans at its Rosemont Property and other mineral properties, the interpretation of drill results and the estimation of mineral resources and reserves, the geology, grade and continuity of mineral deposits, the possibility that future exploration, development or mining results will not be consistent with the Company's expectations, metal recoveries, accidents, equipment breakdowns, title matters, labor disputes or other unanticipated difficulties with or interruptions in production and operations, the potential for delays in exploration or development activities or the completion of feasibility studies, the inherent uncertainty of production and cost estimates and the potential for unexpected costs and expenses, commodity price fluctuations, currency fluctuations, failure to obtain adequate financing on a timely basis, the effect of hedging activities, including margin limits and margin calls, regulatory restrictions, including environmental regulatory restrictions and liability, the speculative nature of mineral exploration, dilution, competition, loss of key employees, and other risks and uncertainties, including those described under "Risk Factors Relating to the Company's Business" in the Company's Annual Information Form dated March 1, 2007.
Should one or more of these risks and uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those described in forward-looking statements. Accordingly, readers are advised not to place undue reliance on forward-looking statements or information. We do not expect to update forward-looking statements or information continually as conditions change, and you are referred to the full discussion of the Company's business contained in the Company's reports filed with the securities regulatory authorities in Canada and the United States.

Contact Information