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Exhibit 21

SUBSIDIARY COMPANIES




 
Name of Subsidiary
State or Country
of Incorporation
Percent
Owned
Javelina Holdings Corporation
Delaware
100%
Kerr-McGee China Petroleum, Ltd.
Bahama Islands
100%
Kerr-McGee Corporation
Delaware 
100%
Kerr-McGee Energy Services Corporation
Delaware
100%
Kerr-McGee L.P. Corporation
Delaware
100%
Kerr-McGee (Nevada) LLC
Nevada
100%
Kerr-McGee Oil & Gas Corporation
Delaware
100%
Kerr-McGee Oil & Gas Onshore LP
Delaware
100%
Kerr-McGee Rocky Mountain Corporation
Delaware
100%
Kerr-McGee Shared Services Company LLC
Delaware
100%
Kerr-McGee U.K. Energy Corporation
Delaware
100%
Kerr-McGee Worldwide Corporation
Delaware
100%
KM Denmark Overseas ApS
Denmark
100%
KM Global Ltd.
Delaware
100%
KM Investment Corporation
Nevada
100%
Tronox Holdings, Inc.
Delaware
56.7%
Tronox Incorporated
Delaware
56.7%
Tronox LLC
Delaware 
56.7%
Tronox Luxembourg S.a.r.l.
Luxembourg
56.7%
Tronox Pigments (Savannah), Inc.
Georgia
56.7%
Tronox Pigments GmbH
Germany
56.7%
Tronox Pigments International GmbH
Switzerland
56.7%
Tronox (Switzerland) Holding GmbH
Switzerland
56.7%
Tronox Western Australia Pty. Ltd
Western Australia
56.7%
Tronox Worldwide LLC
Delaware 
56.7%
Westport Oil and Gas Company, L.P.
Delaware
100%


A number of additional subsidiaries are omitted since, considered in the aggregate as a single subsidiary, they would not constitute a significant subsidiary as of December 31, 2005.