Christopher G. Whitfield ’09, Class of 2009 Ring Committee chair, and Vice Chair Colleen P. Mosley ’09, explain the tradition of MIT’s class ring, dubbed the “Brass Rat.” Ricardo Ramirez—The Tech May. 9, 2016 Facebook Twitter Reddit Print Christopher G. Whitfield ’09, Class of 2009 Ring Committee chair, and Vice Chair Colleen P. Mosley ’09, explain the tradition of MIT’s class ring, dubbed the “Brass Rat.” Ricardo Ramirez—The Tech