MARI Marimaca Copper Corp

Coro Mining Corp. ("Coro" or the "Company") (TSX:COP) is pleased to announce
that it has submitted an update to its approved Environmental Impact Study
("EIS") to the government of Mendoza, Argentina, in relation to the San Jorge
Bi-provincial Leach Project ("the SJBP Leach Project"). The results of the
Company's Preliminary Feasibility Study for this Project were announced in our
news release dated March 5th 2012.


The SJBP Leach Project comprises a rock quarrying operation in Mendoza province
together with a processing plant located in San Juan province, for the
production of up to 25,000 tonnes per year of copper in cathode. The update
describes the impacts and operation of the proposed railway line to transport
ore from the San Jorge quarry to a planned solvent extraction/electro-winning
plant located in San Juan. The aspects of the approved EIS related to the
original San Jorge flotation project are unchanged and will be held in abeyance
until such time as that project is able to proceed. The Company is confident
that the SJBP Leach Project can be executed in an environmentally responsible
manner to the lasting economic and social benefit of the Provinces of Mendoza
and San Juan. In addition, the project has the potential to more than satisfy
Argentina's current consumption of copper, and thus could be developed in
accordance with the country's policy of reducing imports.


Alan Stephens, President and CEO of Coro commented, "The SJBP Leach Project can
be operated in full compliance with all existing laws and regulations in both
provinces, and applicable royalties will be paid to the province of Mendoza.
Additionally, as no mineral processing will take place in Mendoza, no substances
banned by the 7722 law will be employed there. We look forward to the
expeditious approval of this simple update by the Mendoza authorities, so that
we can then prepare and submit a further EIS for the proposed plant facilities
in San Juan province. For clarification, San Jorge is located at an elevation of
approximately 2,600m and is not in the high Andes; therefore it will not be
affected by the recent Argentinean legislation designed to protect the country's
glaciers."


San Jorge Legal Update

As stated in our news release of April 17th 2012, the Company requested that
Oikos, a local environmental NGO opposed to the project, issue a public
retraction of certain defamatory remarks made by it during the EIS approval
process in 2011 and make a donation to a charity of our choosing. Unfortunately,
no such retraction was forthcoming and so Minera San Jorge has initiated legal
proceedings against Oikos and its representative, Eduardo Sosa, for defamation
and libel, and is seeking consequential damages. Coro maintains its rights to
seek legal redress and compensation from the Mendoza government and certain
other individuals, resulting from the unlawful denial of the ratification of the
Company's valid and approved EIS in August 2011.


The 7722 law, which required the ratification of the Company's approved EIS, is
currently subject to legal challenges of its constitutionality by Coro and
several other parties. These lawsuits are now approaching the final stages of
court proceedings and the Company continues to anticipate a judgment in the
second half of 2012. In the event that the courts find that the law is indeed
unconstitutional, the denial of legislative ratification of the Company's EIS
for the San Jorge flotation project may be deemed to be null and void. 


CORO MINING CORP.

Alan Stephens, President and CEO

About Coro Mining Corp.:

The Company was founded with the goal of building a mining company focused on
medium-sized base and precious metals deposits in Latin America. The Company
intends to achieve this through the exploration for, and acquisition of,
projects that can be developed and placed into production. Coro's properties
include the advanced San Jorge copper-gold project, in Argentina, and the Berta,
El Desesperado, Chacay, Llancahue, and Celeste copper exploration properties
located in Chile.


This news release includes certain "forward-looking statements" under applicable
Canadian securities legislation. Such forward-looking statements or information,
including but not limited to those with respect to the prices of copper,
estimated future production, estimated costs of future production, permitting
time lines, legal challenges and proceedings, involve known and unknown risks,
uncertainties, and other factors which may cause the actual results, performance
or achievements of the Company to be materially different from any future
results, performance or achievements expressed or implied by such
forward-looking statements or information. Such factors include, among others,
the actual prices of copper, the factual results of current exploration,
development and mining activities, changes in project parameters as plans
continue to be evaluated, as well as those factors disclosed in the Company's
documents filed from time to time with the securities regulators in the
Provinces of British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, New
Brunswick, Nova Scotia, Prince Edward Island and Newfoundland and Labrador.

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