THIS PAPER DOCUMENT IS BEING SUBMITTED PURSUANT
TO RULE 902(g) OF REGULATION S-T
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13D
(Amendment No. 1)
Under the Securities Exchange Act of 1934
Magma Copper Company
(Name of Issuer)
Common Stock
(Title of Class and Securities)
559177209
(CUSIP Number of Class of Securities)
James E. McKee, Gabelli Funds, Inc.,
One Corporate Center, Rye, New York 10580-1434, (914)921-5294
(Name, Address and Telephone Number of Person Authorized
to Receive Notices and Communications)
December 28, 1995
(Date of Event Which Requires Filing of this Statement)
If the filing person has previously filed a statement on Schedule
13G to report the acquisition which is the subject of this State-
ment because of Rule 13D-1(b)(3) or (4), check the following box:
____
/___/
Check the following box if a fee is being paid with this Statement:
_____
/ /
<PAGE>
_________________________________________________________________
CUSIP No. 559177209 13D
_________________________________________________________________
(1) NAMES OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Gabelli Funds, Inc. I.D. No. 13-3056041
_________________________________________________________________
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
____
(a) /___/
____
(b) /___/
_________________________________________________________________
(3) SEC USE ONLY
_________________________________________________________________
(4) SOURCE OF FUNDS*
OO-Funds of investment company clients
_________________________________________________________________
(5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) _____
/ /
_________________________________________________________________
(6) CITIZENSHIP OR PLACE OF ORGANIZATION
New York
_________________________________________________________________
: (7) SOLE VOTING POWER
: 1,900,419 (Item 5)
:________________________
: (8) SHARED VOTING POWER
NUMBER OF SHARES BENEFICIALLY : None (Item 5)
OWNED BY EACH REPORTING :________________________
PERSON WITH : (9) SOLE DISPOSITIVE
: POWER
: 1,900,419 (Item 5)
:________________________
:(10) SHARED DISPOSITIVE
: POWER
: None (Item 5)
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,900,419 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
EXCLUDES CERTAIN SHARES* _____
/ x /
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
3.96%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
HC, IA, CO
_________________________________________________________________
*SEE INSTRUCTIONS BEFORE FILLING OUT!
_____________________________________
CUSIP No. 559177209 13D
_________________________________________________________________
(1) NAMES OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
GAMCO Investors, Inc. I.D. No. 13-2951242
_________________________________________________________________
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
____
(a) /___/
____
(b) /___/
_________________________________________________________________
(3) SEC USE ONLY
_________________________________________________________________
(4) SOURCE OF FUNDS*
OO-Funds of investment advisory clients
_________________________________________________________________
(5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) _____
/ x /
_________________________________________________________________
(6) CITIZENSHIP OR PLACE OF ORGANIZATION
New York
_________________________________________________________________
: (7) SOLE VOTING POWER
: 1,280,500 (Item 5)
:________________________
: (8) SHARED VOTING POWER
NUMBER OF SHARES BENEFICIALLY : None
OWNED BY EACH REPORTING :________________________
PERSON WITH : (9) SOLE DISPOSITIVE
: POWER
: 1,451,218 (Item 5)
:________________________
:(10) SHARED DISPOSITIVE
: POWER
: None
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,451,218 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
EXCLUDES CERTAIN SHARES* ____
/___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
3.03%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
IA, CO
_________________________________________________________________
*SEE INSTRUCTIONS BEFORE FILLING OUT!
______________________________________
CUSIP No. 559177209 13D
_________________________________________________________________
(1) NAMES OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Gabelli Performance Partnership L.P. I.D. No. 13-3396569
_________________________________________________________________
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
____
(a) /___/
____
(b) /___/
_________________________________________________________________
(3) SEC USE ONLY
_________________________________________________________________
(4) SOURCE OF FUNDS*
WC
_________________________________________________________________
(5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) ____
/___/
_________________________________________________________________
(6) CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
_________________________________________________________________
: (7) SOLE VOTING POWER
: 244,975 (Item 5)
:________________________
: (8) SHARED VOTING POWER
NUMBER OF SHARES BENEFICIALLY : None
OWNED BY EACH REPORTING :________________________
PERSON WITH : (9) SOLE DISPOSITIVE
: POWER
: 244,975 (Item 5)
:________________________
:(10) SHARED DISPOSITIVE
: POWER
: None
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
244,975 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
EXCLUDES CERTAIN SHARES* ____
/___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
0.51%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
PN
_________________________________________________________________
*SEE INSTRUCTIONS BEFORE FILLING OUT!
____________________________________
CUSIP No. 559177209 13D
_________________________________________________________________
(1) NAMES OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Gabelli International Limited I.D. No. Foreign Corporation
_________________________________________________________________
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
____
(a) /___/
____
(b) /___/
_________________________________________________________________
(3) SEC USE ONLY
_________________________________________________________________
(4) SOURCE OF FUNDS*
WC
_________________________________________________________________
(5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) ____
/___/
_________________________________________________________________
(6) CITIZENSHIP OR PLACE OF ORGANIZATION
British Virgin Islands
_________________________________________________________________
: (7) SOLE VOTING POWER
: 97,475 (Item 5)
:________________________
: (8) SHARED VOTING POWER
NUMBER OF SHARES BENEFICIALLY : None
OWNED BY EACH REPORTING :________________________
PERSON WITH : (9) SOLE DISPOSITIVE
: POWER
: 97,475 (Item 5)
:________________________
:(10) SHARED DISPOSITIVE
: POWER
: None
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
97,475 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
EXCLUDES CERTAIN SHARES* ____
/___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
0.20%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
CO
_________________________________________________________________
*SEE INSTRUCTIONS BEFORE FILLING OUT!
____________________________________
CUSIP No. 559177209 13D
________________________________________________________________
(1) NAMES OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Gabelli International II Limited I.D. No. Foreign
Corporation
_________________________________________________________________
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
____
(a) /___/
____
(b) /___/
_________________________________________________________________
(3) SEC USE ONLY
_________________________________________________________________
(4) SOURCE OF FUNDS*
WC
_________________________________________________________________
(5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) ____
/___/
_________________________________________________________________
(6) CITIZENSHIP OR PLACE OF ORGANIZATION
British Virgin Islands
_________________________________________________________________
: (7) SOLE VOTING POWER
: 132,875 (Item 5)
:________________________
: (8) SHARED VOTING POWER
NUMBER OF SHARES BENEFICIALLY : None
OWNED BY EACH REPORTING :________________________
PERSON WITH : (9) SOLE DISPOSITIVE
: POWER
: 132,875 (Item 5)
:________________________
:(10) SHARED DISPOSITIVE
: POWER
: None
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
132,875 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
EXCLUDES CERTAIN SHARES* ____
/___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
0.28%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
CO
_________________________________________________________________
*SEE INSTRUCTIONS BEFORE FILLING OUT!
____________________________________
CUSIP No. 559177209 13D
_________________________________________________________________
(1) NAMES OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Gabelli Associates Fund I.D. No. 13-3246203
_________________________________________________________________
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
____
(a) /___/
____
(b) /___/
_________________________________________________________________
(3) SEC USE ONLY
_________________________________________________________________
(4) SOURCE OF FUNDS*
WC
_________________________________________________________________
(5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) ____
/___/
_________________________________________________________________
(6) CITIZENSHIP OR PLACE OF ORGANIZATION
New York
_________________________________________________________________
: (7) SOLE VOTING POWER
: 45,233 (Item 5)
:________________________
: (8) SHARED VOTING POWER
NUMBER OF SHARES BENEFICIALLY : None
OWNED BY EACH REPORTING :________________________
PERSON WITH : (9) SOLE DISPOSITIVE
: POWER
: 45,233 (Item 5)
:________________________
:(10) SHARED DISPOSITIVE
: POWER
: None
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
45,233 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
EXCLUDES CERTAIN SHARES* ____
/___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
0.09%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
CO
_________________________________________________________________
*SEE INSTRUCTIONS BEFORE FILLING OUT!
______________________________________
CUSIP No. 559177209 13D
_________________________________________________________________
(1) NAMES OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Mario J. Gabelli I.D. No. ###-##-####
_________________________________________________________________
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
____
(a) /___/
____
(b) /___/
_________________________________________________________________
(3) SEC USE ONLY
_________________________________________________________________
(4) SOURCE OF FUNDS*
OO-Funds of family foundation
_________________________________________________________________
(5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) ____
/ /
_________________________________________________________________
(6) CITIZENSHIP OR PLACE OF ORGANIZATION
USA
_________________________________________________________________
: (7) SOLE VOTING POWER
: 10,000 (Item 5)
:________________________
: (8) SHARED VOTING POWER
NUMBER OF SHARES BENEFICIALLY : None
OWNED BY EACH REPORTING :________________________
PERSON WITH : (9) SOLE DISPOSITIVE
: POWER
: 10,000 (Item 5)
:________________________
:(10) SHARED DISPOSITIVE
: POWER
: None
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
10,000 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
EXCLUDES CERTAIN SHARES* _____
/ x /
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
0.02%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
IN
_________________________________________________________________
*SEE INSTRUCTIONS BEFORE FILLING OUT!<PAGE>
Item 1.Security and Issuer
This Amendment No. 1 to Schedule 13D on Magma Copper
Company (the "Issuer") is being filed on behalf of the
undersigned to amend the Schedule 13D, as amended (the "Schedule
13D") which was originally filed on December 13, 1995. This
Amendment is being filed to include Item 4 which was
inadvertently omitted from the Schedule 13D. Unless otherwise
indicated, all capitalized terms used herein shall have the same
meaning as set forth in the Schedule 13D.
Item 4. Purpose of Transaction
Each of the Reporting Persons, with the exceptions of
Lynch and its affiliates, has purchased and holds the Securities
reported by it for investment for one or more accounts over which
it has shared, sole, or both investment and/or voting power, for
its own account, or both.
The Reporting Persons, with the exceptions of Lynch and
its affiliates, are engaged in the business of securities
analysis and investment and pursue an investment philosophy of
identifying undervalued situations. In pursuing this investment
philosophy, the Reporting Persons analyze the operations, capital
structure and markets of companies in which they invest,
including the Issuer, on a continuous basis through analysis of
documentation and discussions with knowledgeable industry and
market observers and with representatives of such companies
(often at the invitation of management). The Reporting Persons do
not believe they possess material inside information concerning
the Issuer. As a result of these analytical activities one or
more of the Reporting Persons may issue analysts reports,
participate in interviews or hold discussions with third parties
or with management in which the Reporting Person may suggest or
take a position with respect to potential changes in the opera-
tions, management or capital structure of such companies as a
means of enhancing shareholder values. Such suggestions or
positions may relate to one or more of the transactions specified
in clauses (a) through (j) of Item 4 of the Schedule 13D form,
including, without limitation, such matters as disposing of one
or more businesses, selling the company or acquiring another
company or business, changing operating or marketing strategies,
adopting or not adopting, certain types of anti-takeover measures
and restructuring the company's capitalization or dividend poli-
cy.
Each of the Reporting Persons intends to adhere to the
foregoing investment philosophy with respect to the Issuer. How-
ever, none of the Reporting Persons intends to seek control of
the Issuer or participate in the management of the Issuer, and
any Reporting Person that is registered as an investment company
under the l940 Act will participate in such a transaction only
following receipt of an exemption from the SEC under Rule l7D-l
under the l940 Act, if required, and in accordance with other
applicable law. In pursuing this investment philosophy,
each Reporting Person will continuously assess the Issuer's
business, financial condition, results of operations and
prospects, general economic conditions, the securities markets in
general and those for the Issuer's securities in particular,
other developments and other investment opportunities, as well as
the investment objectives and diversification requirements of its
shareholders or clients and its fiduciary duties to such
shareholders or clients. Depending on such assessments, one or
more of the Reporting Persons may acquire additional Securities
or may determine to sell or otherwise dispose of all or some of
its holdings of Securities. Although the Reporting Persons share
the same basic investment philosophy and although portfolio
decisions are made by or under the supervision of Mr. Gabelli,
the investment objectives and diversification requirements of
various clients differ from those of other clients so that one or
more Reporting Persons may be acquiring Securities while others
are disposing of Securities.
With respect to voting of the Securities, the Reporting
Persons have adopted general voting policies relating to voting
on specified issues affecting corporate governance and sharehold-
er values. Under these policies, the Reporting Persons generally
vote all securities over which they have voting power in favor of
cumulative voting, financially reasonable golden parachutes, one
share one vote, management cash incentives and pre-emptive rights
and against greenmail, poison pills, supermajority voting, blank
check preferred stock and super-dilutive stock options.
Exceptions may be made when management otherwise demonstrates
superior sensitivity to the needs of shareholders. In the event
that the aggregate voting position of all joint filers shall
exceed 25% of the total voting position of the issuer then the
proxy voting committees of each of the Funds shall vote their
Fund's shares independently.
Each of the Covered Persons who is not a Reporting
Person has purchased the Securities reported herein as benefi-
cially owned by him for investment for his own account or that of
one or more members of his immediate family. Each such person may
acquire additional Securities or dispose of some or all of the
Securities reported herein with respect to him.
Other than as described above, none of the Reporting
Persons and none of the Covered Persons who is not a Reporting
Person has any present plans or proposals which relate to or
would result in any transaction, change or event specified in
clauses (a) through (j) of Item 4 of the Schedule 13D.
<PAGE>
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.
Dated: December 28, 1995
GABELLI FUNDS, INC.
By: _______________________
James E. McKee
General Counsel
GAMCO INVESTORS, INC.
By:___________________________
Douglas R. Jamieson
Executive Vice President and
Chief Operating Officer
MARIO J. GABELLI
By:_________________________
James E. McKee
Attorney-in-Fact
GABELLI PERFORMANCE
PARTNERSHIP, L.P.
By:_______________________
Mario J. Gabelli
General Partner
by: James E. McKee
Attorney-in-Fact
<PAGE>
GABELLI ASSOCIATES LIMITED
By:_________________________
Gabelli Securities, Inc.
Investment Manager
by: James E. McKee
Attorney-in-Fact
GABELLI INTERNATIONAL
II LIMITED
By:__________________________
Mario J. Gabelli, Chairman
and Investment Manager
by: James E. McKee
Attorney-in-Fact
GABELLI INTERNATIONAL LIMITED
By:__________________________
Mario J. Gabelli, Chairman
and Investment Manager
by: James E. McKee
Attorney-in-Fact
