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KUNMING, Sept. 14 (Xinhua) -- Nine workers were trapped when a railway tunnel under construction collapsed on Thursday morning, local authorities said.
The tunnel entrance in the Xishuangbanna Dai Autonomous Prefecture collapsed at about 10:20 a.m., the information office of the prefecture government said in a statement.
A rescue operation is under way.
The tunnel is part of a railway that connects Yuxi and Mohan in Yunnan.
