Multiple people killed and others missing after chemical explosion at US paper mill

Multiple people have been killed and injured and some are still missing after a major chemical explosion at a paper mill in Washington, authorities said.The explosion occurred at 07:15 PDT (15:15 GMT) at the Nippon Dynawave Packaging facility in Longview, 130 miles (210km) south of Seattle.Investigators said in a news conference on Tuesday that 10 people have been injured and transported to hospital. Officials have not yet said how many people have died or are unaccounted for.The explosion occurred due a "rupture of a tank containing white liquor", the company said in a statement. white liquor is a highly corrosive chemical used in the paper-making process.Cowlitz Fire and Rescue Chief Scott Goldstein said there are an "unknown number of fatalities at this moment," adding that officials have "confirmed that there are fatalities, but the exact number is undetermined".Nine of the people injured are employees at the factory, and one is a firefighter, Goldstein said. Their injuries range from "critical severe to minor", and include burn and inhalation injuries. The company statement said there were "multiple critical injuries".The tank that ruptured holds about 80,000 gallons (300,000 litres), he said, and it was roughly 60% full when the explosion occurred.The scene is stable, the chief said, but the public should stay away from the area as firefighting efforts continue. He said the fire does not pose any threat to the larger community.