More than 40tons ofmethylisocyanatespilled from a Union Carbide-owned pesticide factory in Bhopal, India, in 1984, killing more than 20, 000 people in theworld’s worstchemicaldisaster.
At its current flow, the spill would take more than 260 days to rival the 1989 Exxon Valdez disaster, when about 11 million gallons spilled into Alaska's Prince William Sound.