TWO men were killed on a Wong Chuk Hang construction site yesterday, prompting new fears about inadequate safety measures in the Hong Kong building industry. Chan Tak-sum, 48, and Chow Sun-cheung, 39, were certified dead on arrival at Queen Mary Hospital after a platform on which they were working collapsed and threw them down a 15-metre lift shaft. They were cleaning debris off the platform at about 3 pm when the accident occurred. Fire Services Department sources suspect they were not wearing safety harnesses. A Labour Department spokesman said if this was confirmed the contractor responsible for work on the 26-storey Yan's Tower, at 25-27 Wong Chuk Hang Road, could be prosecuted. Firemen found the workers at the bottom of the shaft, which was flooded with water, buried under platform debris. They were unconscious when they were pulled free. The deaths are the latest in a catalogue of disasters. In June last year, 12 workers died at a North Point office block when the service lift they were using failed and plunged 17 floors to the ground. Another accident in October involved a worker who fell 10 metres to his death from a platform at a construction site in Shau Kei Wan. At the same time, deaths and injuries at the 10 airport core project sites are running at record levels. Yesterday, legislators were divided on who was responsible for safety. Ronald Arculli said while contractors had to provide safety equipment, workers often chose not to use it. 'I think that the objective and aim of the construction industry as a whole is to increase safety, but employees need to contribute to their own safety and that of their fellow employees.' But unionist legislator Lau Chin-shek disagreed, saying the construction industry was responsible for safety and should improve employees' knowledge.