No one reported any injuries after an explosion at an Ohio oil refinery Saturday, but it blew out windows in homes in Lima, Ohio.
Police said all workers at the Husky Lima Refinery were accounted for after the blast, according to the Miami Herald.
The blast, which could be felt 10 miles away, triggered a fire that burned into the afternoon and sent black smoke into the air above the building.
Crews tested and monitored the air to ensure that the smoke posed no threat to residents nearby. Heidi Griesmer, a spokeswoman for the Environmental Protection Agency, said the tests had not detected anything toxic in the air within the first few hours following the explosion.
Lima Police Sgt. Andy Green said no one was evacuated, but the police closed nearby streets for about seven hours, CBS News reported.
However, approximately 20 homeowners said the explosion broke their windows.
The explosion occurred at 6 a.m. Saturday, and the fire was not contained until 12 hours after the blast, according to The Miami Herald.
Green said they expected the refinery's in-house firefighting crew to work through the night to completely distinguish the fire.
Husky Energy spokesman, Mel Duvall, said it was too early to tell how the fire will affect the production of the plant and to what extent it was damaged.
The explosion occurred in a processing unit where crude oil is heated to begin breaking down the oil into other products, CBS News reported.
The refinery produces oil-based products such as gasoline, diesel and jet fuel. It is located about 80 miles northwest of Columbus.
