LONDON & DENVER--(BUSINESS WIRE)--The Board of Directors of MillerCoors, the U.S. and Puerto Rican joint venture between SABMiller plc (LN:SAB; OTC:SABMRY) and Molson Coors Brewing Company (NYSE: TAP; TSX: TPX), today named Gavin Hattersley to the role of interim Chief Executive Officer to lead the business when current CEO Tom Long retires June 30, 2015. Hattersley, 52, currently Chief Financial Officer (CFO) of Molson Coors and former CFO of MillerCoors, will serve as interim CEO for up to si