Member Companies
ANSAC operates as the international sales, marketing and distribution arm for the three leading producers of natural soda ash in the United States. Together, these companies export approximately 4 million metric tons of natural soda ash annually, making ANSAC the largest exporter of natural soda ash in the world.
Trona mining and processing is an economic mainstay of the communities of southwest Wyoming. Collectively, ANSAC's member companies operate four plants along the Green River Basin. The mines and processing plants operate 24 hours per day, year-round, and employ a significant number of the people working the area, contributing over $300 million annually to the local economy.
A brief overview of each member company is provided below. Additional information can be obtained by visiting the company's corporate website.
FMC Wyoming, Inc. | ![]() |
FMC Industrial Chemicals (FMC) is a low-cost producer of inorganic chemicals with number one market positions in North American soda ash, hydrogen peroxide and persulfates. It also produces a range of other alkali products including various grades of sodium bicarbonate, sodium sesquicarbonate and caustic soda.
For more than 50 years, FMC has invested in new technology and innovative mining processes to provide the world with a reliable source of natural soda ash from its mining and processing facilities in Green River, Wyoming.
FMC Industrial Chemicals is a division of FMC Corporation. Headquartered in Philadelphia, Pennsylvania, FMC Corporation is one of the world's foremost diversified chemical companies. The company holds leading positions in agricultural, industrial and consumer markets. Since 1883, FMC has been providing solutions to the world's best companies and their customers. Today, FMC uses an array of advanced technologies in research and development to improve the delivery of medications; enhance foods and beverages; power batteries; protect crop yields, structures and lawns, and advance the manufacture of glass, ceramics, plastics, pulp and paper, textiles and other products.
For additional information, please visit www.fmcchemicals.com.
Tata Chemicals (Soda Ash) Partners | ![]() |
Tata Chemical’s Green River operation is one of the largest soda ash facilities in North America. The Partnership is 75% owned by Tata Chemicals North America Inc, based in East Hanover, NJ and 25% owned by the world’s largest glass container producer, Owens-Illinois Inc, headquartered in Perrysburg, OH.
The company has over 100 years experience of producing soda ash in North America. Since its start-up in 1967, the company’s Green River, WY operation has been producing high quality soda ash which is used worldwide by the leading manufacturing companies in glass containers, flat glass, sodium chemicals (including baking soda and sodium silicates), and detergents.
The managing partner for Tata Chemicals (Soda Ash) Partners is Tata Chemicals North America Inc., which is a wholly owned subsidiary of Tata Chemicals Limited, headquartered in Mumbai, India.
For additional information, please visit http://www.tatachemicals.com/north-america/.
OCI Chemical Corporation | ![]() |
Since 1962, OCI Chemical Corporation's Wyoming operation has been among the world's leading producers of high quality soda ash. While the name has changed over the years, the quality of the soda ash, people and services continues to set the pace in the industry, as it has since the facility was initially established by Stauffer Chemical.
OCI is currently the world's third largest producer of natural soda ash, with more than 400 employees. An 800,000 ton plant expansion increased production capacity at its manufacturing facility by approximately 30%.
Headquartered in Marietta, Georgia (USA), OCI Chemical Corporation is a wholly owned North American subsidiary of DC Chemicals Ltd. of South Korea.
For additional information, please visit www.ocichemical.com.



