Almatis Burnside, Inc.

Axiall Corporation

Barber Brothers Contracting Co.

Certainteed Corporation

CF Industries Donaldsonville Nitrogen Complex

CF Industries Port Neal Nitrogen Complex

ConocoPhillips

Dorf Ketal Chemicals LLC

ExxonMobil 

Marathon Petroleum Corporation

Methanex USA, LLC

Mitsubishi Heavy Industries America, Inc.

Momentive Specialty Chemicals Inc.

Nalco/ Ecolab/ Champion

Olin Chlor Alkali Products

PCS Nitrogen

Pin Oak Terminals

REG Geismar, LLC

Shell Chemical LP

Shell/ MotivaNorco

SNF Flopam

Thoma-Sea Marine Constructors

Valero Refining

Westlake Chemical

WJ Barnes Electrical