Flames spread through an industrial estate building used for storing recycled insulation and refrigeration material Sunday morning in Melton, England.
The building also contains an unknown quantity of gas cylinders, the Leicestershire Fire and Rescue Service website reports.
At 1 a.m., the initial emergency call was received. Firefighters arrived to find a building measuring 70 meters by 30 meters ablaze.
LF&RS assigned three fire teams using water jets to make an exterior attack and protect a bullet tank containing nitrogen. As of 9 a.m., seven fire engines, an aerial ladder and a rescue truck were on the scene.
Firefighters from Melton Mowbray, Oakham, East Leake, West Bridgeford, Loughborough, Birstall, Loughborough, Kettering, Shepshed, Kibwo4th, Market Harborough and Nottinghamshire responded to the fire.