POS Polar Star Mining (Tier2)

Polar Star Mining Corporation (TSX VENTURE:POS) ("Polar Star" or the "Company")
announces an exploration update on its Montezuma property which is believed by
the Company to have the potential to host large porphyry copper deposits.
Reconnaissance geological mapping, rock and soil sampling by Polar Star staff
and a 119 line kilometre pole-dipole Induced Polarisation (IP) survey conducted
on behalf of Polar Star by Quantec Geoscience, Santiago, Chile have now been
completed.


Highlights:

Montezuma

- Old workings, leached and oxide copper bearing outcrops, geological and
geochemical surveys define a highly prospective belt 5-8 kilometres wide by 30
kilometres long centred on the West Fault System.


- A large Chargeability/Resistivity anomaly 0.8 to 2.3 kilometres wide, 23.5
kilometres long, extending to depths of at least 300 to 500 metres has been
identified by the Quantec IP survey within this belt, along with several other
2- 4 kilometre long satellite anomalies.


- The length of the main IP anomaly is greater than all the known Chuquicamata
porphyry copper deposits combined.


- Property consists of 43,200 hectares, and is located 30 kilometres due south
of CODELCO's Chuquicamata Mine and Smelter Complex; and,


- Covers 25 km of the West Fault System and associated splays, which hosts many
large porphyry copper deposits including Chuquicamata and Escondida.


The Montezuma Project

The Montezuma Project consists of a contiguous group of 100% owned exploration
concessions staked by Polar Star. As noted above, the West Fault System is well
known for the exceptional tonnage and quality of its deposits. The Chilean Mine
Handbook reported that in 2007 the BHP/RTZ owned Escondida Mine produced 1.5
million tonnes of copper and had copper reserves of 4.3 billion tonnes at an
average grade of 0.81% Cu. The Corporacion Nacional del Cobre's ("Codelco") El
Norte Division, which includes Chuquicamata, reported production of 0.9 million
tonnes of copper, reserves of 2.3 billion tonnes and an average grade of 0.79%
Cu during the same period.


The Montezuma Project is located in the Sierra Limon Verde oxide copper mining
district and is readily accessible by paved and good gravel road from the city
of Calama, 20 kilometers to the north. The project consists of three groups of
exploration concessions; Montezuma, Topater and Limonal totaling 43,200 hectares
staked and owned 100% by Polar Star.


The Property lies within the central sub-zone of the main Chilean porphyry belt
and covers approximately 25 kilometres of strike of the West Fault System and
associated sub-parallel and NW-SE cross-cutting ancillary faults. The hills of
Sierra Limon Verde which cover the Limonal, north and west half of the Montezuma
claims generally expose the same group of metamorphosed Paleozoic intrusive,
volcanic and sedimentary rocks that host the Chuquicamata porphyry copper
deposits. The rest of the Montezuma claims and most of the adjacent Topater
claims are covered by pediment gravels derived from the local hills.


Polar's geological and geochemical surveys to date have identified several large
areas of leached, hematite stained and sulphate rich caps containing minor
amounts of copper wad and chrysocola developed along and lateral to the West
Fault System where it strikes through the northern claims of the Montezuma group
and within the Topater group, quartz-tourmaline-copper-gold veins and stockworks
of the type commonly found peripheral to porphyry systems. In addition on
several of the IP lines, 1-2 metre deep pits dug for electrodes uncovered
disseminated copper minerals in porphyritic intrusive rocks.


There are no public records of mining or exploration activity in the property
area. There are however three groups of old drill holes reportedly drilled by
Codelco in the central and southern part of the Montezuma property along the
projection of the West Fault System. Cuttings from a number of these holes show
propylitic to phyllic alteration assemblages containing disseminated and veinlet
pyrite plus minor chalcopyrite and bornite.


The reconnaissance IP survey was concentrated along a NNE trending belt some 6-9
kilometres wide covering the trace of the West Fault System and adjacent N-NNE
trending splays and cross faults and detected several anomalies. The main
anomaly, which is entirely covered either by a sulphate cap or pediment gravels
is 0.8 - 2.3 kilometres wide, 23.5 kilometres long and extends to depths of at
least 300-500 metres. The central sector of the anomaly straddles the West Fault
but to the north and south it appears to be controlled by NNE trending splay and
cross faults. By comparison the length of this main anomaly is greater than the
combined known Chuquicamata porphyry copper deposits from Radomiro Tomic to Toki
(see attached map).


Qualified Person

Mr. Terence Walker, M.Sc., P.Geo., is the qualified person within the meaning of
National Instrument 43-101. Mr. Walker has reviewed the contents of this news
release. The forgoing comments and interpretation of the IP survey results are
based on local knowledge and experience of Polar Star's personnel. The Quantec
final report and recommendations are still in preparation.


About Polar Star

Polar Star was created to acquire advanced stage exploration properties focusing
on gold, copper gold, and uranium. The Corporation's material assets include 20
projects in Chile, which are 100% owned and cover approximately 146,112
hectares. HudBay Minerals Inc. acquired 3,860,605 shares of Polar Star in July
2008 which represents approximately 9.8% of the outstanding shares of the
Company.


Forward-Looking Statements

The statements made in this news release may contain forward-looking statements
that may involve a number of risks and uncertainties. Actual events or results
could differ materially from the Company's expectations and projections.
Accordingly, readers should not place undue reliance on forward-looking
statements. For a more detailed discussion of such risks and other factors,
refer to Polar Star Mining Corporation's filings with Canadian securities
regulators available on www.sedar.com or the Company's website at
www.polarstarmining.com.


Share Capitalization:

Shares Outstanding: 39,241,098 as at January 12, 2009.

Business Television Feature:

Polar Star was selected and featured on Business Television in early March 2008.
If you missed the show, please click on the link below to watch the full-feature


http://www.b-tv.com/i/videos/PolarStar.wmv

To view the map of the Montezuma Project, please visit the following link:

http://media3.marketwire.com/docs/pos.pdf

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