 Rescuers in Vietnam have pulled the body of a 10-year-old boy from a hollow concrete pillar at a construction site, weeks after he became trapped, state media said Friday.Thai Ly Hao Nam fell into the 25-centimetre-wide 12-inch shaft of the pillar -- sunk 35 metres 115 feet as part of a new bridge -- apparently while looking for scrap metal on December 31.Hundreds of rescuers, including soldiers and engineering experts, were deployed to the site in Dong Thap province in the Mekong Delta.Four... 