Associated Cement Companies has improved cement despatches by 8.3 per cent to 1.524Mt in May 2005 as against 1.407Mt in May 2004. Production improved by 12 per cent to 1.565Mt for the month under review. The Aditya Birla group has reported an increase of 14.2 percent at 2.478Mt in despatches from its cement companies in May 2005. Cement production of the group as a whole rose by 14 per cent to 2.517Mt. Gujarat Ambuja Cements has improved cement despatches by five per cent to 1.097Mt and production by six per cent to 1.104Mt in May 2005.