Profile of granite rock sample with compressive strength of ~36,000 psi.
A full scale, 8 ½” diameter hole was drilled through this sample at TerraTek Drilling Lab at rates ranging 2.5 to 4 times faster than current conventional methods.

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Particle Drilling Technologies Announces Fourth Quarter Conference Call Schedule

HOUSTON, Oct. 28 /PRNewswire-FirstCall/ -- Particle Drilling Technologies, Inc. (Nasdaq: PDRT - News) announced today plans to release 2005 fourth quarter and year-end results on Wednesday, November 9, 2005 after the market closes. In conjunction with the release, Particle Drilling has scheduled a conference call, which will be broadcast live over the Internet on Thursday, November 10, 2005 at 10:00 a.m. eastern time (9:00 a.m. central).

   What:   Particle Drilling Technologies, Inc. Fourth Quarter
           Conference Call and Review of Latest
           Catoosa Test Results

   When:   November 10, 2005 - 10:00 a.m. eastern time

   Where:  Live via phone by dialing 303-262-2143 and asking for
           the Particle Drilling call at least 10 minutes prior
           to the start time.  Investors may also listen to the
           conference live on the Particle Drilling website,
           , on the
           "Investor Relations" section of the site

A telephonic replay of the conference call will be available through November 17, 2005 and may be accessed by calling 303-590-3000 and using passcode 11043355. A web cast archive will also be available at /, on the "Investor Relations" section of the Company's website, shortly after the call and will be accessible for approximately 90 days. For more information, please contact Donna Washburn at DRG&E at 713-529-6600 or email dmw@drg-e.com .

Particle Drilling Technologies, Inc., headquartered in Houston, Texas, is a development stage oilfield service and technology company owning certain patents and pending patents related to the Particle Impact Drilling technology. The Company's technology is designed to enhance the rate-of- penetration function in the drilling process, particularly in hard rock drilling environments.

Certain statements in this press release that are not historical but are forward-looking are subject to known and unknown risks and uncertainties, which may cause PDTI's actual results in future periods to be materially different from any future performance that may be suggested in this press release. Such risks and uncertainties may include, but are not limited to, PDTI's ability to raise equity capital, if necessary, and its ability to obtain equity financing on acceptable terms, if at all, a severe worldwide slowdown in the energy services sector and working capital constraints. Further, PDTI is a development stage company that operates in an industry sector where securities values are highly volatile and may be influenced by economic and other factors beyond PDTI's control such as announcements by competitors and service providers.

Contacts:

J. Chris Boswell, SVP & CFO
Particle Drilling Technologies, Inc.
713-223-3031 ext. 204

Ken Dennard, Managing Partner
Jack Lascar, Partner
DRG&E / 713-529-6600

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