ALR

Alder Resources Ltd. ("Alder") (TSX VENTURE:ALR) and Calibre Mining Corp.
("Calibre") (TSX VENTURE:CXB) are pleased to announce that the TSX Venture
Exchange has approved the option agreement between Alder and Calibre whereby
Alder can earn a 65% interest in the 3,365 hectare Rosita D concession located
275 kilometers north of Managua, the capital city of Nicaragua, and described in
additional detail in press releases issued by Alder and Calibre, respectively,
on August 22, 2011.


In connection with the approval of the option agreement by the TSX Venture
Exchange, and pursuant to the terms of the option agreement, Alder has issued to
Calibre 200,000 common shares of Alder.


The Rosita D concession hosts the historic open pit Santa Rita
copper-gold-silver deposit from which 5.37M tonnes of ore grading 2.06% Cu, 0.93
g/t Au, and 15.08 g/t Ag was extracted. The mine closed in 1975 due to low
copper prices. Alder management believes that a substantial amount of Cu-Au-Ag
mineralization lies both below and adjacent to the Santa Rita pit. Recent work
carried out by Calibre returned trench intercepts of 1.06 g/t Au, 0.96% Cu and
9.33 g/t Ag over 12.0 metres and 3.26% Cu, 55.82 g/t Ag and 0.15 g/t Au over
8.30 metres. Historic drill intercepts from the R-13 zone, located 500 metres
east of the Rosita deposit, reportedly returned up to 7.2% Cu, 0.44 g/t Au and
76.8 g/t Ag over 10.5 metres. This zone is open to depth and along strike.


The Bambana prospect, located four kilometres northwest of the Santa Rita open
pit, returned intercepts of up to 0.43% Cu over 42.0 metres and 0.51% Cu and
0.25 g/t Au over 11.5 metres in two diamond drill holes completed by Calibre in
2010. A review of this area by Alder identified copper porphyry-style alteration
and sulphide mineralization.


Joseph Arengi, President and Chief Executive Officer of Alder, stated: "Alder is
very pleased to finalize our arrangement with Calibre and begin exploration on
the highly prospective Rosita Cu-Au project. Our exploration efforts will focus
on high priority areas identified by our geologists and will include testing
targets around the historic pits as well as a number of other areas. Our
shareholders can look forward to results from our exploration efforts in the
coming months."


Douglas Forster, Chairman of Calibre, stated: "Calibre is delighted to have
Alder initiating exploration on Calibre's Rosita area copper-gold project. With
Alder advancing our Rosita area targets Calibre will focus on the resource
delineation drill program at our 100% owned Riscos de Oro gold-silver project
and on our new Primavera gold-copper discovery in conjunction with B2 Gold."


Alder intends to begin a work program within the next two weeks that is designed
to accelerate exploration of the Rosita D concession. Alder's first priority
will be to validate the historic Cu-Au mineral resources on the property. The
initial work program includes a reinterpretation of the geophysical data,
evaluation of the mineralized dumps by trenching and reverse circulation
drilling, testing high priority targets around the old Santa Rita and R-13 pits
and trenching and drilling at Bambana. Alder plans to use the results of this
initial work to develop an aggressive drill program that will be designed to
lead to a resource estimate.


Joseph Arengi, M. Sc., P. Geo., President and Chief Executive Officer of Alder
and a qualified person under NI 43-101, has reviewed and approved the scientific
and technical information in this press release.


About Alder Resources Ltd.

Alder is a resource company focused on the development of gold and base metal
projects throughout Latin America. Current projects include the recently
announced Rosita project in Nicaragua located 275 km northeast of Managua and
the La Montanita gold property 40 km northeast of Medellin. Alder will continue
to build its property position with strategic acquisitions.


About Calibre Mining Corp.

Calibre Mining Corp. is focused on the acquisition, exploration and development
of gold and silver deposits in Central America. Calibre has outlined a NI 43-101
compliant inferred resource totalling 835,450 ounces of gold and 4,288,070
ounces of silver at its 100% owned Borosi Project in Nicaragua. Calibre is
presently focused on a drilling program at its 100% owned Riscos de Oro
gold-silver project and the trenching and drilling program at the Primavera
gold-copper prospect in conjunction with B2Gold, also within the Borosi
concessions in Nicaragua.


Major shareholders of Calibre include gold producer Yamana Gold Inc. and
investment fund Sun Valley Gold.




Alder Resources Ltd.                  Calibre Mining Corp.                  
                                                                            
Joseph Arengi, President & CEO        Douglas Forster, Chairman             



Cautionary Note Regarding Forward-looking Information

This press release contains "forward-looking information" within the meaning of
applicable Canadian securities legislation. Forward-looking information
includes, without limitation, statements regarding potential mineralization,
reserve and resource determination, exploration results and future plans.
Generally, forward-looking information can be identified by the use of
forward-looking terminology such as "plans", "expects" or "does not expect", "is
expected", "budget", "scheduled", "estimates", "forecasts", "intends",
"anticipates" or "does not anticipate", or "believes", or variations of such
words and phrases or state that certain actions, events or results "may",
"could", "would", "might" or "will be taken", "occur" or "be achieved".
Forward-looking information is subject to known and unknown risks, uncertainties
and other factors that may cause the actual results, level of activity,
performance or achievements of Alder or Calibre, as the case may be, to be
materially different from those expressed or implied by such forward- looking
information, including but not limited to: general business, economic,
competitive, geopolitical and social uncertainties; the actual results of
current exploration activities; risks associated with operation in foreign
jurisdictions; ability to successfully integrate the purchased properties;
foreign operations risks; and other risks inherent in the mining industry.
Although Alder and Calibre have attempted to identify important factors that
could cause actual results to differ materially from those contained in forward-
looking information, there may be other factors that cause results not to be as
anticipated, estimated or intended. There can be no assurance that such
information will prove to be accurate, as actual results and future events could
differ materially from those anticipated in such statements. Accordingly,
readers should not place undue reliance on forward-looking information. Neither
Alder nor Calibre undertakes to update any forward-looking information, except
in accordance with applicable securities laws.

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