Uranium Exploration (U3O8)

[NYBob]

Mesa Uranium Begins Step-Out Drilling on Uranium Discovery - CCN Matthews -
VANCOUVER, BRITISH COLUMBIA--(Marketwire - Oct. 4, 2007) -

Mesa Uranium Corp. ("Mesa") -
(TSX VENTURE:MZU) is pleased to announce that step-out drilling
around discovery drill hole L-15 has commenced.
This drilling is within our 100%-owned Lisbon Valley uranium -
property in Southeastern Utah.

The principal goal of this step-out drilling is to delineate
additional mineralization and to confirm lateral continuity
in the area surrounding the recently drilled L-15
discovery drill hole.
The secondary goal is to strengthen our geologic understanding
of the zone to aid in directing further
step-out drilling efforts.

As previously reported (news release dated 9/10/2007) drill
hole L-15 intercepted three strongly mineralized
zones consisting of, top to bottom:

- 1.5 feet of 0.13% U3O8 (2.6 pounds/ton);

- 1.0 foot of 0.16% U3O8 (3.2 pounds/ton); and

- 3.5 feet of 0.28% U3O8 (5.6 pounds/ton);

All three higher-grade intercepts resulted in an overall
mineralized interval of 17.5 feet grading 0.11%
U3O8 (2.2 pounds/ton).
The mineralization in L-15 is similar to the material mined
at the Lisbon Mine, the District's largest mine
(22 million pounds of U3O8).
L-15 was drilled 8,000 feet east of the Lisbon Mine
in an un-drilled area along Mesa's projected southeast
to northwest trend.

Mesa is pursuing the concept that 1/2 of the Lisbon Valley
District has remained buried and undiscovered on
the down-faulted, eastern flank of the Lisbon Valley
anticline.
Wildcat drilling in 1968 validated the concept of ore
deposits on the downthrown side with the discovery of
the District's largest mine, the Lisbon Mine,
which produced 22 million pounds of U3O8 at
a grade of 0.4% U3O8. Ore deposits in
the District were flat-lying, elongate,
tabular deposits averaging 200-500 feet in width
and 1,000 to 3,000 feet in length.
These deposits pre-date all faulting and are not
structurally controlled.

About Mesa Uranium

Mesa Uranium Corp.
is a uranium exploration company focused on proven
uranium districts in the western United States.
Mesa's lead project is the 100%-owned, 30 square mile
Lisbon Valley project in the Lisbon Valley Mining
District in Utah.
The District produced over 85 million pounds of U3O8,
at some of the highest uranium grades in
the United States, averaging 0.4% U3O8.
The Lisbon Valley Mining District is located in
the Colorado Plateau region, 30 miles south of Moab,
in San Juan County, Utah.
For further information about Mesa Uranium
please visit our website at
http://www.mesauranium.com

Qualified Person

This Press Release has been prepared and revised under
the supervision of Gregory French, P. Geo., Technical
Advisor for Mesa, a Qualified Person as defined by
National Instrument 43-101 guidelines.

ON BEHALF OF THE BOARD

MESA URANIUM CORP.

Foster Wilson, President and CEO

This news release includes certain statements that may be deemed "forward-looking statements". All statements in this release, other than statements of historical facts, including the likelihood of commercial mining and possible future financings are forward-looking statements. Although the Company believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results or developments may differ materially from those in the forward-looking statements. Factors that could cause actual results to differ materially from those in forward-looking statements include unsuccessful exploration results, changes in metals prices, changes in the availability of funding for mineral exploration, unanticipated changes in key management personnel and general economic conditions. Mining is an inherently risky business. Accordingly the actual events may differ materially from those projected in the forward-looking statements. For more information on the Company and the risks and challenges of its business, investors should review the Company's annual filings that are available at www.sedar.com.


FOR FURTHER INFORMATION PLEASE CONTACT:

Mesa Uranium Corp.
Wayne Marsden

Toll Free: 1-866-337-1235

Website:
http://www.mesauranium.com


The TSX Venture Exchange has neither approved nor disapproved of the contents of this news release.


Source: CCN Matthews (October 4, 2007 - 1:01 PM EDT)

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