Particle Drilling Technologies, Inc.  



Hardened steel particles
(50-55 Rc) entrained with drilling mud at ~2% by volume strike the formation approximately 4.8 million times per minute.


Particle Drilling Technologies, Inc. Registration Statement Declared Effective

HOUSTON, June 29 /PRNewswire-FirstCall/ -- Particle Drilling Technologies, Inc. (Nasdaq: PDRT) ("PDTI") today announced that its registration statement originally filed on April 7, 2005 with the Securities and Exchange Commission to register the resale, from time to time, of 14,131,538 shares of its common stock by selling shareholders named in the registration statement has been declared effective.

The registration statement was filed pursuant to registration rights that the company had granted to certain of its stockholders. As a result of the registration statement becoming effective, the rights to purchase up to 2,700,000 shares of common stock pursuant to certain previously granted warrants have been terminated according to the provisions of the warrant agreement.

This press release shall not constitute an offer to sell or the solicitation to buy, nor shall there be any sale of these securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such jurisdiction.

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