American Technologies Group Announces More Evidence That Its Bulk Fuel Additive is a Safe Alternative to MTBE.

MONROVIA, Calif.--(BUSINESS WIRE)--Nov. 19, 1998--

U. of Southern California Evaluation Concludes

F420 Poses No DNA-Linked Health Dangers

American Technologies Group, Inc. (OTC BB: ATEG), announced today that an independent evaluation conducted by the University of Southern California concluded that, F420, the company's bulk fuel additive, poses no DNA-linked health dangers. DNA damage, the likely cause of many cancers and serious diseases, is one of the health risks that has been associated with Methyl tertiary Butyl Ether (MTBE), a gasoline oxygenate used to reduce harmful automobile emissions that has created troubling environmental and health concerns in California. This controversy has already led to the decision by three major oil refineries in California Shell, Tosco and Chevron - to discontinue use of MTBE.

Dr. Colin K. Hill, associate professor of radiation oncology and division head of experimental radiotherapy at the University of Southern California, commented on the toxicological evaluation, "We conducted three types of tests and found no evidence that F420 causes primary or secondary damage to DNA. In other words, we consider F420 neither carcinogenic nor contributory to any other DNA-linked diseases."

Lawrence J Brady, president and CEO of American Technologies, added, "The very positive conclusions of this independent evaluation is further validation of our strategy to pursue the commercial use of F420 as the safe, effective alternative to MTBE. Already we have made substantial progress and generated considerable interest in this product, and we believe it is now only a matter of time before we can secure the kind of contract for F420 that will catapult American Technologies revenues."

American Technologies Group is an advanced science and technology company engaged in the development, commercialization and sale of products and systems using its patented and proprietary technologies. Its core technologies are the IE (tm) Crystals technology, Vacuum Distillation water-purification technology and a high-energy particle beam. These technologies have numerous applications in the nuclear, energy, medical, chemical, mining, oil, personal and home care industries. A line of all-natural household cleaning and personal care products containing the company's IE (tm) Crystals Technology are currently marketed by 21st Century Global Network, LLC, a joint venture partially-owned by American Technologies. The company also sells The Force(R), an environmentally safe automotive combustion product based on its IE (tm) Crystals Technology used to improve fuel economy and, over time, reduce carbon deposits. For more information on American Technologies, visit the company's Web site at www.ateg.com. -0- Matters discussed in this release include forward-looking statements that involve risks and uncertainties, and actual results may be materially different. Factors that could cause actual results to differ include activity levels in the securities markets and other risk factors disclosed in the company's reports to the Securities and Exchange Commission, including its Form 10-QSB and Form 10-KSB on file with the SEC.