Sinopec safety officers inspect the site of the oil leak in Qingdao three hours before Friday's blast in a residential area. Photo: Xinhua

Human error blamed for Qingdao oil pipeline explosion

Poor planning of oil and sewer pipes, and negligence after leak was discovered, led to explosion, work safety investigators say

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Sinopec safety officers inspect the site of the oil leak in Qingdao three hours before Friday's blast in a residential area. Photo: Xinhua
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