One of Bordeaux's largest AOC wine cooperatives, La Cave des Hauts de Gironde (CHG), is investing EUR13m (US$16.7m) in a restructuring and expansion programme. Work will start next month on a 6,500sqm extension to facilities at the co-op's HQ in Marcillac, comprising a bottling line and storage area for finshed products. Both should be ready by spring 2011, said CHG this week.