![Coal ash swirls on the surface of the Dan River in Danville, Virginia](/sites/default/files/multimedia_images_2019/201907us_environment_business_coalash.jpg)
Coal ash swirls on the surface of the Dan River following one of the worst coal-ash spills in US history into the river in Danville, Virginia, February 5, 2014.
© 2014 AP Photo/Gerry Broome, File
Coal ash swirls on the surface of the Dan River following one of the worst coal-ash spills in US history into the river in Danville, Virginia, February 5, 2014.