SCHEDULE 13G

Amendment No. 
OHM Corporation
common stock
Cusip # 670839109
Filing Fee: Yes


Cusip # 670839109
Item 1:   Reporting Person - FMR Corp. - (Tax ID:  04-2507163)
Item 4:   Commonwealth of Massachusetts
Item 5:   250,400
Item 6:   None
Item 7:   1,986,273
Item 8:   None
Item 9:   1,986,273
Item 11:  13.00%
Item 12:  HC 




Cusip # 670839109
Item 1:   Reporting Person - Edward C. Johnson 3d - (Tax ID:  ###-##-####)
Item 4:   United States of America
Item 5:   None
Item 6:   None
Item 7:   1,986,273
Item 8:   None
Item 9:   1,986,273
Item 11:  13.00%
Item 12:  IN 




SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS
FILED PURSUANT TO RULE 13d-1(b) or 13d-2(b)


Item 1(a).	Name of Issuer:

		OHM Corporation

Item 1(b).	Name of Issuer's Principal Executive Offices:

		16406 U.S. Route 224 East
		Findlay, OH  45840

Item 2(a).	Name of Person Filing: 

		FMR Corp.

Item 2(b).	Address or Principal Business Office or, if None, Residence:

		82 Devonshire Street, Boston, Massachusetts  02109

Item 2(c).	Citizenship:

		Not applicable

Item 2(d).	Title of Class of Securities:

		Common Stock

Item 2(e).	CUSIP Number:  

		670839109

Item 3.	This statement is filed pursuant to Rule 13d-1(b) or 13d-2(b) and the 
person filing, FMR Corp., is a parent holding company in accordance 
with Section 240.13d-1(b)(ii)(G).  (Note:  See Item 7).

Item 4.	Ownership

		(a)	Amount Beneficially Owned:	1,986,273

		(b)	Percent of Class:	13.00%

		(c)	Number of shares as to which such person has:  

			(i)   sole power to vote or to direct the vote:	250,400

			(ii)  shared power to vote or to direct the vote:	None

			(iii) sole power to dispose or to direct the disposition of:
	1,986,273
 
			(iv)  shared power to dispose or to direct the disposition 
of:	None




Item 5.	Ownership of Five Percent or Less of a Class.

		Not applicable.

Item 6.	Ownership of More than Five Percent on Behalf of Another Person.

		Various persons have the right to receive or the power to 
direct the receipt of dividends from, or the proceeds from 
the sale of, the common stock of OHM Corporation.  The 
interest of one person, Fidelity Contrafund, an investment 
company registered under the Investment Company Act of 1940, 
in the common stock of OHM Corporation, amounted to 
1,353,500 shares or 8.86% of the total outstanding common 
stock at December 31, 1993.  

Item 7.	Identification and Classification of the Subsidiary Which Acquired 
the Security Being Reported on By the Parent Holding Company.

		See attached Exhibit(s) A and B.

Item 8.	Identification and Classification of Members of the Group.

		Not applicable, see attached Exhibit A. 

Item 9.	Notice of Dissolution of Group.

		Not applicable.


Item 10.	Certification.

		By signing below I certify that, to the best of my knowledge and 
belief, the securities referred to above were acquired in the 
ordinary course of business and were not acquired for the purpose 
of and do not have the effect of changing or influencing the 
control of the issuer of such securities and were not acquired in 
connection with or as a participant in any transaction having such 
purpose or effect.


Signature

		After reasonable inquiry and to the best of my knowledge and 
belief, I certify that the information set forth in this statement 
is true, complete and correct. 



	January 10, 1994	
Date



	
Signature



	Arthur S. Loring, Vice President
	
Name/Title




SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS
FILED PURSUANT TO RULE 13d-1(b) or 13d-2(b)

	Pursuant to the instructions in Item 7 of Schedule 13G, Fidelity 
Management & Research Company ("Fidelity"), 82 Devonshire Street, Boston, 
Massachusetts 02109, a wholly-owned subsidiary of FMR Corp. and an 
investment adviser registered under Section 203 of the Investment Advisers 
Act of 1940, is the beneficial owner of 1,735,873 shares or 11.36% of the 
common stock outstanding of OHM Corporation ("the Company") as a result of 
acting as investment adviser to several investment companies registered 
under Section 8 of the Investment Company Act of 1940.  The number of 
shares of common stock of OHM Corporation owned by the  investment 
companies at December 31, 1993 included 208,043 shares of common stock 
resulting from the assumed conversion of $4,993,000 principal amount of 8% 
Convertible Subordinated Debentures (41.667 shares of common stock for each 
$1,000 principal amount of debenture).

	The ownership of one investment company, Fidelity Contrafund, amounted 
to 1,353,500 shares or 8.86% of the common stock outstanding.  Fidelity 
Contrafund has its principal business office at 82 Devonshire Street, 
Boston, Massachusetts 02109.  

	Edward C. Johnson 3d, FMR Corp., through its control of Fidelity, and 
the Funds each has sole power to dispose of the 1,735,873 shares owned by 
the Funds.

	Neither FMR Corp. nor Edward C. Johnson 3d, Chairman of FMR Corp.,  
has the sole power to vote or direct the voting of the Shares owned 
directly by the Fidelity Funds, which power resides with the Funds' Boards 
of Trustees.  Fidelity carries out the voting of the Shares under written 
guidelines established by the Funds' Boards of Trustees.

	Fidelity Management Trust Company, 82 Devonshire Street, Boston, 
Massachusetts 02109, a wholly-owned subsidiary of FMR Corp. and a bank as 
defined in Section 3(a)(6) of the Securities Exchange Act of 1934, is the 
beneficial owner of 250,400 shares or 1.64% of the common stock outstanding 
of the company as a result of its serving as investment manager of the 
institutional account(s). 

	FMR Corp., through its control of Fidelity Management Trust Company, 
has sole voting and dispositive power over 250,400 Shares of common stock 
owned by the institutional account(s) as reported above.

	Edward C. Johnson 3d owns 34.0% of the outstanding voting common stock 
of FMR Corp.  Mr. Johnson 3d is Chairman of FMR Corp.  Various Johnson 
family members and trusts for the benefit of Johnson family members own FMR 
Corp. voting common stock.  These Johnson family members, through their 
ownership of voting common stock, form a controlling group with respect to 
FMR Corp.



SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS
FILED PURSUANT TO RULE 13d-1(b) or 13d-2(b)

RULE 13d-1(e)  AGREEMENT

	The undersigned persons, on January 10, 1994, agree and consent to the 
joint filing on their behalf of this Schedule 13G in connection with their 
beneficial ownership of the common stock of OHM Corporation at December 31, 
1993.

	FMR Corp.
	By	
Arthur S. Loring
Vice President - Legal
		Edward C. Johnson 3d
	By	
Arthur S. Loring
Under Power of Attorney 
dated 5/17/89
On File with Schedule 13G 
for
Airborne Freight Corp. 
9/10/91
	Fidelity Management & Research Company
	By	
Arthur S. Loring
Sr. V.P. and General 
Counsel
	Fidelity Contrafund
	By	
Arthur S. Loring
Secretary