Roca Mines Inc.

 Tue Sep 4, 2007
ROCA - MAX Molybdenum Mine Construction Update

 Vancouver, British Columbia: Roca Mines Inc. (ROK: TSX-V) ("Roca" or "the Company") announces the following update on construction activities at its MAX Molybdenum Mine.

Construction activities at MAX have progressed well since the Company's last update with many components of the project at, or very near completion. The areas that are on schedule as of today to facilitate production include; the underground mine, the assay laboratory and the tailings facility. The underground mine and tailings areas of the project will, like all mines, continue to be developed and constructed over the life of the project.

Recent construction delays in the crusher, mill and concentrator areas have been primarily related to the availability of equipment and personnel. For example, a recent interruption in the delivery of a third primary diesel genset resulted in a postponement to energizing the crusher and mine-mill power distribution system. That equipment is anticipated to arrive at site on Wednesday September 5, 2007 which will allow for the crusher facility and its individual components to be immediately tested and commissioned by mid-September, 2007. Initial testing will be facilitated using waste rock and low-grade material leading to the crushing of stockpiled ore-grade material located near the crusher.

The Mill/Concentrator is also nearing completion and various key components to it will be tested during the month of September 2007 once the power distribution system is completed and energized. Testing at the concentrator will result in the production of concentrates with expected mill capacity being achieved later in September.

Mill expansion engineering is underway with structural designs being completed for the Harding 9.5 x 15, 700 hp ball mill recently acquired. In addition, some preparatory work for the new mill has been completed.

Work on the #2 Adit is also progressing well and will continue without interruption to mine production.

Underground diamond drilling continues to test the deeper extensions of the MAX deposit and core is currently being logged, split and sent to an independent assay laboratory. Results of the drill program will be reported once the assays have been completed and received by the Company.

"Scott Broughton"

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

For further information contact:
Doug Fosbrooke
Investor Relations
Tel: 604-684-2900
Fax: 604-684-2902
Email: [email protected]

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

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