Relationships	Role	Relationship Start	Relationship End
Preussag Aktiengesellschaft	Parent	12/31/1991	9/30/1994
Salzgitter Grundstuecks- Und Beteiligungsgesellschaft Mbh	Parent	12/31/1991	9/30/1994
Preussag Aktiengesellschaft	Parent	12/31/1985	12/30/1991
Deilmann Haniel Gmbh	Subsidary	12/31/1985	9/30/1994
Deutsche Tiefbohr Ag	Subsidary	12/31/1987	9/30/1994
Pecos Energy Corporation	Subsidary	12/31/1985	7/1/1991
International Oil And Gas Corp.	Subsidary	12/31/1986	11/30/1988
Deutag Friesland Drilling B.V.	Subsidary	12/31/1985	12/30/1987
International Oil And Gas Corp.	Subsidary	12/31/1985	12/30/1986

Acquisitions & Mergers	Role	Assets	Acct Method	Type	Transaction Date
Preussag Energie Gmbh	Buyer			Discontinued	10/1/1994