Authorities uncover massive stockpile of mystery material at factory site — here's what they found

Authorities uncover massive stockpile of mystery material at factory site — here's what they found

Mexican authorities ordered a cleanup of a Monterrey-area factory following the discovery of 30,000 tons of improperly stored material with "hazardous characteristics." What's happening? The findings at the Zinc Nacional plant were the result of an investigation by The Guardian and Quinto Elemento Lab, a Mexican investigative journalism group. The Guardian broke the story, explaining that Zinc imports hazardous waste from the U.S. steel industry…