Caixin
May 23, 2012 11:45 AM

Foggy Business on China's Fast-Train Tracks

 
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(Beijing)– Workers building a high-speed railway that will eventually link Shanghai and Kunming are familiar with a powdery substance often found clinging to steel construction materials called cast-in channels.

What they've observed is worrisome because cast-in channels give critical support to all sorts of railroad structures, from power line to tunnel ceilings.

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