• Alaska Gold
• Anglo Gold Ashanti
• Castle Valley Mining
• Center Crown Mining
• Chevron Mining, Inc.
• Cliffs Natural Resources
• CONSOL Energy, Inc.
• Crescent Technology Inc.
• Crowell Moring
• Detroit Edison Coal Services
• Endeavor Silver
• Environ
• Freeport-McMoRan Copper and Gold
• Gold Resource Corporation
• Grupo Mexico
• Horizon Mining
• Kinross
• Mechel Bluestone
• Mercer Lime
• National King Coal
• New Gold
• Newmont Gold
• Norwest Corporation
• Nyrstar, NTM
• P & H Mine Pro
• PinnOak Resources
• Patton Boggs, LLP
• Rhino Energy
• Rio Tinto
• Savage Services Corporation
• Ternium Mexico
• Thompson Creek Minerals
• U.S. Silver
• 18 Karat