Miramar Mining Corporation

Miramar Mining Corporation

September 20, 2007 12:17 ET

Miramar Announces Positive Water License Decision for Doris North

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Sept. 20, 2007) - Miramar Mining Corporation (TSX:MAE)(AMEX:MNG) is pleased to announce today that on September 20, 2007 the Nunavut Water Board ("NWB") issued a positive "decision" on the water license application for the Doris North mine. The NWB has recommended to the Minister of Indian and Northern Affairs Canada (INAC) that a 5 year Type A water license be issued to Miramar Hope Bay Limited covering the construction, operation and ultimate reclamation of the Doris North Project.

"NWB's granting of the license represents a significant milestone for our company and for the communities of the Western Kitikmeot Region that will directly benefit from the Doris North project," said Tony Walsh, President and CEO of Miramar Mining Corporation. "We now look forward to working with the remaining agencies and stakeholders to obtain the final permits and licences required to put Doris North into production. The Doris North water license is a key component to Miramar's evolution into a significant gold producer. We hope and expect that the Doris North project is only the first of several projects from the Hope Bay belt to be presented to the Territory of Nunavut."

The positive license decision is provided in conjunction with terms and conditions, which Miramar will be reviewing and working cooperatively with all stakeholders to fulfill. The NWB has posted its decision along with recommended terms and conditions on its FTP site at www.ftp.nunavut.ca\nwb.

The NWB decision and recommended license has been sent to the INAC minister for approval. This approval is a significant milestone leading towards the start of construction. Other key authorizations still required include: a) a commercial mining lease from the Kitikmeot Inuit Association; b) a royalty agreement with Nunavut Tunngavik Inc. and c) authorizations under the Fisheries Act to allow for the construction and operation of the mine's tailings facility. Discussions on the commercial lease and royalty agreement are well advanced and are not expected to delay the start of construction or production. Environment Canada has initiated proceedings to add the Tail Lake tailings facility to Schedule 2 of the Metal Mining Effluent Regulation (MMER) and this process is expected to be complete by the end of 2007.

Production Timeline

Miramar's targeted production schedule is for Doris North Mine to commence milling operations in late 2008. Site preparation and earthworks are scheduled to be completed over the 2007/2008 winter season to allow for construction of the mill and associated facilities in the summer of 2008. The marine jetty and associated laydown area at Roberts Bay was constructed in the summer of 2007 and is being used to offload construction equipment and materials, the accommodation camp and mill building shipped to site on the 2007 sealift season.

Hope Bay Project

The Hope Bay project is 100% owned by Miramar, extends over 1,000 sq.km. and encompasses one of the most prospective undeveloped greenstone belts in Canada. The belt contains a number of significant gold deposits including the Doris North Project which is anticipated to become the first new gold mine in Nunavut.

For more information on Miramar Mining Corporation and its projects visit our website at www.miramarmining.com.

Forward Looking Statements

Statements relating to permitting and work at the Hope Bay project and the expected results of this work are forward-looking statements within the meaning of the United States Private Securities Litigation Reform Act of 1995. Forward looking statements are statements that are not historical facts and are generally, but not always, identified by the words "expects", "plans", "anticipates", "believes", "intends", "estimates", "projects", "potential" and similar expressions, or that events or conditions "will", "would", "may", "could" or "should" occur. Information inferred from the interpretation of drilling results and information concerning mineral resource estimates may also be deemed to be forward looking statements, as it constitutes a prediction of what might be found to be present when and if a project is actually developed. These forward-looking statements are subject to a variety of risks and uncertainties which could cause actual events or results to differ materially from those reflected in the forward-looking statements, including, without limitation: risks related to fluctuations in gold prices; uncertainties related to raising sufficient financing to fund the planned work in a timely manner and on acceptable terms; changes in planned work resulting from weather, logistical, technical or other factors; the possibility that results of work will not fulfill expectations and realize the perceived potential of the Company's properties; uncertainties involved in the estimation of gold reserves and resources; the possibility that required permits may not be obtained on a timely manner or at all; the possibility that capital and operating costs may be higher than currently estimated and may preclude commercial development or render operations uneconomic; the possibility that the estimated recovery rates may not be achieved; risk of accidents, equipment breakdowns and labour disputes or other unanticipated difficulties or interruptions; the possibility of cost overruns or unanticipated expenses in the work program; the risk of environmental contamination or damage resulting from Miramar's operations and other risks and uncertainties, including those described in the Miramar's Annual Report on Form 40-F for the year ended December 31, 2006 and Reports on Form 6-K filed with the Securities and Exchange Commission.

Forward-looking statements are based on the beliefs, estimates and opinions of Miramar's management on the date the statements are made. Miramar undertakes no obligation to update these forward-looking statements management's beliefs, estimates or opinions, or other factors, should change.

This news release has been authorized by the undersigned on behalf of Miramar Mining Corporation.

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