Caledonia Mining 2010 Second Quarter and Half Y...

FOR:  CALEDONIA MINING CORPORATION

TSX SYMBOL:  CAL
OTC Bulletin Board SYMBOL:  CALVF
AIM SYMBOL:  CMCL

August 12, 2010

Caledonia Mining 2010 Second Quarter and Half Year Results and Management Conference Call

TORONTO, ONTARIO--(Marketwire - Aug. 12, 2010) - Caledonia Mining Corporation ("Caledonia")
(TSX:CAL)(OTCBB:CALVF)(AIM:CMCL) announces its second quarter and half year 2010 operating and
financial results. The financial results below are reported in Canadian dollars.

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Financial Highlights

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(C$ 000's)                             Q2 2010   Q2 2009   1H 2010  1H 2009
----------------------------------------------------------------------------
Sales from continuing operations         4,154     2,364     8,644    2,364
Operating costs                          2,892     1,483     6,145    2,571
Gross Income/(loss) from continuing
 operations                              1,262       881     2,499     (207)
Income/(Loss) after tax before
 discontinued operations                   320      (162)    1,009     (962)
Net Income/(loss) for the period
 after discontinued operations             294      (199)      953   (1,039)
Net Income/(loss) per share before
 discontinued operations, basic and
 fully diluted                          $0.001  ($0.0003)   $0.002  ($0.002)
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For the quarter ended June 30, 2010 Caledonia generated revenue of $4.15 million from the sale of
3,408 ounces of gold by the Blanket Mine at an average price of US$1,190.45 per ounce, realizing a
gross operating profit of $1.26 million which resulted in a net profit from continuing operations of
$322,000 or $0.001 per fully diluted share.

Commenting on the quarter's performance, Stefan Hayden, President and CEO, said "Gold production by
the Blanket Mine in Zimbabwe was severely affected by electricity supply interruptions which averaged
over 30% of available 24-hour operating time during the quarter, despite the installation of standby
generating capacity in mid-June. Notwithstanding the high incidence of power interruptions, gold
production in the second quarter was 9% higher than the previous quarter as a result of the decision
to focus mining activities on higher grade areas. The high levels of electricity interruptions
contributed substantially to an increase in the average cost per ounce of gold produced due to the
high level of fixed costs at Blanket Mine, the lower production and the unproductive labor directly
caused by the continual power disruptions. In addition, certain cost elements, particularly labor,
increased during the quarter. The average cost per ounce of gold produced in the second quarter
increased slightly from US$804 in the first quarter to U$$810.

Gold production in July rebounded to 1,852 ounces, which represents over 50% of the production for the
entire second quarter and an annualized rate of over 22,000 ounces. The increased production in July
was due to further improvements in the ore feed grade and yield, only a 7% loss of electricity supply
and the installation of the first standby generator which has allowed both mining and the underground
installation of the equipment and steelwork for the No 4 Shaft Expansion Project to continue during
electricity interruptions. The crushing, milling and leaching operations, which are not supported by
the installed standby generating capacity, were able to use their surplus capacity to catch up on some
of the time lost due to electricity interruptions. The higher level of gold production in July
contributed to a sharp reduction in the cost of gold produced to an estimated US$535 per ounce for
that month. July's production and cash cost demonstrates the potential of Blanket to produce gold at a
low cost provided the power supply is not disrupted.

During the quarter work on the No. 4 Shaft Expansion Project continued, albeit with frequent
interruptions due to the high level of power supply interruptions which means that progress on this
Project is currently some two weeks behind schedule. Following the installation of the standby
generator, work on this Project has been accelerated and it is anticipated that the underground
installations will still be completed before the end of the third quarter as originally planned.
Commissioning and ramp-up of production to an annualized rate of 40,000 ounces of gold per annum will
commence in the fourth quarter.

Although the No. 4 Shaft Project will, to an extent, reduce Blanket Mines' vulnerability to
electricity interruptions (as advised in our presentation at the Annual General Meeting), Blanket will
not, unless it installs further generator sets, be able to achieve its target rate of gold production
of 40,000 ounces per annum if electricity interruptions continue at the unprecedented levels
experienced in the second quarter and which re-commenced in early August. If the present power
situation prevails, Blanket will therefore have no choice but to install additional standby generating
capacity, but at significant capital cost and with implications for future operating costs to the
extent that the more expensive standby diesel generated power is used.

Management continues to appraise the capital costs and potential returns from exploration and
development opportunities at Blanket and its other properties. The returns on such projects will be
influenced by, inter alia, assessments of long term gold prices, the cost and availability of capital,
an assessment of the future tax regime in Zimbabwe, the availability of electrical power for these
projects and Blanket's obligations to implement indigenization and the terms of a resultant
indigenization transaction.

Exploration work at the Nama Base Metals project in Zambia continues. Caledonia continues to have
discussion with prospective partners in respect of Nama and the South African PGE exploration
projects, Rooipoort and Mapochsgronde.

Caledonia management will host a conference call starting at 10.00 (EDT) on August 26, 2010. Please
dial-in 10 minutes beforehand and quote the conference ID number: 846902#.

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Canadian Toll-free Number(i):      [phone]
USA Toll-free Number(i):           [phone]
UK Toll-free Number(i):            0808 238 7320

International Access Number:       [phone]
Canadian Toll Number:              [phone]
USA Toll Number:                   [phone]

(i)If you are calling from a mobile phone your provider may charge you when
connected to the toll-free numbers.

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Further information regarding Caledonia's exploration activities and operations along with its latest
financials may be found at www.caledoniamining.com.

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FOR FURTHER INFORMATION PLEASE CONTACT:

Caledonia Mining
Mark Learmonth
[phone]
[e-mail]

OR

BuckBias
Alex Buck
[phone]

OR

RBC Capital Markets
Martin Eales
[phone]

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Caledonia Mining Corp