Employees take part in a fire prevention drill at a PetroChina oil gas mine in Suining November 19, 2013. Picture taken November 19, 2013. REUTERS/Stringer (CHINA - Tags: BUSINESS ENERGY) CHINA OUT. ... more 
Employees take part in a fire prevention drill at a PetroChina oil gas mine in Suining November 19, 2013. Picture taken November 19, 2013. REUTERS/Stringer (CHINA - Tags: BUSINESS ENERGY) CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA less 
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Reuters | Photo By STRINGER/CHINA / REUTERS
Tue, Nov 19, 2013 11:58 PM EST