1 Exhibit 23.01 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our report dated August 4, 1998 included in this Form 10-K into the Company's previously filed Registration Statements on Form S-8, File Nos. 333-20057 and 333-20073. /s/ ARTHUR ANDERSEN LLP Pittsburgh, Pennsylvania August 4, 1998