ADE Shareholders Approve Merger Transaction with KLA-Tencor.

WESTWOOD, Mass. -- ADE Corporation (NasdaqGM: ADEX) today announced that its shareholders approved the proposed merger transaction under which KLA-Tencor Corporation (NasdaqGS: KLAC) will acquire ADE for cash consideration of $32.50 per share. The proposal was adopted at a special shareholders meeting held earlier today, with 99% of all votes cast in favor, which is the equivalent of 73% of the issued and outstanding ADE shares. E[acute accent]A closing date will be established once the parties have cleared or waived all conditions to close, including regulatory clearance from the German antitrust authorities, who as previously reported, notified KLA-Tencor on Monday, July 10, 2006 of the commencement of a Phase II investigation of the proposed merger. Both ADE and KLA-Tencor continue to be confident that the acquisition will be completed once German antitrust clearance is obtained.

E[acute accent]About ADE Corporation

E[acute accent]ADE Corporation is a leading supplier of metrology and inspection systems for the semiconductor wafer, semiconductor device, magnetic data storage and optics manufacturing industries. The Company's systems analyze and report product quality at critical manufacturing steps for yield enhancement, providing quality certification data that is relied upon by semiconductor wafer, device and computer disk manufacturers. The Company's systems also are used for production measurements in the semiconductor chip fabrication process. To learn more about ADE, visit the Company's Web site at www.ade.com, which is not a part of this release.

E[acute accent]Cautionary Statement Regarding Forward-Looking Statements 

E[acute accent]This news release contains certain forward-looking statements within the meaning of the "safe harbor" provisions of the United States Private Securities Litigation Reform Act of 1995 and federal securities law. Such forward-looking statements are subject to known and unknown risks and uncertainties that could cause actual results to differ materially from those expressed or implied by such statements. Those statements that make reference to expectations, predictions, beliefs, and assumptions should be considered forward-looking statements. These statements include, but are not limited to, those associated with the expected closing time for the proposed merger and the obtaining of clearance from German antitrust authorities. These statements involve risks and uncertainties including those associated with the failure of ADE shareholders to approve the proposed merger; delays in obtaining, or adverse conditions contained in, the German antitrust authorities' regulatory approvals; failure to consummate or delay in consummating the proposed merger for other reasons, changes in laws or regulations and other similar factors. Further information on potential factors that could affect KLA-Tencor's or ADE Corporation's respective businesses is contained in their reports on file with the Securities and Exchange Commission ("SEC"), including their respective Form 10-K's. KLA-Tencor and ADE are under no obligation to (and expressly disclaim any such obligation to) update or alter their respective forward-looking statements whether as a result of new information, future events or otherwise.