Chevron Corporation

ConocoPhillips Company

Dean Foods Company

E.I. du Pont de Nemours and Company

EOG Resources, Inc.

General Electric Company

Guaranty Bank

INVISTA

Metropolitan Transportation Commission

Osram Sylvania

RELLC

San Francisco Bay Area Rapid Transit District (BART)

Sandia National Laboratories

Sears, Roebuck & Co.

Temple-Inland, Inc.

United States Steel

Valero Energy Corporation

Verizon Wireless