(EnergyAsia, July 1 2011, Friday) — Chinese state-owned Guangdong Rising Assets Management (GRAM) has offered to acquire Australian coking coal mine operator Caledon Resources for £313 million in a friendly deal. (US$1=£0.622).The ASX and UK-listed Caledon company has recommended that shareholders accept the all-cash bid from GRAM’s subsidiary, Guangdong Rising (Australia) Pty Ltd, or Bidco,…