ROCA - Drilling Intersects Significant Tungsten Mineralization Above MAX Mine

    ROK: TSX.V

    VANCOUVER, July 29 /CNW/ - Roca Mines Inc. (ROK: TSX-V) ("Roca" or "the
Company") reports that its recent surface diamond-drilling program conducted
on the southern portion of the Ridge Tungsten Zone at the MAX project has
intersected significant intervals and grades of tungsten mineralization.
Combined with past work, the recent results suggest great potential for a new
tungsten resource to be defined at MAX based on the exceptional continuity
observed. The mineralization was intersected above and in close proximity to
the producing MAX Mine. At their lowest point, the tungsten intervals are
located approximately 650 metres (m) above the Main Haulage Adit level of the
MAX Mine.
    Roca's initial program was designed to test downdip continuity as well as
for potential grade increase closer to the MAX intrusions. Each of the four
drillholes successfully intersected tungsten mineralization occurring as
scheelite in garnet diopside-rich skarn layers. In addition, grades appear to
be increasing with depth as evident in Drillhole MM-08-07 which intersected
0.504% WO3 over 13.10m (estimated 12.5m true thickness) at a downhole depth of
    Previous surface mapping and prospecting by ROCA extended the zone of
scheelite/skarn mineralization over a strike length of 1,400m. Recent drilling
took place on the southern portion of the area where three widely-spaced and
shallow holes were drilled in 1979 (see Roca news release dated Dec 12, 2006).
This recent drill program also discovered a new, lower mineralized skarn band,
including; MM-08-05 which returned 0.593% WO(3) over 3.17m (estimated to be
true thickness) at a depth of 220.62m.
    The continuity of the mineralized zones indicated by drilling and the
sizeable footprint of the mineralization on surface over substantial distances
suggests the potential for a large-scale tungsten resource located immediately
above the MAX Mine. Additional diamond drilling to assess the potential of a
tungsten resource, obtain metallurgical samples in addition to possible
near-term development with an underground raise are currently being planned.
Existing infrastructure at the MAX Mine is well suited to the potential
development of a tungsten resource.
    Selected drill hole intercepts are tabulated below;

    MM-08-04       From (m)       To (m)      Width (m)      W %      WO(3)%
                      4.50          6.93        2.43        0.107      0.135
                    169.40        172.50        3.10        0.125      0.158
    Including       171.22        172.50        1.28        0.211      0.267
                    186.00        188.60        2.60        0.231      0.291
    Including       187.60        188.40        0.80        0.562      0.709

    MM-08-05       From (m)       To (m)      Width (m)      W %      WO(3)%
                      4.10         12.22        8.12        0.121      0.153
                     64.28         67.03        2.75        0.317      0.399
                    208.05        216.76        8.71        0.403      0.508
    Including       208.05        214.79        6.74        0.505      0.637
                    220.62        223.79        3.17        0.471      0.593
    Including       221.54        223.79        2.25        0.646      0.815
                    315.42        316.28        0.86        0.429      0.541

    MM-08-06       From (m)       To (m)      Width (m)      W %      WO(3)%
                    187.25        188.33        1.08        0.339      0.427
                    196.06        201.26        5.20        0.327      0.413
    Including       196.40        201.26        4.86        0.348      0.439

    MM-08-07       From (m)       To (m)      Width (m)      W %      WO(3)%
                    167.80        180.90       13.10        0.400      0.504
    Including       168.14        178.53       10.39        0.478      0.603
                    185.41        188.96        3.55        0.330      0.416
    Including       186.77        187.95        1.18        0.708      0.893

    Sampling and logging of the drill holes was conducted under the
supervision of David Melling, P.Geo., a qualified person as defined by
NI43- 101. The sampling program included quality control procedures, in
addition to internal quality control at the assay laboratory, ACME Analytical
of Vancouver, BC an ISO 9001:2000 accredited laboratory.
    Scott Broughton, P.Eng. is the qualified person responsible for the
preparation of this news release.

                               ROCA MINES INC.

                              "Scott Broughton"

                 Scott E. Broughton, P.Eng. - President & CEO

    The TSX Venture Exchange does not accept responsibility for the adequacy
    or accuracy of this release.

    %SEDAR: 00018660E

For further information:

For further information: Doug Fosbrooke, Investor Relations, Tel: (604)
684-2900, Fax: (604) 684-2902, Email:, Web:

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