• W. L. Gore, Inc.
• E.I. DuPont de Nemours & Co., Inc.
• Ciba Specialty Chemicals
• Noramco
• Hercules, Inc.
• Southco, Inc.
• Sun Oil Company
• Conectiv
• Arco
• Lukens Steel
• Kraft Foods
• Avon Corporation
• FMC Corporation
• National Chlorine
• Rodel, Inc.
• Standard Chlorine
• W. R. Grace Company
• Allied Chemical
• Lanxide Corporation
• Arlon Corporation
• Fischer Scientific
• General Motors Corporation

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