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FILED PURSUANT TO RULE 424(b)(3)
REGISTRATION NO. 333-46183
[LOGO OF INTERNATIONAL [LOGO OF OHM CORPORATION]
TECHNOLOGY CORPORATION]
2790 MOSSIDE BOULEVARD 16046 U.S. ROUTE 224 EAST
MONROEVILLE, PENNSYLVANIA 15146 FINDLAY, OHIO 45840
SUPPLEMENT TO PROXY STATEMENT/PROSPECTUS DATED MAY 11, 1998
May 12, 1998
To the Stockholders of International Technology Corporation
and the Shareholders of OHM Corporation:
The purpose of this Supplement is to inform you that the record dates to
determine those persons eligible to vote at the ITC Special Meeting and the
OHM Special Meeting, each of which was originally set for Monday, May 11,
1998, have been changed to Wednesday, May 20, 1998. All references to the ITC
Record Date and the OHM Record Date in the enclosed Proxy Statement/Prospectus
shall be superseded by this updated information. Certain capitalized terms
herein shall have the meanings given to such terms in the enclosed Proxy
Statement/Prospectus.
Sincerely,
/s/ Anthony J. DeLuca
Anthony J. DeLuca
Chief Executive Officer and President
International Technology Corporation
OHM Corporation
THE DATE OF THIS SUPPLEMENT IS MAY 12, 1998. THIS SUPPLEMENT IS FIRST BEING
MAILED TO STOCKHOLDERS OF ITC AND SHAREHOLDERS OF OHM ON OR ABOUT MAY 13,
1998.
