VANCOUVER, Canada, September 13 /PRNewswire/ --     United Bolero Development Corp. (the
"Company" or "United Bolero"), (TSX-V: UNB) is pleased to provide an update 
on the 1,890 metre (6,200 feet) diamond drill program currently underway at
Cannivan Gulch. The Cannivan Gulch property is located approximately 30 miles
southwest of Butte, Montana and was previously explored between the years 
1968 and 1981 by Cyprus-Amax, Amoco Minerals and others. United Bolero has 
an option to acquire a 100% interest in the property which consists of
15 original unpatented claims covering 300 acres plus an additional 600 
acres covered by an additional 30 claims.

Diamond Drill Program:

----------------------

Drilling at Cannivan Gulch was delayed by a series of obstacles including
a longer than expected permitting process, and the lack of helicopters due to
wild fires in the area. However, we are pleased to announce that a core
drilling rig provided by Ruen Drilling, Inc. of Clark Fork, Idaho was lifted
by helicopter onto the first drill site at an elevation of approximately
9,000 feet on September 7, 2007. Water lines, pumps and other support
facilities were installed by September 11 and drilling commenced on hole
CG07-1 on September 12, 2007. Drilling is being conducted by two crews, each
working ten- to twelve- hour shifts per day.

The present drilling program on the Cannivan Gulch property is designed
to confirm previous drill results by drilling a twinned hole and to fill-in
and expand the existing non-compliant resource. New hole CG07-1 will twin
historical hole CG-1 which contained molybdenum mineralization starting at 
the surface in the north-central portion of the historically identified
mineralization. We anticipate that this hole will have a total depth of
approximately 500 feet. New hole CG07-2 is designed to test the limits of
near-surface mineralization and to fill-in mineralization recognized at depth
in previous drill holes in the northern portion of the historical
mineralization. New holes CG07-3 and CG07-4 are designed as in-fill holes in
the south-central and southern portions of the mineralization, respectively.

Core Logging and Assaying:

-------------------------

The core is being sawed, photographed, and geologically logged at United
Bolero's core facility located in Silver City, Montana, approximately
nine miles east of the Bald Butte property. One half of each sample interval
is being shipped to ALS Chemex Laboratories for analysis. On July 11, 2007 
the Company shipped 286 metres (938 feet) of core to ALS Chemex Laboratories 
in Nevada and anticipates results within the next three weeks.

Previous Work on Cannivan Gulch:

-------------------------------

Previous work by Cyprus Exploration Company included a detailed
exploration program consisting of 55 core holes totaling 88,450 feet drilled
and 2,514 feet of underground development completed. Based on the results of
these earlier exploration programs, a non NI 43-101 compliant resource was
estimated by Amoco Minerals Company, in June 1982, at 300 million tons 
grading 0.06% Molybdenum ("Mo") containing 360,000,000 pounds of Mo. This 
historical resource was calculated at a 0.03% Mo cut-off resulting in a 
preliminary pit design with a 0.97:1 strip ratio. This historic resource 
estimate quoted above, is considered to be relevant and is believed to be 
reliable based on the amount and quality of historic work completed. The 
Company has not completed the work necessary to independently verify the 
classification of the mineral resource estimates. The Company is not treating 
the mineral resource estimates as National Instrument 43-101 defined 
resources verified by a qualified person. The historical estimates should not 
be relied upon. The properties will require considerable further evaluation 
which the Company's management and consultants intend to carry out in due 
course.

- Higher grades within the deposit

    - Previous drilling indicates that the potential exists for a high
      grade core zone at depth
    - Historic Drill Hole CG-22 which was drilled in the central core
      zone in 1974 intersected 1,510 feet (from 250 feet to 1,760 feet)
      at 0.12% Mo including 270 feet (from 580 feet to 850 feet) at 0.21%
      Mo. (CMS laboratory as reported by Cyprus/Amoco Minerals.)
    - An adit and cross cut totaling more than 2,500 feet was driven by
      Cyprus/Amoco Minerals in 1980 to obtain bulk samples for
      metallurgical testing and to allow grab and channel sampling
      through the deposit



John Childs, Ph.D., Registered Geo (AZ) is the "qualified person" (as
such term is defined by NI 43-101) responsible for the preparation of the
technical information in this release.

United Bolero is a well funded exploration and development Company which
holds 100% interests in 2 significant molybdenum properties located in
Montana, USA. The Company is listed on the TSX-Venture Exchange under the
symbol UNB, as well as the Frankfurt Exchange under U7N. For more 
information, please visit http://www.unitedbolero.com or call toll-free 
888-945-4770.

On behalf of the Board of Directors

"R. Bruce Duncan"

President & CEO

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

http://www.renmarkfinancial.com