What happened

A fire broke out in the compressor shed of a hydrocracker plant at Bharat Petroleum's Mumbai refinery in Mahul, Chembur, after a leak of an oil-water mixture in an adjoining plant. Heat buildup caused an explosion heard several kilometers away. 43 workers were injured, several seriously; the hydrocracker unit was shut for around two months while BPCL adjusted its crude mix. This was an accidental industrial incident, not an attack.

When cited sources give different casualty, damage or spill figures for this event, they’re reported side by side above rather than merged into one number. See how confidence levels work.