An iron ore tailings dam collapsed in southeastern Brazil on Friday, inundating a nearby community in mining waste and leaving an estimated 200 missing, according to Minas Gerais state firefighters.
Brazilian mining company Vale SA said in a statement that tailings reached the community of Vila Ferteco and an administrative office, where employees were present, which "indicated the possibility of victims." They said they didn't have further information on deaths or injuries at the dam, located in the town of Brumadinho. Parts of the city were evacuated and local firefighters were rescuing people by helicopter and ground vehicles.
There were no official reports of deaths, but the state fire department press department told The Associated Press that about 200 people were estimated to be missing.
Local television channel TV Record showed a firefighter's helicopter hovering inches off the ground as it hoisted a woman covered in mud out of the sludge.
Another local TV channel showed a video shot by firefighters arriving on the scene showing an extensive area covered in mud. A video posted to social media showed a rushing river of mud cutting through a road.
President Jair Bolsonaro sent a tweet saying he lamented the incident and was sending the three cabinet ministers to the area.
Another dam administered by Vale and Australian mining company BHP Billiton collapsed in Mariana, Minas Gerais, in 2015, resulting in 19 deaths and dislocating hundreds from their homes. It's considered the worst environmental disaster in Brazilian history, with 60 million cubic meters of waste flooding rivers and eventually reaching the Atlantic Ocean.
The rivers of mining waste are raising fears of widespread contamination. According to Vale's website, tailings are mostly made up of sand and are non-toxic. However, a UN report found that the waste from the 2015 disaster "contained high levels of toxic heavy metals." The 2015 collapse left 250,000 people without drinking water and killed thousands of fish.
Vale is Brazil's largest mining company. Two hours after the accident, Vale stocks fell 10 percent on the New York Stock Exchange.