The Associated Press reports Imperial Sugar has agreed to pay more than $6 million in fines for safety violations at two of its U.S. plants, including the Georgia refinery where a deadly dust explosion killed 14 workers in 2008. Federal regulators announced the settlement after nearly two years of wrangling with the Texas-based company as it contested penalties first proposed by the Occupational Safety and Health Administration. OSHA had sought to fine Imperial Sugar $8.7 million. The settlement includes more than $4 million in fines for 124 safety violations at Imperial Sugar''s plant near Savannah, where the explosion was caused by sugar dust igniting like gunpowder. The company agreed to another $2 million for 97 violations OSHA later found at its plant in Gramercy, La.