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United Steelworkers Local 13555 Unions Making a Difference Awesome Links Officer Info Welcome to USW Local 13555. Posted on January 2 2025 by Administrator USW Local 13555 is located in Sulphur Louisiana and we are organized with Phillips 66 Sasol Louisiana Pigment and Alcoa. It is our goal to be of service to our membership and to attend to the needs of the Local with professionalism and integrity. For more information on who we are please see the International Steelworkers Union website.