US cocoa at 9-1/2 month top, but rest mutedguardian.co.uk, UKBy Rene Pastor and Sharon Lindores NEW YORK/LONDON, June 11 (Reuters) - Cocoa prices in New York powered to a 9-1/2 month peak on Thursday due to fund buying inspired by a firm sterling, but the rest of the complex dawdled in consolidation business, ...