Roca Closes Over-Allotment Option

Roca Mines Inc. (TSX VENTURE:ROK) ("Roca" or the "Company") announces, further
to its press release of August 7, 2007, that Desjardins Securities Inc. (the
"Underwriter") has exercised its over-allotment option for an additional 613,500
units at a price of $3.18 per unit. In connection with the option exercise, the
Underwriter received an additional 6% cash commission on the gross proceeds of
$1,950,930 and underwriter's warrants to purchase up to 36,810 common shares at
a price of $3.18 per share until August 20, 2008.


Each unit consists of one common share and one-half of one common share purchase
warrant. A whole warrant entitles the holder to acquire one common share at a
price of $4.00 at any time until August 7, 2009. These securities are subject to
a hold period expiring on December 8, 2007.


About Roca Mines Inc.

ROCA Mines Inc. is a mining and exploration company focused on the outstanding
mineral potential located within British Columbia. Roca's primary project is the
MAX Molybdenum Project, permitted and targeting initial production later in
August-2007.


ROCA MINES INC.

David J. Skerlec - Chief Financial Officer