Particle Drilling Technologies, Inc. to Release
Quarterly Results on Monday, May 9, 2005

Houston, Texas--(BUSINESS WIRE)—April 26, 2005—Particle Drilling Technologies, Inc. (PDRT.OB) will release financial and operating results on Monday, May 9, 2005 after the market closes, for the second quarter of its 2005 fiscal year ending September 30, 2005.

The Company has scheduled a conference call to discuss the financial results and to provide an update on its research and development activities on Tuesday, May 10th, at 8:00 a.m. central time. The dial-in number to participate is 866-760-7291, requiring passcode 755474.

A recording of the conference call will be available on the Company’s website at / beginning Wednesday, May 11, 2005 until the close of business Tuesday, May 31, 2005.

About Particle Drilling Technologies, Inc.

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

Contact:

For further information please contact: J. Chris Boswell, Chief Financial Officer, Particle Drilling Technologies, Inc. +1-713-223-3031x204, ;