Material Technologies, Inc. Successfully Conducts Beta Tests on California, New York, and Ohio Bridges
Monday September 27, 9:30 am ET

LOS ANGELES--(BUSINESS WIRE)--Sept. 27, 2004--Material Technologies, Inc. (MATECH) (OTCBB:MTNA - News) today announced that it has successfully completed beta tests (testing before commercial release) of its crack detection Electrochemical Fatigue Sensor (EFS) technology on several bridges. These tests successfully demonstrated its value for bridge inspection.

Four bridges were tested: two in California: Culver City, a suburb of Los Angeles, and Sacramento; one in New York, in Babylon on Long Island; and one in Ohio, near Dayton.

The Ohio Bridge has known cracks, and their presence clearly showed up in our EFS data. The Sacramento bridge also has known cracks, which also clearly showed up. Several "truth specimens," thin pieces of bridge steel, some of which had built-in but not visible cracks and some without, as part of a blind test, were adhered to the steel structure. EFS accurately identified those with cracks.

For each of these bridges the EFS sensors were placed at presumed fatigue-critical locations, i.e., those areas most likely to have fatigue cracks, and a heavy truck or trains traversed the bridge to induce significant loads. Except for Culver City, each bridge also had strain gauges installed to monitor stress levels at these critical locations. Each bridge was cross-checked using an eddy current non-destructive test to verify the EFS findings. In one location, the eddy current did not find a crack found by the EFS.

No cracks were detected in either the Culver City or New York bridges by EFS or the eddy current. Since their measured stresses were well below levels that would induce fatigue cracks, the absence of cracks in each bridge was not unexpected.

"These beta tests are a very important step in our development, demonstrating the value of EFS technology for bridge inspection, and we are very pleased to have the interest and support of the cognizant engineering authorities. These efforts are in preparation for the inspection of the bridges in Pennsylvania, as previously announced in the press release dated December 9, 2003," said Robert M. Bernstein, Matech's President and Chief Executive Officer.

MATECH is engaged in the research and development of metal fatigue detection, measurement, and monitoring technologies. As such, the Company has developed a suite of devices for the non-destructive testing (NDT) of metal fatigue and monitoring of structural integrity. These technologies can be applied in virtually any industry in which metal is a significant structural component; i.e.: Bridges, Aerospace, Turbine Engines, Oil & Gas, Construction, Shipping, etc.

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995: Statements in this document looking forward in time involve risks and uncertainties, and therefore 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 such as customer order rates, cancellations, late delivery of customer components, late system delivery, production delays, dependence upon certain customers, dependencies upon key executives, competition, product liability risk, control by management, and other risks detailed in the applicable U.S. Securities and Exchange Commission requirements.

Contact:
Material Technologies, Inc.
Robert M. Bernstein, 310-208-5589

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