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Re:   News - Thursday, June 28, 2012
      12-13 - Cornerstone and Thundermin Retain P&E Mining Consultants
      Inc. to Undertake a NI 43-101 Mineral Resource Estimate for the
      Whalesback Copper Deposit
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Mount Pearl, NL, Canada: Cornerstone Capital Resources Inc.
("Cornerstone") (TSXV-CGP) (F-GWN) (B-GWN) (OTC-CTNXF) and 50% joint
venture partner Thundermin Resources Inc. ("Thundermin") (TSX-THR)
announce that they have retained P&E Mining Consultants Inc. ("P&E") of
Brampton, Ontario to undertake a National Instrument 43-101 ("NI
43-101") compliant mineral resource estimate for the 100% owned,
past-producing Whalesback Copper Mine ("Whalesback"). Recent drilling
completed by Cornerstone and Thundermin at Whalesback has extended the
historical strike length and depth of the deposit (see news releases
dated February 23 and May 10, 2012). The Whalesback mineralization is
expected to increase the total mineral resource available for mining
and enhance the economics of establishing a new copper mining and
milling operation at the adjacent Little Deer Copper Deposit ("Little
Deer") which was estimated by P&E to contain NI 43-101 compliant
Indicated Resources of 1,911,000 tonnes grading 2.37% Cu (99.8 million
pounds of copper) and Inferred Resources of 3,748,000 tonnes grading
2.13% Cu (175.0 million pounds of copper) (see news release dated
December 8, 2011). Whalesback is located approximately 10 km north of
Springdale in north-central Newfoundland and approximately 800 m north
of Little Deer.

The NI 43-101 mineral resource estimate for Whalesback will be based on
assay data from 12 historical surface and 105 historical underground
holes that were recovered from the archives of the Newfoundland and
Labrador Department of Natural Resources in St. John's and 14 recent
holes drilled by Cornerstone and Thundermin. The assay results for most
of these holes were reported previously in releases dated October 20,
2011 and February 23 and May 10, 2012. P&E has already commenced work
and it is anticipated that the mineral resource estimate for Whalesback
should be completed by the end of July.

Borehole Pulse EM at Whalesback

Eastern Geophysics Ltd. has been retained to undertake borehole Pulse
EM surveys on 5-6 of the recently completed drill holes at Whalesback.
Borehole Pulse EM has worked extremely well at Little Deer and the
results of this work will help direct future drilling at depth at
Whalesback. The geophysical work is scheduled to commence around
mid-July once applicable work permits have been received.

Little Deer Copper Property Exploration Plan

A 223 line km helicopter-borne VTEM geophysical survey carried out in
2008 east of the Little Deer and Whalesback copper deposits identified
a number of untested conductors that occur within mafic volcanic rocks
of the Lushs Bight Group, host to Little Deer and Whalesback and the
Little Bay copper deposit located 5 km to the east. Cornerstone and
Thundermin intend to undertake surface time domain EM (TDEM)
geophysical surveys over these conductors and have budgeted for
approximately 2,000 m of follow-up diamond drilling to test the best of
these conductors. This work will be undertaken following the completion
of the borehole Pulse EM program at Whalesback.

Qualified Persons

The mineral resource estimate for Whalesback will be prepared under the
supervision of Mr. Eugene J. Puritch, P. Eng., President of P&E. Mr.
Puritch is an independent Qualified Person ("Q.P.") in accordance with
NI 43-101.

Mr. Andrew Hussey, P.Geo., Project Geologist and Lands Manager of
Cornerstone Resources, is the Q.P. responsible for supervising the
exploration programs at Little Deer and Whalesback for the purposes of
NI 43-101.

Little Deer Joint Venture

Under the terms of its joint venture agreement with Cornerstone,
Thundermin has the right to increase its interest in the Little Deer
property to 75% by completing a feasibility study and by arranging 100%
of the necessary bank financing required to place the property into
commercial production. Details on Little Deer and Whalesback and the
terms of the agreement with Cornerstone can be found in numerous news
releases between May 1, 2007 and May 10, 2012 and on Cornerstone's and
Thundermin's respective websites and on SEDAR.

About Cornerstone:
Cornerstone Capital Resources Inc. is a mineral exploration company
based in Mount Pearl, Newfoundland and Labrador, Canada, with a
diversified portfolio of projects in Canada, Ecuador and Chile, and a
strong technical team that has proven its ability to identify, acquire
and advance properties of merit. The company's business model is based
on generating exploration projects whose subsequent development is
funded primarily through joint venture partnerships. Commitments from
JV partners constitute significant validation of the strength of
Cornerstone's projects.

Cautionary Notice:
Certain statements contained in this press release may be considered as
forward-looking.  Such forward-looking statements are subject to risks
and uncertainties that could cause actual results to differ materially
from estimated or implied results. While Cornerstone anticipates that
subsequent events may cause its views to change, it expressly disclaims
any obligation to update the Forward-Looking Statements contained
herein.

Further information is available on Cornerstone's website:
www.cornerstoneresources.com  or for investor, corporate or media
inquiries, please contact:

Investor Relations:
Email: communications@crigold.com
North America toll-free: 1 (877) 277-8377
Martti Kangas - Direct Line: 1 (647) 521-9261
Paul Benwell / Pat Kairns - Direct Line: 1 (514) 904-1333

The link to a recent Corporate presentation is:
http://www.cornerstoneresources.com/i/pdf/Presentations_0412_CRICorporate.pdf
Investors can also access Cornerstone on Twitter

Cautionary Notice:
This news release may contain 'Forward-Looking Statements' that involve
risks and uncertainties, such as statements of Cornerstone's plans,
objectives, strategies, intentions and expectations.  The words
"potential," "anticipate," "forecast," "believe," "estimate," "expect,"
"may," "project," "plan," and similar expressions are intended to be
among the statements that identify 'Forward-Looking Statements.'
Although Cornerstone believes that its expectations reflected in these
'Forward-Looking Statements' are reasonable, such statements may
involve unknown risks, uncertainties and other factors disclosed in our
regulatory filings, viewed on the SEDAR website at www.sedar.com.  For
us, uncertainties arise from the behaviour of financial and metals
markets, predicting natural geological phenomena and from numerous
other matters of national, regional, and global scale, including those
of an environmental, climatic, natural, political, economic, business,
competitive, or regulatory nature.  These uncertainties may cause our
actual future results to be materially different than those expressed
in our Forward-Looking Statements.  Although Cornerstone believes the
facts and information contained in this news release to be as correct
and current as possible, Cornerstone does not warrant or make any
representation as to the accuracy, validity or completeness of any
facts or information contained herein and these statements should not
be relied upon as representing its views subsequent to the date of this
news release.   While Cornerstone anticipates that subsequent events
may cause its views to change, it expressly disclaims any obligation to
update the Forward-Looking Statements contained herein except where
outcomes have varied materially from the original statements.

On Behalf of the Board,
Brooke Macdonald
President and CEO

Further information is available on the Cornerstone Web site at
www.cornerstoneresources.com; via e-mail at communications@crigold.com;
or toll free at 1-877-277-8377.

Neither TSX Venture Exchange nor its Regulation Services Provider (as
that term is defined in the policies of the TSX Venture Exchange)
accepts responsibility for the adequacy or accuracy of this release.

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Copyright (c) 2012 CORNERSTONE CAPITAL RESOURCES INC. (CGP)  All rights
reserved.  For more information visit our website at
http://www.cornerstoneresources.com/ or send
mailto:info@cornerstoneresources.com
Message sent on Thu Jun 28, 2012 at 5:15:00 AM Pacific Time
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