A SECOND medical centre will be set up for workers constructing the new airport at Chek Lap Kok. The Provisional Airport Authority plans a four-ward centre for the south side of the airport, with a full-range of medical equipment including X-ray machines. It is considering buying stock from the former British Military Hospital through an auction being held by the Government and the Garrison. Items - ranging from X-ray machines to hundreds of pairs of small theatre scissors - are on display in the now empty hospital building in King's Park, Kowloon. It ceased operation in June and will be handed over to the Government, which owns 65 per cent of the assets, next month. But unlike the past auctions held by the force, small dealers will be low priority. Big organisations aiming to stock up for another hospital or a medical centre would be targeted, said George Walsh of JCM Disposals, a private agent contracted for four months to organise the auction. This is to avoid local dealers agreeing among themselves on the stock they will go for. Mr Walsh said governments and medical sectors in developing countries had expressed interest, apart from local hospitals and the airport authority. The closure of the hospital comes as the British Garrison is scaled down from more than 10,000 personnel to about 3,000, as 1997 approaches. The 15-storey hospital, founded in 1967, used to provide medical treatment for servicemen and dependents, civilians and returning soldiers from Vietnam.