<PAGE>

[GRAPHIC - CAMPBELL RESOURCES INC. LOGO]  CAMPBELL RESOURCES INC.

                                  PRESS RELEASE
                              For immediate release

                               CORNER BAY - UPDATE

MONTREAL, FEBRUARY 21, 2006 - CAMPBELL RESOURCES INC. (TSX: CCH, OTC BULLETIN
BOARD: CBLRF) is pleased to update the results of the in-depth drilling program
on the Corner Bay project, a Campbell Resources Inc. wholly owned property.

The objective of the campaign, ended in mid-December, was to verify the
potential, at-depth, of the Main zone between -600 and -1200 m, on the west side
of the diabase dyke which intercepts the zone. A total of 10,698 meters spread
over 8 new holes as well as the deepening of a drill hole dating back to 1995
were investigated during this drilling campaign. The results are very
encouraging and are summarized as follows:

<Table>
<Caption>
-----------------------------------------------------------------------------------------------------------------------
                                                      MAIN ZONE
-----------------------------------------------------------------------------------------------------------------------
    HOLE #          VERTICAL     SECTION      GRADE         CORE        (1)            INTERVAL          POSITION
                   ELEVATION                  (% CU)       LENGTH      TRUE              (m)          (IN RELATION TO
                      (m)                                   (m)      THICKNESS                           THE DYKE)
                                                                       (m)
<S>                 <C>           <C>         <C>         <C>          <C>         <C>                     <C>
-----------------------------------------------------------------------------------------------------------------------
   CB-95-01*         -965         5+00S       3.28        2.01         0.73        1137.92-1139.93          West
                                           ------------------------------------------------------------
                                              2.79        12.09        4.41        1145.34-1157.43
-----------------------------------------------------------------------------------------------------------------------
    CB-05-91         -1145        3+50S       0.65        1.09         0.42        1393.72-1394.81          West
-----------------------------------------------------------------------------------------------------------------------
   CB-05-92*         -1175        1+50S       9.27        16.15        6.70        1432.62-1448.77          West
-----------------------------------------------------------------------------------------------------------------------
   CB-05-93*         -800         5+50S       4.97        7.07         2.31         955.29-962.36           West
                         incluant             9.27        2.87         0.94         955.29-958.16
-----------------------------------------------------------------------------------------------------------------------
    CB-05-94         -735         1+75S       2.06        2.71         0.89         897.11-899.82           West
-----------------------------------------------------------------------------------------------------------------------
   CB-05-95*         -915         4+25S       2.02        8.23         3.43        1152.15-1160.38          West
                         incluant             3.29        3.98         1.66        1155.35-1159.33
-----------------------------------------------------------------------------------------------------------------------
    CB-05-96         -815         3+25S       2.57        1.09         0.41        1010.53-1011.62          West
-----------------------------------------------------------------------------------------------------------------------
   CB-05-97*         -615         4+25S       3.56        8.82         3.05         742.98-751.80           East
                         incluant             5.13        5.84         2.02         745.96-751.80
-----------------------------------------------------------------------------------------------------------------------
    CB-05-97         -750         4+25S       1.59        1.23         0.44         917.33-918.56           West
-----------------------------------------------------------------------------------------------------------------------
    CB-05-98         -580         1+00S       2.13        2.55         0.94         728.23-730.78           West
-----------------------------------------------------------------------------------------------------------------------
                                              OTHER ZONES OF INTEREST **
-----------------------------------------------------------------------------------------------------------------------
   CB-05-91*         -710         4+25S       3.38        9.47         3.13         846.46-855.93           East
                                           ------------------------------------------------------------
                     -720                     3.18        1.93         0.64         861.89-863.82
-----------------------------------------------------------------------------------------------------------------------
    CB-05-93         -475         5+50S       1.81        2.76         0.85         561.85-564.61           East
                                           ------------------------------------------------------------
                                              1.97        3.54         1.09         567.74-571.28
-----------------------------------------------------------------------------------------------------------------------
</Table>

*   As detailed in the November 28, 2005 press release.

**  Could correspond to the little known East zone and situated at 150-200 m
    East of the Main zone.

(1) Assuming an average dip of 75 degrees W for the Main zone

<PAGE>

Generally, the mineralization is found in a strongly altered zone composed of
chlorite, calcite and sericite. The varying proportions of these minerals give a
brechiated look to the rock. The higher concentration of sulphides
(chalcopyrite, pyrite) is found in a brechiated quartz and carbonate vein. The
sulphides are usually found in a massive to semi-massive "splash" within the
quartz. On either side of those "splashes", the sulphides are disseminated with
quantities diminishing gradually.

In hole CB-05-91, the Main zone corresponds to a 16 m interval (core length)
heavily altered in chlorite, sericite and calcite but low in sulphides (tr. to
5%) mainly pyrite.

Holes CB-05-94, 96 and 97 all intercepted an important alteration zone
corresponding to the Main zone, west of the dyke. However, only small cm to dm
mineralized zones were intercepted in hole 94 and contain mainly pyrrhotite and
pyrite with low quantities of chalcopyrite. Mineralization in holes 96 and 97 is
much more important. It is present in cm to dm veins (3-15% sulphides) and in cm
to dm zones of semi-massive to massive sulphides (30-80%). However, again the
dominant sulphides are pyrite and pyrrhotite. The best mineralized intervals
with chalcopyrite are located on the footwall of the zone.

Hole CB-05-97 also intercepted the Main zone, to the east of the diabase dyke.
Here the rock is altered over 25 m (core length) between 730 and 755 m.
Mineralization is weak on the first half of the core (tr to 5% sulphides) but
becomes interesting in the second half with dm intervals containing sulphides
varying from 10 to 40% and chalcopyrite reaching up to 25%.

Hole CB-05-98 intercepted weak to average altered zones more or less
discontinuous between 725 and 747 metres. The sulphide content varies between 1
to 15%, often dominated by chalcopyrite. The best interception graded an average
of 2.13% Cu over 2.55 m (core length) on the footwall of the Main zone.

Holes CB-95-01 AND 93 both intercepted an interesting altered and mineralized
zone, east of the dyke. Considering their positioning, the zone could correspond
to the little known East zone which is situated 150-200 m east of the Main zone.
THESE RESULTS COULD LEAD TO THE DEVELOPMENT OF ECONOMIC SECTORS IN THE EAST
ZONE.

An update of resources calculations was completed on January 31, 2006. The
update includes definition drillings done on the upper portion of the deposit in
2004 and 2005 (surface -600 metres) as well as holes F-44, F-44W, F-101,
CB-95-01, and CB-05-91 to 98 having intercepted the mineralization situated on
the west side of the dyke, at depth.

<Table>
<Caption>
--------------------------------------------------------------------------------
          Resources Summary (GRADING: CU [greater than or equal to] 3%)
--------------------------------------------------------------------------------
   MEASURED RESOURCES         INDICATED RESOURCES         INFERRED RESOURCES
 TONNE          CU (%)       TONNE          CU (%)       TONNE            CU (%)
--------------------------------------------------------------------------------
<S>             <C>           <C>             <C>        <C>              <C>
671,400         5.13          295,400         5.53       792,900          6.60

--------------------------------------------------------------------------------
          Resources Summary (GRADING: CU [greater than or equal to] 2%)
--------------------------------------------------------------------------------

862,100         4.55          379,800         4.85      1,013,300         5.76

</Table>


                                       2
<PAGE>

Principal parameters: True minimal width of 1.6 meters. Maximum radius of
influence of 25, 50 and 75 meters respectively for the measured, indicated and
inferred categories for the east side of the dyke. All resources on the west
side of the dyke were categorized as inferred. High grades cut at 12% Cu. The
polygon method is used for calculations.

As soon as the financial situation will allow it, Campbell will start the
development of a decline and two levels which will allow for the extraction of a
40,000 tons bulk sample. Once all physical parameters of the ore body are
defined, Campbell will develop the ore body to a depth of 300 meters to begin
ore production. The extracted ore will be processed at Campbell's Copper Rand
mill located 45 Km away.

It is in Campbell Resources plans to continue the exploration programs on the
Corner Bay property. It will include EM down-the-hole geophysical surveys in
holes not yet surveyed by this method with results to be compared to those
obtained during the September program. Particular attention will be paid to any
anomaly which could reveal favourable sectors corresponding to the East zone.
The geophysical surveys will be followed by an aggressive at depth drilling
program to explore the north and south extensions of the Main zone, west of the
diabase dyke and to better define the sector bounded by the current holes.

The Corner Bay deposit is situated on the south side of the Dore Lake complex.
The heart of the Chibougamau mining camp is located on the north side of this
layered anorthositic intrusive complex. It is host to over 15 copper and gold
producers who have, to date, produced over 1.6 billion pounds of copper and 3.1
million ounces of gold.

Campbell is a mining company focusing mainly in the Chibougamau region of
Quebec, holding interests in gold and gold-copper exploration and mining
properties.

Qualified person

The drilling program was carried out by the personnel of Campbell Resources,
under the supervision of Mr. Jean Girard, geol. ing. Mr. Girard is a qualified
person as defined by National Instrument 43-101. He has over 30 years of
experience in exploration.


Assay Procedures

Samples from half of the split core were sent to Campbell laboratory in
Chibougamau Quebec for gold and copper analysis. The samples were ground to
better than 70% -10 mesh. A representative, 100 to 250 gram split of the -10
mesh fraction was pulverized to better than 85% - 200 mesh and homogenized. A
5-gram split of the pulp was assayed by atomic absorption. Check-assays were
conducted on pulp (14.58g) for samples over 3.45 g/t Ay (0.100 opt Au) using
fire assay with atomic absorption finish for samples assaying greater than 1 g/t
Au (0.058 opt Au), and with gravimetric finish for those assaying greater than
10 g/t Au ).292 opt Au).

Portions of the original reject and/or pulp of samples within the mineralized
zone have been sent to an independent laboratory for additional check-assaying.

Certain information contained in this release contains "Forward-Looking
Statements" within the meaning of the Private Securities Litigation Reform Act
of 1995 and is subject to certain risks and uncertainties, including those "Risk
Factors" set forth in the Campbell's current Annual Report on Form 20-F for the
year ended December 31, 2004. Such factors include, but are not limited to:
differences between estimated and actual mineral reserves and resources; changes
to exploration, development and mining plans due to prudent reaction of
management to ongoing exploration results, engineering and financial concerns;
and fluctuations in the gold price which affect the profitability and mineral
reserves and resources of Campbell. Readers are cautioned not to place undue
reliance on these forward-looking statements, which speak only as of the date
hereof. Campbell undertakes no obligation to release publicly any revisions to
these forward-looking statements to reflect events or circumstances after the
date hereof or to reflect unanticipated events or developments.

                                     - 30 -

FOR MORE INFORMATION:

<Table>
<Caption>
<S>                                                              <C>
CAMPBELL RESOURCES INC.                                          Renmark Financial Communications Inc.
Andre Fortier, President and Chief Executive Officer             Henri Perron, hperron@renmarkfinancial.com
Tel.: 514-875-9037                                               John Boidman, jboidman@renmarkfinancial.com
Fax: 514-875-9764                                                Tel.: 514-939-3989
afortier@campbellresources.com                                   Fax: 514-939-3717
                                                                 www.renmarkfinancial.com

</Table>

                                        3

<PAGE>

                       SIMPLIFIED GEOLOGY OF THE PROPERTY

                                      [MAP]



                                        4
<PAGE>

                            GENERAL LONGITUDINAL VIEW

                                      [MAP]


                                        5
<PAGE>


                               SCHEMATIC X-SECTION

                                      [MAP]


                                        6