Hornby Bay Drilling Begins

Pitchstone Exploration Ltd. (TSX-V: PXP) (Pitchstone) and Triex Minerals Corporation (TSX-V: TXM) (Triex) are pleased to announce that drilling has started at their Mountain Lake uranium deposit in the Hornby Bay Basin, Nunavut.  The main objective of this year’s program is to locate additional deposits.

The 50:50 joint venture is actively exploring five properties in the Hornby Bay Basin, including its Mountain Lake uranium deposit, with land holdings in the region totaling approximately 221,000 hectares.  The Mountain Lake uranium deposit is located 100 km southwest of the coastal community of Kugluktuk, Nunavut.

The 2007 exploration budget for the Hornby Bay Basin properties is $2.3 million, mostly for drilling.  A total of 5,000 metres of diamond drilling has been contracted to Connors Drilling Ltd.  Re-opening of the Kirwin Lake camp and mobilization of all equipment were completed in April.  Drilling at Zargut Lake commenced on May 8 where a minimum of three holes is planned to test the extension of the Mountain Lake deposit to the north.  Four holes are planned at Helmut Lake and sixteen holes at Dismal Lake.  Drilling is expected to be completed about the end of June.

The Mountain Lake deposit contains the only identified uranium resource in the Hornby Bay Basin.  An Inferred Resource of 8.2 million pounds U₃O₈ with an average grade of 0.23% U₃O₈ contained in 1.6 million tonnes of rock has been estimated (see NI 43-101 Technical Report on SEDAR)
 

Allan Armitage, Ph.D., P.Geo., is a Qualified Person as defined by National Instrument 43-101 and is responsible for program design and quality control of exploration undertaken by Triex, the project operator, in the Hornby Bay Basin.

Pitchstone is actively exploring for uranium in four proven districts.  In addition to the five joint venture projects with Triex in the Hornby Bay Basin, Nunavut and NWT, the property portfolio features eight projects in the eastern Athabasca Basin, Saskatchewan, five of which are joint ventured with sxr Uranium One Inc., with the other three being 100% owned.  In addition, there is an exploration partnership with Cameco and Motapa Diamonds in the Franceville Basin, Gabon, and an option on three projects in Namibia.  Pitchstone has a unique group of geologists with extensive uranium exploration and production experience.

On behalf of the Board,

E.A.G. (Ted) Trueman, CEO and Director

For further information contact:  Ted Trueman, CEO, Pitchstone Exploration (604) 630 5563 ted@pitchstone.net, or

Dan Barnholden, CEO, Blueprint Investor Relations Consulting (416) 625 2334, dbarnholden@blueprintir.com,

The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of this release.  This news release may contain assumptions, estimates, and other forward-looking statements regarding future events.  Such forward-looking statements involve inherent risks and uncertainties and are subject to factors, many of which are beyond the Company’s control, that may cause actual results or performance to differ materially from those currently anticipated in such statements.