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Premier Magnesia, LLC is a global market leader in magnesia-based products and solutions for dozens of applications ranging from agricultural to industrial and environmental markets.

Our Giles Chemical Division is the largest North American producer of magnesium sulfate, commonly known as Epsom Salt, with manufacturing facilities in Greendale, IN and Waynesville, NC. Premier Magnesia and Giles Chemical are your essential magnesia mineral source, assuring consistent quality, technical expertise, and long term reliable supply.