<PAGE>
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Amendment No. 7 to
Schedule 13D
Under the Securities Exchange Act of 1934
TERRA NITROGEN COMPANY, L.P.
----------------------------
(Name of Issuer)
Common Units of Limited Partnership Interests
---------------------------------------------
(Title of Class of Securities)
881005 20 1
-------------------
(CUSIP Number)
George H. Valentine N. Jordan
Corporate Secretary Secretary
Terra Industries Inc. Anglo American plc
Terra Centre 20 Carlton House Terrace
600 Fourth Street London SW1Y 5AN
Sioux City, Iowa 51102-6000 United Kingdom
(712) 277-1340 (171) 698-8888
----------------------------------------------------------------
(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)
August 31, 1999
--------------------------------------------
(Date of Event which Requires Filing
of this Statement)
If person has previously filed a statement on Schedule 13G to report the
acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box[_].
Check the following box if a fee is being paid with the statement[_].
<PAGE>
SCHEDULE 13D
- ----------------------- ---------------------
CUSIP NO. 881005 20 1
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Terra Nitrogen Corporation
EIN: 72-1159610
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [X]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
SOURCE OF FUNDS*
4
00
- ------------------------------------------------------------------------------
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
TO ITEMS 2(d) or 2(e) [_]
5
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
6
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
7
NUMBER OF
-0-
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 8
OWNED BY 11,172,414 (See Item 5)
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
9
REPORTING
-0-
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 10
11,172,414 (See Item 5)
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
11,172,414 (See Item 5)
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
60.4% (See Item 5)
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
14
CO
- ------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
(INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.
<PAGE>
SCHEDULE 13D
- ----------------------- ---------------------
CUSIP NO. 881005 20 1
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Terra Capital, Inc. (Due to direct ownership of 2,216,600 Common Units and
solely due to indirect ownership of 11,172,414 Common Units through its
wholly owned subsidiary, Terra Nitrogen Corporation) EIN: 42-1431650
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [X]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
SOURCE OF FUNDS*
4
OO
- ------------------------------------------------------------------------------
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
TO ITEMS 2(d) or 2(e) [_]
5
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
6
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
7
NUMBER OF
-0-
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 8
OWNED BY 13,389,014 Common Units (See Item 5)
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
9
REPORTING
-0-
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 10
13,389,014 Common Units (See Item 5)
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
13,389,014 Common Units (See Item 5)
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
72.4% (See Item 5)
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
14
CO
- ------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
(INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.
<PAGE>
SCHEDULE 13D
- ----------------------- ---------------------
CUSIP NO. 881005 20 1
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Terra Capital Holdings, Inc. (Solely due to indirect ownership through
its wholly owned subsidiary, Terra Capital, Inc.) EIN: 42-1431905
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [X]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
SOURCE OF FUNDS*
4
OO
- ------------------------------------------------------------------------------
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
TO ITEMS 2(d) or 2(e) [_]
5
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
6
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
7
NUMBER OF
-0-
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 8
OWNED BY 13,389,014 Common Units (See Item 5)
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
9
REPORTING
-0-
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 10
13,389,014 Common Units (See Item 5)
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
13,389,014 Common Units (See Item 5)
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
72.4% (See Item 5)
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
14
CO
- ------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
(INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.
<PAGE>
SCHEDULE 13D
- ----------------------- ---------------------
CUSIP NO. 881005 20 1
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Terra Industries Inc. (Solely due to indirect ownership through its
wholly owned subsidiary, Terra Capital Holdings, Inc.) EIN: 52-1145429
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [X]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
SOURCE OF FUNDS*
4
OO
- ------------------------------------------------------------------------------
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
TO ITEMS 2(d) or 2(e) [_]
5
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
6
Maryland
- ------------------------------------------------------------------------------
SOLE VOTING POWER
7
NUMBER OF
-0-
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 8
OWNED BY 13,389,014 Common Units (See Item 5)
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
9
REPORTING
-0-
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 10
13,389,014 Common Units (See Item 5)
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
13,389,014 Common Units (See Item 5)
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
72.4% (See Item 5)
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
14
CO
- ------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
(INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.
<PAGE>
SCHEDULE 13D
- ----------------------- ---------------------
CUSIP NO. 881005 20 1
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Taurus Investments S.A. - Solely due to indirect ownership through its
ownership of over 5% of the common stock of Terra Industries Inc.
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [x]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
SOURCE OF FUNDS*
4
OO
- ------------------------------------------------------------------------------
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
TO ITEMS 2(d) or 2(e) [_]
5
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
6
Luxembourg
- ------------------------------------------------------------------------------
SOLE VOTING POWER
7
NUMBER OF
-0-
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 8
OWNED BY 13,389,014 Common Units (See Item 5)
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
9
REPORTING
-0-
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 10
13,389,014 Common Units (See Item 5)
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
13,389,014 Common Units (See Item 5)
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
72.4% (See Item 5)
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
14
CO
- ------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
(INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.
<PAGE>
SCHEDULE 13D
- ----------------------- ---------------------
CUSIP NO.
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Taurus International S.A. - Solely due to indirect ownership through its
ownership of over 50% of the common stock of Terra Industries Inc.
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [x]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
SOURCE OF FUNDS*
4
OO
- ------------------------------------------------------------------------------
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
TO ITEMS 2(d) or 2(e) [_]
5
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
6
Luxembourg
- ------------------------------------------------------------------------------
SOLE VOTING POWER
7
NUMBER OF
-0-
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 8
OWNED BY 13,389,014 Common units (See Item 5)
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
9
REPORTING
-0-
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 10
13,389,014 Common units (See Item 5)
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
13,389,014 Common units (See Item 5)
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
72.4% (See Item 5)
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
14
CO
- ------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
(INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.
<PAGE>
SCHEDULE 13D
- ----------------------- ---------------------
CUSIP NO.881005 20 1
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Anglo American plc - Solely due to indirect ownership through its wholly
owned subsidiary, Taurus International S.A. (and its wholly owned
subsidiary Taurus Investments S.A.)
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [x]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
SOURCE OF FUNDS*
4
OO
- ------------------------------------------------------------------------------
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
TO ITEMS 2(d) or 2(e) [_]
5
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
6
United Kingdom
- ------------------------------------------------------------------------------
SOLE VOTING POWER
7
NUMBER OF
-0-
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 8
OWNED BY 13,389,014 Common Units (See Item 5)
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
9
REPORTING
-0-
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 10
13,389,014 Common Units (See Item 5)
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
13,389,014 Common Units (See Item 5)
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
72.4% (See Item 5)
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
14
CO
- ------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
(INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.
<PAGE>
Item 1. Security and Issuer.
-------------------
This Amendment No. 7 amends the Schedule 13D dated March 31, 1997 (as
amended by Amendments Nos. 1 through 6, the "Schedule 13D") of the Reporting
Persons relating to Common Units of limited partnership interests (the "Common
Units") of Terra Nitrogen Company, L.P., a Delaware limited partnership
("TNCLP"). The principal executive offices of TNCLP are at 600 Fourth Street,
Sioux City, Iowa 51101.
Item 2. Identity and Background
-----------------------
Item 2 and Annex A are hereby amended (a) to delete the reference to
S. Wesley Haun as a Vice President of TNC in Section I of Annex A, (b) to delete
the references to Charles J. Pero as Vice President, Human Resources and Paula
C. Norton as Vice President, Corporate and Investor Relations of Terra
Industries Inc. in Sections I and IV of Annex A, and (c) to modify the title for
W. Mark Rosenbury to be Senior Vice President and Chief Administrative Officer
in Section IV of Annex A.
Item 3. Source and Amount of Funds or Other Consideration.
-------------------------------------------------
Item 3 is hereby amended by insertion of the following additional
sentence at the end of the second paragraph: "The amount of funds expended for
the purchases between August 1, 1999 and August 31, 1999 totaled $2.1 million."
Item 4. Purpose of Transaction.
----------------------
Item 4 is hereby amended by the insertion of the following additional
sentence after the sixth sentence of the second paragraph: "Terra Capital
further purchased 223,800 Common Units between August 1, 1999 and August 31,
1999 pursuant to the buyback authority."
Item 5. Interest in Securities of the Issuer.
------------------------------------
Item 5 is hereby amended by deleting the second and third sentences of
the first paragraph under section (a) and replacing them with the following
sentences: "Terra Capital is the direct beneficial owner of 2,216,000 Common
Units and, by virtue of its ownership of all the outstanding common stock of
TNC, may be deemed to possess indirect beneficial ownership of the Common Units
beneficially owned by TNC. Thus, Terra Capital's direct and indirect ownership
in the aggregate represents approximately 72.4% of the outstanding Common
Units."
Item 5 is hereby further amended by deleting the second sentence of
the first paragraph under section (b) and replacing it with the following
sentence: "Terra Capital has the power to vote or direct the vote and the power
to dispose of or direct the disposition of the 2,216,600 Common Units
beneficially owned by Terra Capital."
Item 5 is hereby further amended by adding the following table under
section (c)(i) to read as follows:
<TABLE>
<CAPTION>
Purchase Date Number of Units Price per Unit
------------- --------------- --------------
<S> <C> <C>
08/02/99 3,900 $9.8750
08/04/99 3,000 $9.5000
08/05/99 3,900 $9.3750
08/06/99 12,000 $9.6250
08/09/99 1,700 $9.3750
</TABLE>
<PAGE>
<TABLE>
<S> <C> <C>
08/10/99 4,100 $9.3430
08/11/99 13,000 $9.4375
08/12/99 94,000 $9.8723
08/17/99 3,000 $9.3750
08/18/99 3,000 $9.3750
08/19/99 3,600 $9.3542
08/23/99 2,000 $9.2500
08/25/99 66,000 $9.7053
08/26/99 5,300 $9.7488
08/27/99 5,300 $9.6875
-------
Total (between 8/1/99 and 8/31/99) 223,800
Total (in 1999, through August 31) 609,200
</TABLE>
Item 6. Contracts, Arrangements, Understandings or Relationships with Respect
---------------------------------------------------------------------
to Securities of the Issuer.
---------------------------
Not amended.
Item 7. Material to be Filed as Exhibits.
--------------------------------
Not amended.
<PAGE>
SIGNATURE
After reasonable inquiry and to the best of our knowledge and belief,
the undersigned certifies that the information set forth in this Statement is
true, complete and correct.
Date: September 1, 1999
TERRA NITROGEN CORPORATION
By /s/ George H. Valentine
-------------------------------------------------
George H. Valentine
Its: Vice President and General Counsel
TERRA CAPITAL, INC.
By /s/ George H. Valentine
-------------------------------------------------
George H. Valentine
Its: Vice President and Corporate Secretary
TERRA CAPITAL HOLDINGS, INC.
By /s/ George H. Valentine
-------------------------------------------------
George H. Valentine
Its: Vice President and Corporate Secretary
TERRA INDUSTRIES INC.
By /s/ George H. Valentine
-------------------------------------------------
George H. Valentine
Its: Senior Vice President, General Counsel and
Corporate Secretary
TAURUS INVESTMENTS S.A.
By /s/ David A.L. Bennett
-------------------------------------------------
David A.L. Bennett
Its: Secretary
TAURUS INTERNATIONAL S.A.
By /s/ David A.L. Bennett
-------------------------------------------------
David A.L. Bennett
Its: Secretary
ANGLO AMERICAN PLC
By /s/ Nick Jordan
-------------------------------------------------
Nick Jordan
Its: Secretary
