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