Kensington Resources Ltd.

Kensington Resources Ltd.

March 21, 2005 09:01 ET

Kensington Resources Ltd.: Another Large Diamond From Fort A La Corne Kimberlite 140/141-4.09 Carat Diamond Recovered From Drillhole 04-140-044


NEWS RELEASE TRANSMITTED BY CCNMatthews

FOR: KENSINGTON RESOURCES LTD.

TSX VENTURE SYMBOL: KRT

MARCH 21, 2005 - 09:01 ET

Kensington Resources Ltd.: Another Large Diamond From
Fort A La Corne Kimberlite 140/141-4.09 Carat Diamond
Recovered From Drillhole 04-140-044

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - March 21, 2005) - Kensington
Resources Ltd. (the "Company") (TSX VENTURE:KRT) announces the recovery
of 160 macrodiamonds weighing 21.06 carats, including a 4.09 carat
stone, from large diameter drillhole 04-140-044 targeted on Fort a la
Corne Kimberlite 140/141 drilled during the 2004 Evaluation Program.

The total estimated mass of kimberlite excavated from 04-140-044 was
186.29 tonnes of which 94.36 tonnes of material greater than 1.5 mm in
size were retained for macrodiamond recoveries. Minibulk samples were
shipped to the De Beers' dense media separation plant located in Grande
Prairie, Alberta for the first stage of diamond recovery procedures,
followed by final diamond recovery in an ultra-high security facility in
Johannesburg, RSA. A summary of sampling information and diamond
recovery results for this drillhole is shown in Table 1.



Table 1: Summary of Macrodiamond Recovery for Minibulk Samples from
Drillhole 04-140-044

---------------------------------------------------------------------
Theoretical
Sample Excavated
Kimberlite Interval Mass Total
Drillhole Unit (metres) (tonnes)(1) Carats
---------------------------------------------------------------------
04-140-044 140 Breccia Beds 128.36 186.29 21.06
---------------------------------------------------------------------


---------------------------------------------------------------------
Est. # of Diamonds
Drillhole Drillhole greater than
Grade Total stones/ 0.25 cts.
Drillhole (cpht) Stones tonne (largest stone)(2)
---------------------------------------------------------------------
04-140-044 11.30 160 0.86 17 stones (4.09 cts.)
---------------------------------------------------------------------
(1) The calculation of theoretical mass was based on the volume of a
vertical cylinder and a kimberlite rock density of 2.21.
(2) Diamond weights were provided in terms of total carats per sieve
class. The reader is cautioned that for interval samples
(12 metres) with multiple stone recoveries, the number of stones
greater than 0.25 carats was estimated by dividing carat weight
by the number of stones in the +9 sieve class for selected
samples and all of the +11 and larger sieve classes.


"Relatively small minibulk samples from the Breccia Beds in the southern
part of Kimberlite 140/141 have provided significant numbers of diamonds
in the coarser size fractions and the 4.09 carat stone recovered in this
drillhole provides additional sharp emphasis on the large stone
potential that this higher-grade zone is predicted to deliver,"
commented Robert McCallum, President and CEO of Kensington Resources Ltd.

Large stone recoveries in drillhole 04-140-044 included an estimated 14
diamonds greater than 0.25 carat in size with a combined weight of 9.58
carats. These 14 diamonds, or some 8.8% of the total number of stones,
account for 45.5% of the carat weight of the parcel. The 4.09 carat
stone was recovered from the 118 to 130 metre interval within the upper
part of the kimberlite body. The quality and value of this stone will be
determined by De Beers' experts in due course. The size distribution of
the recovered diamonds from this drillhole is shown in Table 2.



Table 2: Summary of Macrodiamond Recovery by Sieve Size Category

---------------------------------------------------------------------
+1 Sieve +2 Sieve +3 Sieve +5 Sieve +6 Sieve +7 Sieve
greater greater greater greater greater greater
than than than than than than
Drillhole 1.09 mm 1.32 mm 1.48 mm 1.83 mm 2.16 mm 2.46 mm
---------------------------------------------------------------------
04-140-044 Carats 0.01 0.145 1.025 3.035 1.96 3.37
---------------------------------------------------------------------
04-140-044 Stones 1 3 29 54 22 26
---------------------------------------------------------------------


---------------------------------------------------------------------
+9 Sieve +11 Sieve +13 Sieve +15 Sieve +21 Sieve
greater greater greater greater greater
than than than than than
Drillhole 2.85 mm 3.45 mm 4.52 mm 5.41 mm 7.93 mm
---------------------------------------------------------------------
04-140-044 Carats 2.77 3.13 0.65 0.86 4.09
---------------------------------------------------------------------
04-140-044 Stones 12 8 1 1 1
---------------------------------------------------------------------
(i)An additional 2 stones weighing a cumulative 0.015 carats were
recovered in the -1 sieve category (less than 1.09 mm).


The 2004 Evaluation Program (CDN $7.6 million) included ten large
diameter minibulk drillholes positioned on high-grade zones in
kimberlites 140/141 and 122. Samples and results from drillhole
04-140-044 are the second of five batches that were recovered from
Kimberlite 140/141 breccia beds and related kimberlite units during the
2004 Evaluation Program. Minibulk samples collected in this program will
provide additional diamonds that will be used to increase the level of
confidence in grade forecasts, and for revenue modeling by De Beers'
experts. A recently revised map of kimberlite body 140/141 showing
location of the 2004 drillholes is posted on the Kensington Resources
Ltd. website at www.kensington-resources.com.

Brent C. Jellicoe, P.Geo. is the Qualified Person for the Company and
has reviewed the technical information herein. All aspects of quality
assurance, quality control, and sample chain of custody for the Fort a
la Corne Joint Venture are managed by De Beers Canada Inc., the project
operator.

Kensington Resources Ltd. is an exploration and mine development company
currently focused on the high potential Fort a la Corne Diamond Project
in Saskatchewan. The management team includes strong technical expertise
and is committed to reaching a diamond producer status for the
realization of shareholder value. The Fort a la Corne Diamond Project is
a joint venture among Kensington Resources Ltd. (42.245%), De Beers
Canada Inc. (42.245%), Cameco Corporation (5.51%) and UEM Inc. (carried
10%). After fifteen years of exploration at Fort a la Corne, the joint
venture partners are now planning future programs with a view to
entering into an accelerated results-driven advanced exploration and
evaluation phase targeted on reaching a pre-feasibility decision in
2008. The Fort a la Corne Diamond Project includes 63 identified
kimberlite bodies within the largest diamondiferous kimberlite cluster
in the world.

Robert A. McCallum, President & CEO

FORM 20-F FILE #0-24980

LISTED IN STANDARD & POOR'S

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