LittleSis: Greg L Armstrong

Mr. Armstrong has been a Director of the Company since March 2005. Mr. Armstrong served as a Director of Varco from May 20, 2004 until its merger with the Company on March 11, 2005. Since 1998, he has been the Chairman of the Board and Chief Executive Officer of Plains All American GP LLC, the general partner and controlling entity of Plains All American Pipeline, L.P., a publicly traded master limited partnership engaged in the business of marketing, gathering, transporting, terminalling and storing crude oil. Mr. Armstrong is a member of the National Petroleum Council and a member of the Board of BreitBurn Energy Partners.

Person	Common Orgs
Gary R Petersen	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
Robert M Sanford	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
James B Fryfogle	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
John vonBerg	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
Jonathon Taft Symonds	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
Christopher M Temple	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
Mark J Gorman	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
Harry N Pefanis	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
Al Swanson	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
Walter Van Zanten	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
Samuel N Brown	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
Charles Kingswell-Smith	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
Roger D Everett	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
Jim G Hester	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
John R Keffer	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
Chris Herbold	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
Troy E Valenzuela	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
Richard K McGee	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
Phillip D Kramer	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.
Vicky Sutil	Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.

Person

Common Orgs

Gary R Petersen

Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.

Robert M Sanford

Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.

James B Fryfogle

Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.

John vonBerg

Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.

Jonathon Taft Symonds

Plains All American Pipeline, L.P., Plains Gp Holdings, L.p.