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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
(Rule 13d-102)
Under the Securities Exchange Act of 1934
(Amendment No. 1)*
Mapco Inc.
_______________________________________________________________
(Name of Issuer)
Common Stock
________________________________________________________________
(Title of Class of Securities)
565097102
_____________________________
(CUSIP Number)
Check appropriate box to designate the rule pursuant to which this Schedule is
filed:
[X] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[ ] Rule 13d-1(d)
*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.
The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).
Page 1 of 4 Pages
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CUSIP No. 565097102 13G Page 2 of 4 Pages
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1. NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Barrow, Hanley, Mewhinney & Strauss, Inc.
75-2403190
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(a) [ ]
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
(b) [ ]
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3. SEC USE ONLY
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4. CITIZENSHIP OR PLACE OF ORGANIZATION
A Nevada corporation
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5. SOLE VOTING POWER
NUMBER OF Not Applicable
SHARES ---------------------------------------------------------
BENEFICIALLY 6. SHARED VOTING POWER
OWNED BY Not Applicable
EACH ---------------------------------------------------------
REPORTING 7. SOLE DISPOSITIVE POWER
PERSON Not Applicable
WITH ---------------------------------------------------------
8. SHARED DISPOSITIVE POWER
Not Applicable
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9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
Not Applicable
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10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES [ ]
CERTAIN SHARES (See Instructions)
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11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
Not Applicable
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12. TYPE OF REPORTING PERSON (See Instructions)
IA
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Page 2 of 4 Pages
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SCHEDULE 13G
------------
Item 1(a) Name of Issuer:
Mapco Inc.
1(b) Address of Issuer's Principal Executive Offices:
1800 South Baltimore Ave.
Tulsa, OK 74119
Item 2(a) Name of Person Filing:
Barrow, Hanley, Mewhinney & Strauss, Inc.
2(b) Address of Principal Business Office or, if none, Residence:
One McKinney Plaza
3232 McKinney Avenue, 15th Floor
Dallas, TX 75204-2429
2(c) Citizenship:
A Nevada corporation
2(d) Title of Class of Securities:
Common Stock
2(e) CUSIP Number:
565097102
Item 3 If this statement is filed pursuant to Rules 13d-1(b), or 13d-2(b):
The reporting person is an Investment Adviser registered
under Section 203 of the Investment Advisers Act of 1940.
Item 4 Ownership:
4(a) Amount beneficially owned:
Not Applicable
4(b) Percent of Class:
Not Applicable
4(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote:
Not Applicable
(ii) shared power to vote or to direct the vote:
Not Applicable
Page 3 of 4 Pages
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(iii) sole power to dispose or to direct the disposition of:
Not Applicable
(iv) shared power to dispose or to direct the disposition of:
Not Applicable
Item 5 Ownership of Five Percent or Less of a Class:
If this statement is being filed to report the fact that as of
the date hereof the reporting person has ceased to be the
beneficial owner of more than five percent of the class of
securities, check the following: [X]
Item 6 Ownership of More than Five Percent on Behalf of Another Person:
Not Applicable.
Item 7 Identification and Classification of the Subsidiary which Acquired the
Security Being Reported on by the Parent Holding Company:
Not Applicable.
Item 8 Identification and Classification of Members of the Group:
Not Applicable.
Item 9 Notice of Dissolution of Group:
Not Applicable.
Item 10 Certification:
By signing below the undersigned certifies that, to the best of its
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.
After reasonable inquiry and to the best of its knowledge and belief, the
undersigned certifies that the information set forth in this statement is true,
complete and correct.
BARROW, HANLEY, MEWHINNEY &
STRAUSS, INC.
By: /s/ Bryant M. Hanley, Jr.
Name: Bryant M. Hanley, Jr.
Title: President
February 11, 1999
Page 4 of 4 Pages
