UNCHECKED building on Lamma Island is destroying historical sites and artefacts, according to archaeologists. They say the Government should bring in controls so the items can be removed for preservation. The warning comes as Hong Kong Archaeological Society is set to complete a month-long $100,000 survey during which four Bronze Age (1000 BC) sites in Yung Shue Wan were excavated. Two of the sites, Sha Po Village and Wang Long, have been seriously damaged by construction, said chairman William Meacham. Two other sites, Yung Shue Long and Pak Kok San Tsuen, are in significantly better condition. 'Two sites are already ruined and the Government is not doing anything,' said Mr Meacham, who has accused the Antiquities and Monuments Office of spreading itself too thinly to accomplish anything. 'Male indigenous residents have the right to build homes but they seem to be springing up everywhere,' he added. 'The Yung Shue Long site is very impressive because you don't see that many areas in Hong Kong with that much pottery. But the richest part of the site may be under houses already since new construction is not being monitored.' Last December, a society dig at Sha Po Village yielded a 3,000-year-old clay pot. The current excavation has recovered numerous pot shards not only from the Bronze Age period but also later Han and Tang dynasty pottery pieces at an adjacent site, said Mr Meacham. Besides the pottery, rock fragments probably used as tools were also found. Mr Meacham will take the restored clay pot to a presentation at the Legco recreation and culture panel on Friday where he will ask the Government to raise the group's annual funding of $130,000. 'We would like to see the Government increase our subvention so we can have two full-time staff. Without that, other sites and sites in Cheung Chau and Tuen Mun will simply be destroyed.'