Explosions at a pipeline that left dozens dead and upended cars and sidewalks in a busy Chinese port city have renewed focus on industrial facilities in densely populated areas—an issue of rising importance as Beijing pushes an ambitious urbanization plan. Regulators and the pipeline’s operator, China’s largest refining company, began exchanging blame on Monday over the Friday incident in the eastern city of Qingdao, which drew widespread attention across the country and prompted a visit by President Xi Jinping to a local hospital to meet with victims. Authorities on Monday raised the death toll to 55, with 136 injured and nine still missing. Chinese authorities said Monday that the blasts exposed problems caused by human error and that the accident was a “very serious dereliction of duty,” China’s official Xinhua news agency said, citing Yang Dongliang, director of the State Administration of Work Safety. Mr. Yang said the problems […]