EXHIBIT 24

POWER OF ATTORNEY

The undersigned directors and officers of OHM Corporation, an Ohio
corporation (the "Company"), do hereby make, constitute and appoint Pamela K.M.
Beall, Kris E. Hansel, and Steven E. Harbour, and each of them, with full power
of substitution and resubstitution, as attorneys or attorney of the undersigned,
to execute and file, under the Securities Exchange Act of 1934, as amended, the
Company's Annual Report on Form 10-K, for the year ended December 31, 1997 and
all amendments or exhibits thereto, and any and all applications or other
documents to be filed with the Securities and Exchange Commission pertaining to
such Annual Report, with full power and authority to do and perform any and all
acts and things whatsoever necessary, appropriate or desirable to be done in the
premises, or in the name, place and stead of the said directors and officers,
hereby ratifying and approving the acts of said attorneys and any of them and
any substitute. This action may be executed in multiple counterparts, each of
which shall be deemed an original with respect to the person executing it.

IN WITNESS WHEREOF, the undersigned have subscribed these presents as
of the 26th day of February, 1998.

/s/ James L. Kirk /s/ Herbert A. Getz
- --------------------------------------- ---------------------------------------
James L. Kirk, Chairman of the Board Herbert A. Getz, Director
of Directors, President and
Chief Executive Officer /s/ Ivan W. Gorr
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Ivan W. Gorr, Director
/s/ Philip O. Strawbridge
- --------------------------------------- /s/ Charles D. Hollister
Philip O. Strawbridge, Vice President, ---------------------------------------
Chief Financial and Administrative Charles D. Hollister, Director
Officer (Principal Financial Officer)
/s/ William P. Hulligan
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/s/ Kris E. Hansel William P. Hulligan, Director
- ---------------------------------------
Kris E. Hansel, /s/ Joseph R. Kirk
Vice President and Controller Joseph R. Kirk, Director
(Principal Accounting Officer)

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James E. Koenig, Director

/s/ Richard W. Pogue
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Richard W. Pogue, Director

/s/ Charles W. Schmidt
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Charles W. Schmidt, Director