. . "Grinnell Mutual Reinsurance Company is a mutual reinsurance company based in Grinnell, Iowa, United States. The company operates in 12 midwestern states reinsuring 250 mutual insurance companies."@en . . . . "Grinnell Mutual"@en . . . . "1909-04-17Z"^^ . "680"^^ . "1909Z"^^ .