Callinan Activity Update

    VANCOUVER, July 22 /CNW/ - Callinan Mines (CAA:TSX.V, CCNMF:OTCBB) wishes
to provide the following update concerning its ongoing exploration and
development activities in the provinces of Manitoba and British Columbia.

    Coles Creek, BC
    Crews have been mobilized to the company's Coles Creek Project near
Houston, British Columbia to begin a summer drill program. The program will
target both the existing porphyry hosted copper-molybdenum mineralization and
the newly discovered silver-zinc-lead mineralization hosted in a
volcano-sedimentary flow. The company will conduct deep drilling on the
apparent basin-like feature. "It's possible that the silver-zinc-lead hosted
in the volcanics represents an enrichment from a more concentrated system
further down," explained Vic Sidic, the company's Field Chief. "It could be
part of the same phenomenon that is enriching the porphyry system. We're
looking forward to drilling the deep holes to find out."

    Cal Claims
    Preliminary results from the analysis of the recoverability of copper and
nickel from Callinan's wholly owned Cal Claims project have been described as
"very encouraging" by Process Analytical Laboratories. A flotation test showed
very little loss of value, magnetic separation and ashing of graphite
indicates that a commercial grade copper-nickel-cobalt concentrate is
possible. A detailed metallurgical study has been commissioned to refine and
optimize the metal recovery, using material recovered from the 2007 Cal Claims
drill program.
    The Cal Claims are located in an area between Snow Lake and Thompson,
Manitoba. Callinan completed a five-hole drill program in 2007 returning
assays of 0.33 to 1.19% copper, 0.12 to 0.28% nickel, and up to 0.03% cobalt
over widths ranging from 5.7 to 113.9 metres. (See company news release July
31st, 2007 for full results.)
    Subject to receiving encouraging results from the metallurgical testing,
Callinan will continue exploration of the project with the intention of
producing an NI 43-101 compliant resource estimate.

    Winter Programs
    Processing of drill core from winter programs in Fox River, The Pine
Project, Phillips Lake and Snow Lake, Manitoba are ongoing. Assays will be
published when available.
    A geochemical mobile metal ion (MMI) survey will be conducted on the Fox
River claims to further examine areas of interest isolated by VTEM survey.

    On Behalf of the Board of Directors,

    Mike Muzylowski

    Callinan's exploration activities are being conducted under the
supervision of P.J. DeVeaux, P.Geo, a qualified person as defined by National
Instrument 43-101 who has reviewed and approved the contents of this release.

    The TSX Venture Exchange has not reviewed, and is not responsible for the
    adequacy and accuracy of this release.

For further information:

For further information: 736 Granville Street, Suite 1100, Vancouver,
BC, V6Z 1G3, Telephone: (604) 605-0885, Fax: (604) 605-0886, Email:, Website:

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