SIGNIFICANT SUBSIDIARIES
JURISDICTION IN
NAME WHICH ORGANIZED PARENT OR INVESTOR LINE OF BUSINESS
- -------------------------------- --------------- --------------------------------- ------------------------
Millennium Overseas Holdings United Kingdom Millennium Chemicals Inc. Chemical company
Limited
Delaware Millennium Overseas Holdings Chemical company
Millennium America Holdings Inc. Limited
Millennium America Inc. Delaware Millennium America Holdings Inc. Chemical company
Millennium Holdings Inc. Delaware Millennium America Inc. Chemical company
Quantum Chemical Corporation Virginia Millennium Holdings Inc. Chemical company
SCM Chemicals Inc. Delaware Millennium Holdings Inc. Chemical company
HMB Holdings Inc. Delaware SCM Chemicals Inc. Holding company
MHC Inc.(1) Delaware HMB Holdings Inc. Discontinued operations
UNNAMED WHOLLY-OWNED
SUBSIDIARIES OF NAMED
SUBSIDIARIES CARRYING ON
THE SAME LINE OF
BUSINESS
--------------------------------------------
NAME DOMESTIC FOREIGN
- -------------------------------- -------------------- --------------------
Millennium Overseas Holdings 8
Limited
Millennium America Holdings Inc.
Millennium America Inc.
Millennium Holdings Inc. 3
Quantum Chemical Corporation 11 6
SCM Chemicals Inc. 2
HMB Holdings Inc.
MHC Inc.(1) 46 27
- ------------
(1) The discontinued operations held by MHC Inc. include subsidiaries which, if
considered in the aggregate as a single subsidiary, would not constitute a
significant subsidiary as of the end of the year covered by this report.