Part I DESIGNATED OWNERS OF THE THISTLE TO DUNLIN PIPE-LINE AND THE THISTLE TO THISTLE SALM PIPE-LINE

ARCO British Ltd., whose principal place of business in the United Kingdom is at ARCO House, 48 Grosvenor Street, London, W1X 0AN.

Britoil plc., whose registered office is at 301 St. Vincent Street, Glasgow, G2 5DD.

Britoil (Alpha) Ltd., whose registered office is at Britannic House, Moor Lane, London, EC2Y 9BU.

Deminex U. K. Oil and Gas Ltd., whose registered office is at Bowater House, 68 Knightsbridge, London, SW1X 7LD.

Monument Exploration and Production Limited whose registered office is at 17 Bedford Square, London WC1B 3JA.

Premier Consolidated Oilfields p.l.c., whose registered office is at 25 Charlotte Square, Edinburgh, EH2 4EZ.

Santa Fe Minerals (U.K.) Inc., whose principal place of business in the United Kingdom is at Parnell House, 19/28 Wilton Road, London, SW1V 1LZ.

Ultramar Exploration Ltd., whose registered office is at 141 Moorgate, London, EC2M 6TX.