OHM CORP

Q: Mar 31 1998

FY: Dec 31 1997

Q: Sep 30 1997

Q: Jun 30 1997

Q: Mar 31 1997

FY: Dec 31 1997

Q: Sep 30 1997

Q: Jun 30 1997

Q: Mar 31 1997

FY: Dec 31 1996

Q: Nov 14 1996

Q: Aug 14 1996

Q: May 15 1996

FY: Dec 31 1995

Q: Sep 30 1995

Q: Aug 14 1995

Q: May 15 1995

FY: May 2 1995

FY: Mar 31 1995

FY: Mar 31 1995

7

1,7

5,7

5,7

7

2,7

5,7

Current report pursuant to Section 13 or 15(d)

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Certification of termination of registration of a class of securities (Section 12(b))

Certification of termination of registration of a class of securities (Section 12(b))

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

No description available

No description available

No description available

No description available

INTERNATIONAL TECHNOLOGY CORP

INTERNATIONAL TECHNOLOGY CORP

INTERNATIONAL TECHNOLOGY CORP

INTERNATIONAL TECHNOLOGY CORP

INTERNATIONAL TECHNOLOGY CORP

WASTE MANAGEMENT INC /DE/

INTERNATIONAL TECHNOLOGY CORP

WASTE MANAGEMENT INC /DE/

KIRK JOSEPH R

KIRK JAME L

INTERNATIONAL TECHNOLOGY CORP

OHM CORP

OHM CORP

HUIZENGA H WAYNE

INTERNATIONAL TECHNOLOGY CORP

OHM CORP

OHM CORP

INTERNATIONAL TECHNOLOGY CORP

STATE OF WISCONSIN INVESTMENT BOARD

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)