BMK MacDonald Mines Exploration Ltd

MacDonald Mines Exploration Ltd. (TSX VENTURE:BMK) ("MacDonald" or the
"Company") continues to receive results of a ground gravity survey over targets
on its Butler Property in the Ring of Fire. In addition, the IP/Resistivity
Survey has now been completed over the primary VMS Target at Butler 3. Butler 3
exhibits a suite of characteristics typical of a VMS system as identified in
previous press releases. 


Deep Penetration and High Resolution IP/Resistivity Survey Results over Butler 3 

Results of the Insight Geophysics survey over Butler 3 have confirmed
chargeability anomalies and resistivity structures fitting with the Company's
model - that of an overturned VMS system with the core to the east of the
intersected stock work/stringer mineralization. Chargeability measures the
ability of the sub-surface to temporarily maintain an electrical charge -
sulphides are typically chargeable. 


The preliminary post processing studies indicate chargeable targets that are 10
times the regional background in magnitude at vertical depths exceeding 400
meters. The apparent resistivity studies support the interpretation of an
overturned VMS model. Butler 3 shows the traditional complexity of lithology,
structure and alteration of a VMS system. 


The Insight Survey (DCIP) supports the following observations at Butler 3: 



1.  The volume of alteration is exceptional, indicating that a very large
    volume of hydrothermal fluid discharged in this region. The DCIP surveys
    clearly indicate this to depths in excess of 400m. 
2.  Butler 3 is contained in a felsic-dominated sequence. The apparent
    resistivity values collected are typical of these types of rocks. 
3.  The alteration zone is Cu-enriched, and the Cu content increases
    stratigraphically upwards towards the mineralized horizon. Cu tenor is
    high (greater than 3%). The DCIP chargeability modeling indicates
    anomalies, which are typical of those with increased sulphides. 



Ground Gravity Survey - Butler 5 

After the completion of the gravity survey over Butler 3 (February 26, 2012
Press Release) the survey crew began data collection over Butler 5. The OGS/GSC
airborne gravity gradiometer survey identified a density anomaly on Butler 5
that has the greatest measured amplitude of the entire airborne survey of the
region. The gravity signature of this anomaly has a larger "footprint" than that
over the known chromite deposits in the Ring of Fire. 


The ground gravity survey conducted by Abitibi Geophysics has confirmed the
airborne data signature. The ground gravity data has mapped an anomaly with an
amplitude of 7 mGal with an approximate strike greater than 1.5 kms and over
700m wide. The anomaly is bound on each side by magnetic highs and our previous
drilling has confirmed the anomaly exists in an ultra mafic sequence. Although
the Butler 5 gravity anomaly has a larger "footprint", the associated gravity
signature and flanking magnetic association are hallmark characteristics found
in the world-class chromite deposits discovered in the Ring of Fire. 


Drill Crew Mobilized

The Company has now mobilized its field crew to the Butler Lake camp. A
4,000-metre drill program will commence in early April.


Qualified Person 

Quentin Yarie, P.Geo., is the qualified person in regard to the technical data
contained within this news release and will be responsible for overseeing all
aspects of the Company's exploration programs. 


About MacDonald Mines Exploration Ltd. 

MacDonald Mines is a mineral exploration company with an established exploration
history in the Canadian Northlands. MacDonald Mines has set upon a strategic
direction of exploration with particular focus on nickel, chrome, copper, zinc,
vanadium and titanium in the "Ring of Fire" area of the James Bay Lowlands of
Northern Ontario. 


With over 9 years of exploration in the James Bay Lowlands, the Company has
systematically acquired quality land positions based on a very precise selection
format that utilizes region-wide interpretations completed by geological
consultant Hadyn Butler, P. Geo. MacDonald is now the second largest landholder
in the Ring of Fire and has a proven track record of environmentally and
socially conscious exploration practices. 


MacDonald Mines exploration focus has been on 3 properties - the Butler, the
Semple-Hulbert and the Sanderson. Recent exploration has been focused on the
Butler property, where the Company has identified seven significant zones of
multi-element mineralization, including copper-zinc VMS systems, vandiferous
titano-magnetite and magmatic nickel sulphides.


The Company has established rapport with First Nation Communities in this
region, which has culminated in the signing of exploration agreements with the
Kasabonika Lake and Webequie First Nations.


More detailed information about the Company is available on the website:
www.macdonaldmines.com  


Cautionary Statement:  

No stock exchange, securities commission or other regulatory authority has
approved or disapproved the information contained herein. The foregoing
information may contain forward-looking statements relating to the future
performance of MacDonald Mines Exploration Inc. Forward-looking statements,
specifically those concerning future performance, are subject to certain risks
and uncertainties, and actual results may differ materially from MacDonald Mines
plans and expectations. These plans, expectations, risks and uncertainties are
detailed herein and from time to time in the filings made by MacDonald Mines
with the TSX Venture Exchange and securities regulators. MacDonald Mines does
not assume any obligation to update or revise its forward-looking statements,
whether as a result of new information, future events or otherwise. We seek safe
harbour.

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