The men are trapped in an area of about 50 metres and are safe, officials said, with food, water and oxygen being supplied through a pipe since the collapse early on Sunday, and frequent contact is being made with them through walkie-talkies. "The plan is to drill through the debris, put mild steel pipes in it and make a path for the labourers to move," Ranjit Sinha, the top disaster management officer in Uttarakhand, told Reuters by phone.