Maintainers prepare for an inspection at Laojinchang gold mine where an accident involving carbon monoxide poisoning happened, in Huadian, northeast China's Jilin Province, Jan. 15, 2013. Ten people were killed and 28 others injured when a fire broke out on early Tuesday morning inside the gold mine, resulting in a high density of carbon monoxide. An investigation into the cause of the accident is under way. [Xinhua]