April 7 (UPI) -- A large fire in Paris sent thick, black smoke billowing over the French capital on Monday as hundreds of firefighters battled flames at one of the city's largest recycling plants. "A massive fire that broke out in the basement is underway at the Syctom Paris17 factory," Geoffroy Boulard, mayor for the 17th arrondissement, wrote Monday in a translated post on X. "All personnel have been evacuated, intervention is underway. Please avoid the area," the mayor warned. Un violent