• Air Products and Chemicals Inc.
• Valhi Inc.
• LSB Industries Inc.
• NL Industries Inc.
• American Plastics & Chemicals Inc
• Toth Aluminum Corp
• Cbi Industries Inc
• Polydex Pharmaceuticals Ltd/Bahamas
• American Pacific Corp
• Engelhard Corp
• Boc Group PLC
• Hydrogen Power Inc
• Safe Waste Systems Inc
• Amfil Technologies, Inc.
• Trans Resources Inc
• CALGON CARBON Corp
• Melamine Chemicals Inc
• Alcoa International Holdings Co
• Tor Minerals International Inc
• Delta Omega Technologies Inc
• Marsulex Inc
• General Chemical Corp
• Linde Inc
• Calcitech Ltd
• Reheis Inc
• Minerals Technologies Inc.
• Beard Co
• General Chemical Group Inc
• Millennium America Inc
• Millennium Chemicals Inc
• Ciba Specialty Chemicals Holding Inc
• Atmi Inc
• Dch Technology Inc
• Brunner Mond Group PLC
• Geo Specialty Chemicals Inc
• Hydro Environmental Resources Inc
• Luna Technologies International Inc
• Fibr Plast Corp
• Luxfer Holdings PLC
• Lumonall Inc.
• Avecia Group PLC
• United Helium, Inc.
• Hydrogenics Corp
• GeNOsys, Inc.
• Messer Griesheim Holding Gmbh
• Ineos Group Holdings PLC
• Ineos Holdings Ltd
• Esp Enterprises, Inc.
• Kronos International Inc
• Ineos Group Ltd

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