Thundermin Obtains New Joint Venture Partner as Rambler Metals Purchases Cornerstone's 50% Interest in the Little Deer Copper

Thundermin Obtains New Joint Venture Partner as Rambler Metals Purchases 
Cornerstone's 50% Interest in the Little Deer Copper
Project 
TORONTO, ONTARIO -- (Marketwired) -- 09/17/13 -- Thundermin Resources
Inc. ("Thundermin") (TSX:THR) announces that it has declined to
purchase Cornerstone Capital Resources Inc.'s ("Cornerstone") 50%
interest in the Little Deer Copper Project ("Little Deer") situated
approximately 10 km north of Springdale in north-central
Newfoundland.  
As a result, Thundermin has been advised by Cornerstone that
Cornerstone has entered into a letter of intent with Rambler Metals
and Mining Canada Limited ("Rambler"), a 100% owned subsidiary of
Rambler Metals and Mining plc., to purchase Cornerstone's 50%
participating interest in Little Deer. The purchase price is
$550,000, being $200,000 in cash and $350,000 in common shares of
Rambler plus a 0.75% net smelter return royalty on Cornerstone's
proportionate share of all products produced from any future mine at
Little Deer. Rambler's offer is subject to a full due diligence
review and negotiation and agreement on final terms and conditions
which must be completed on or before November 14, 2013. Should
Rambler and Cornerstone complete the transaction on Little Deer, then
Rambler will be bound by the terms of the current
Thundermin-Cornerstone Joint Venture Agreement under which Thundermin
has the right to increase its interest in Little Deer to 75%. 
John B. Heslop, President and Chief Executive Officer of Thundermin
said "we are looking forward to working with Rambler on the Little
Deer Copper Project. Rambler has successfully brought the
past-producing Ming Mine in Newfoundland back into commercial
production. It is hoped that Rambler's mining expertise will also
lead to the resurrection of the Little Deer and Whalesback copper
deposits in the future if they are viable. The Little Deer and
Whalesback copper deposits are in close proximity to Rambler's port
facilities at Goodyear's Cove which could allow the possibility of
bulk shipping of material to their Nugget Pond Processing Facility
thus minimizing both future capital and operating costs at Little
Deer." 
The Little Deer copper project, located approximately 10 km north of
Springdale in north-central Newfoundland, hosts the Little Deer and
Whalesback copper deposits. On June 22, 2011 and July 26, 2012,
National Instrument 43-101 ("NI 43-101") compliant mineral resource
estimates, which were undertaken by P&E Mining Consultants Inc.
("P&E") of Toronto, Ontario, were announced for Little Deer and
Whalesback, respectively. P&E estimated that Little Deer contains
Indicated Resources of 1,911,000 tonnes ("t") at an average grade of
2.37% Cu (99.8 million lbs. Cu) and additional Inferred Resources of
3,748,000 t at an average grade of 2.13% Cu (176.0 million lbs. of
Cu). P&E estimated that Whalesback contains Indicated Resources of
797,000 tonnes grading 1.67% Cu (29.3 million lbs. Cu) and Inferred
Resources of 443,000 tonnes grading 1.57% Cu (15.3 million lbs. Cu).
On a combined basis, Little Deer and Whalesback are estimated to
contain Indicated Resources of 2,708,000 tonnes grading 2.16% Cu
(129.1 million lbs. Cu) and Inferred Resources of 4,191,000 tonnes
grading 2.07% Cu (191.3 million lbs. Cu).  
On November 1, 2011, results of a positive Preliminary Economic
Assessment ("PEA") for the Little Deer copper deposit, on a
stand-alone basis, were announced that indicate that there is
potential to develop the Little Deer copper deposit on an attractive
economic basis at current copper prices. The discovery of new copper
resources at Whalesback during 2012, because of their proximity to
Little Deer, expand the total mineral resources available for mining
and may enhance the overall economics of establishing a new mining
operation at Little Deer. 
Qualified Persons  
The NI 43-101 mineral resource estimates and PEA referred to above
were 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., is the Q.P. responsible for supervising
all of the drilling programs at Little Deer and Whalesback for the
purposes of NI 43-101.  
About Thundermin  
Thundermin is a Canadian-based mineral exploration company focused on
the exploration for and the discovery of economically viable base
metal and gold deposits in Canada. Thundermin has an interest in, or
the right to earn an interest in 12 base metal and gold properties in
Canada. Thundermin owns a 100% interest in the Lebel Township gold
property, which is located on the Kirkland Lake Main Break in the
prolific Kirkland Lake gold camp. Thundermin has the right to earn a
100% interest in eight exploration licenses covering a large portion
of the Stirling volcanogenic massive zinc-lead-copper-silver-gold
sulphide belt located on Cape Breton Island, Nova Scotia. An initial
diamond drill program undertaken on the property in 2012 was
successful in intersecting copper mineralization in porphyritic
volcanic rocks similar to those known to host massive sulphide
deposits elsewhere. Thundermin has royalty interests in 12 base metal
and gold properties located in Manitoba, Saskatchewan, British
Columbia and Quebec, the most significant being a 2.5% net smelter
return royalty in the Pelletier Lake gold deposit which is under
option to QMX Gold Corporation. The Pelletier Lake property is
currently in arbitration with Thundermin aiming to regain full
ownership of the property. Thundermin also has various shareholdings
in fifteen other junior resource companies that are actively
exploring for base metal, gold, chrome, vanadium-titanium and diamond
deposits in Canada. 
Forward-Looking Statements  
This news release may contain "Forward-Looking Statements" that
involve risks and uncertainties, such as statements of Thundermin'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 Thundermin 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 that can be viewed on the SEDAR
website at www.sedar.com. For us, uncertainties arise from the
behavior of financial and metals markets 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 Thundermin believes the
facts and information contained in this news release to be as correct
and current as possible, Thundermin 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.  
For further information on Thundermin Resources Inc., visit
Thundermin's website at www.thundermin.com or the SEDAR website at
www.sedar.com.
Contacts:
Thundermin Resources Inc.
John B. Heslop
President & CEO
(647) 344-1167 
Thundermin Resources Inc.
James W. Gill
Chairman
(416) 450-1851
www.thundermin.com