McEwen Mining Important Notice for MUX.RT Rights Holders:

McEwen Mining Important Notice for MUX.RT Rights Holders: Time to Use
Subscription Agent to Sell Extended 
TORONTO, ONTARIO -- (Marketwire) -- 11/21/12 -- McEwen Mining Inc.
("McEwen Mining") (NYSE:MUX)(TSX:MUX) announces that in connection
with its ongoing rights offering it has extended the time period for
which holders of MUX.RT are able to use the subscription agent
(Computershare Trust Company N.A.) to sell such rights to 11:00 a.m.
(EST) on Thursday, November 29, 2012. There is no change to the
expiry of the rights offering which remains 5:00 PM (EST) on December
4, 2012.  
In order to provide holders of the MUX.RT subscription rights
additional time to use the subscription agent to sell their MUX.RT
subscription rights the time period has been extended for delivering
such holders' duly executed subscription rights certificate, with
appropriate instructions, to Computershare Trust Company N.A. to
11:00 a.m. (EST) on Thursday, November 29, 2012, from the previous
deadline of 11:00 a.m. (EST) on November 23, 2012. This extension is
being provided due to the delay by certain intermediaries in
providing rights offering materials in a timely fashion. 
If you are a holder of MAQ.RT (Exchangeable Shares) subscription
rights this announcement does not impact you.  
As previously announced, the Rights Offerings will continue to remain
open until 5:00 p.m. (EST) on December 4, 2012. Holders of both
MUX.RT and MAQ.RT subscription rights will need to exercise their
subscription rights prior to that time and date.  
The goal of McEwen Mining is to qualify for inclusion in the S&P 500
by 2015 by creating a high quality, high growth, low-cost, mid-tier
gold producer focused in the Americas. McEwen Mining's principal
assets consist of the San Jose mine in Santa Cruz, Argentina (49%
interest); the El Gallo complex in Sinaloa, Mexico; the Gold Bar
project in Nevada, US; the Los Azules Copper project in San Juan,
Argentina and a large portfolio of exploration properties in
Argentina, Nevada and Mexico. 
This press release contains certain forward-looking statements and
information, including "forward-looking statements" within the
meaning of the Private Securities Litigat
ion Reform Act of 1995. The
forward-looking statements and information expressed, as at the date
of this press release, McEwen Mining Inc.'s (the "Company")
estimates, forecasts, projections, expectations or beliefs as to
future events and results. Forward-looking statements and information
are necessarily based upon a number of estimates and assumptions
that, while considered reasonable by management, are inherently
subject to significant business, economic and competitive
uncertainties, risks and contingencies, and there can be no assurance
that such statements and information will prove to be accurate.
Therefore, actual results and future events could differ materially
from those anticipated in such statements and information. Risks and
uncertainties that could cause results or future events to differ
materially from current expectations expressed or implied by the
forward-looking statements and information include, but are not
limited to, risks related to business integration as a result of the
business combination between the Company and Minera Andes, factors
associated with fluctuations in the market price of precious metals,
mining industry risks, political, economic, social and security risks
associated with foreign operations, risks associated with the
construction of mining operations and commencement of production and
the projected costs thereof, risks related to litigation, property
title, the state of the capital markets, environmental risks and
hazards, uncertainty as to calculation of mineral resources and
reserves and other risks. Readers should not place undue reliance on
forward-looking statements or information included herein, which
speak only as of the date hereof. The Company undertakes no
obligation to reissue or update forward-looking statements or
information as a result of new information or events after the date
hereof except as may be required by law. See McEwen Mining's Annual
Report on Form 10-K for the fiscal year ended December 31, 2011 and
other filings with the Securities and Exchange Commission, under the
caption "Risk Factors", for additional information on risks,
uncertainties and other factors relating to the forward-looking
statements and information regarding the Company. All forward-looking
statements and information made in this news release are qualified by
this cautionary statement. 
The NYSE and TSX have not reviewed and do not accept responsibility
for the adequacy or accuracy of the contents of this news release,
which has been prepared by management of McEwen Mining Inc. 
McEwen Mining Inc.
Jenya Meshcheryakova
Investor Relations
(647) 258-0395 ext 410 or Toll Free: (866) 441-0690
(647) 258-0408 (FAX) 
McEwen Mining Inc.
Mailing Address
181 Bay Street Suite 4750
Toronto, ON M5J 2T3, PO box 792 
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