Augusta Resource Corporation: Superior Court Rules in Favor of Rosemont on Air Permit Appeal

Denver, Colorado--(Newsfile Corp. - July 10, 2012) - Augusta Resource Corporation (TSX/NYSE MKT: AZC) (“Augusta” or “the Company”) is pleased to announce that the Arizona Superior Court for Pima County (“Court”) has ruled in the Company’s favor regarding its appeal of Pima County Air Quality Control District (“Control District”) and Pima County Air Quality Hearing Board’s (“Hearing Board”) denial of Rosemont’s Air Permit application.

The Court Ruling, dated July 5, 2012, determined that both the Control District and the Hearing Board “acted in an arbitrary and capricious manner and that the [Control District and Hearing Board] abused their discretion.” The ruling directed the Control District to process Rosemont’s application in a timely manner; moreover, it further supports Rosemont’s decision to apply for an Air Permit processed by the Arizona Department of Environmental Quality (“ADEQ”).

“This ruling is certainly a positive win for Rosemont,” said Rod Pace, Augusta’s Chief Operating Officer. “There was no doubt that we were being treated unfairly and uniquely in Pima County. The Court made the right decision to order Pima County to allow Rosemont to be treated justly. Notwithstanding, we will continue to work with the ADEQ to ensure the Rosemont Air Permit gets processed expeditiously.”

About Augusta

Augusta is a base metals company focused on advancing the Rosemont Copper deposit near Tucson, Arizona. Rosemont hosts a large copper/molybdenum reserve that would account for about 10% of US copper output once in production in 2014 (for details refer to www.augustaresource.com). The exceptional experience and strength of Augusta’s management team, combined with the developed infrastructure and robust economics of the Rosemont project, propels Augusta to becoming a solid mid-tier copper producer. The Company trades on the Toronto Stock Exchange and the NYSE MKT under the symbol AZC.

Contact Information
Augusta Resource Corporation
Letitia Cornacchia, Vice President,
Investor Relations and Corporate Communications
Tel: (416) 860 6310
Email: lcornacchia@augustaresource.com

CAUTIONARY STATEMENTS REGARDING FORWARD LOOKING INFORMATION

Certain of the statements made and information contained herein may contain forward-looking statements within the meaning of the United States Private Securities Litigation Reform Act of 1995 and forward-looking information within the meaning of applicable Canadian securities laws. Such forward-looking statements and forward-looking information include, but are not limited to statements concerning: the Company’s plans at the Rosemont Project; estimated production; and capital and operating and cash flow estimates. Forward-looking statements or information include statements regarding the expectations and beliefs of management. Often, but not always, forward-looking statements and forward-looking information can be identified by the use of words such as “plans”, “expects”, “is expected”, “budget”, “scheduled”, “estimates”, “forecasts”, “intends”, “anticipates”, or “believes” or the negatives thereof or variations of such words and phrases or statements that certain actions, events or results “may”, “could”, “would”, “might” or “will” be taken, occur or be achieved. 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: history of losses; requirements for additional capital; dilution; loss of its material properties; interest rates increase; global economy; no history of production; speculative nature of exploration activities; periodic interruptions to exploration, development and mining activities; environmental hazards and liability; industrial accidents; failure of processing and mining equipment; labour disputes; supply problems; commodity price fluctuations; uncertainty of production and cost estimates; the interpretation of drill results and the estimation of mineral resources and reserves; legal and regulatory proceedings and community actions; title matters; regulatory restrictions; permitting and licensing; volatility of the market price of Common Shares; insurance; competition; hedging activities; currency fluctuations; loss of key employees; as well as those factors discussed in the section entitled “Risk Factors” in the Company’s Annual Information Form dated March 19, 2012. 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 or information. Accordingly, readers are advised not to place undue reliance on forward-looking statements or information. The Company disclaims any intent or obligation to update forward-looking statements or information except as required by law, 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.