A worker operates a machine to lay tracks at the construction site for 
 the Olympic extension of the Beijing underground system May 13, 2007. More 
 than 10,000 labourers are working to finish 52 new stations and 87 km (54 
 miles) of tracks that will bring the total length of the subway in Beijing 
 to 300 km (186 miles) and is expected to be finished several months before 
 the start of the 2008 Olympic Games. [Reuters]  |