Investor Relations

Particle Drilling Technologies, Inc. shares of common stock are listed on The NASDAQ Small Cap Market under the symbol "PDRT." Prior to June 28, 2005 the Company's shares traded over the counter under the symbol "PDRT.OB".

Particle Drilling Technologies, Inc. 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 expected to significantly enhance the rate-of-penetration function in the drilling process, particularly in hard rock drilling environments.  PDTI intends to develop and exploit this technology by commercializing the Particle Impact Drilling system and through a unique contracting strategy. PDTI is headquartered in Houston.

Contact Investor relations by telephone at 713-223-3031 or by .  You may also write us at:

Corporate Office
Particle Drilling Technologies, Inc.
5611 Baird Ct.
Houston, Texas 77041
Telephone: 713-223-3031
Facsimile:  713-224-6361

Transfer Agent
Computershare Trust Company, Inc.
350 Indiana Street, Suite 800
Golden, CO 80401
Telephone: 303-262-0600
Facsimile: 303-262-0700
http://www.computershare.com/
DenTeam2@computershare.com

Independent Accountants:
UHY Mann Frankfort Stein & Lipp CPAs, LLP
Houston, Texas

Legal Counsel:
Vinson & Elkins LLP
Houston, Texas

Investor Relations Firm:
Kenneth S. Dennard
Stephen B. Gray
Dennard Rupp Gray & Easterly, LLC
Telephone: 713-529-6600
http://www.drg-e.com/

Whistleblower Hotline:
877-809-2070