Pauline MacMillan Keinath net worth: Pauline MacMillan Keinath is a member of the very wealthy Cargill family who a net worth of $5.2 billion dollars. She currently lives in St. Louis, Missouri, and is one of the seven remaining billionaires associated with Cargill, Inc. The company was founded in 1865 by William Cargill in Iowa, and has since grown to become the largest privately held company in the United States. After William Cargill passed away, the company began to struggle, and John MacMillan, Mr. Cargill's son-in-law, spearheaded the company's recovery. The Cargill/MacMillan clan is now one of the richest families in the world, and still owns 90% of the company. Cargill, Inc. began as a grain storage company, but has since grown to include anything and everything related to food production. The exact wealth of the family members is unknown, since the owners of privately owned companies are not required to report the amount they are personally worth.
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