HA NOI - More than half a tonne of steel sheeting fell from a crane as it was being hoisted into the air during the construction of Station Four on the Nhon-Ha Noi urban train project on Sunday evening.
Le Huy Hoang, deputy director of the project's board of management, later called for all work to be stopped while an investigation into the incident was carried out.
Representatives of South Korea's Posco Corporation, the main contractor on Station Four, said no one was injured.
They said the workers were totally to blame for the incident because they had not checked the way the sheeting had been tied.
Hoang has told the company to make a full report on the incident and include all safety measures. He stopped all work until safety measures were completed.
The urban railway project is part of the Ha Noi urban sky train project, which will have a total length of 12.5km (8.5km overhead, 4km underground).
It Is planned to expand the line to 21 km by 2020, then 33 and 48 km by 2030. The project commenced in September 2010 and is scheduled for completion in 2018.
Last December,scaffolding collapsed at a construction site at the Ha Dong Terminal on Tran Phu Street, which is part of the Ha Dong - Cat Linh flyover project, another important part of the Ha Noi urban sky train project.
Earlier in November, a steel beam dropped from a crane at Thanh Xuan Station during work on the same project. The accident killed one person and seriously injured two others.