Kentucky Finance Secretary Jonathan Miller will leave Governor Steve Beshear's administration at the end of this month.Miller announced Thursday that he's joining the Lexington law offices of Frost Brown Todd. He will also be senior adviser to Washington-based Wellford Energy.Beshear has appointed Lori Hudson Flannery to fill Miller's spot. She's been a deputy finance secretary for the last three years.Miller previously served two terms as State Treasurer.Additional information from the Associated Press