NASHVILLE, Tenn. (AP) — Officials say firefighters are making progress against a large industrial fire at a federal Superfund site in central Tennessee.

Hickman County Mayor Steve Gregory said Thursday morning that firefighters are trying to smother the blaze by covering it with dirt. He says the blaze is 65 percent contained.

Gregory said firefighters restarted efforts to fight the blaze around midnight after backing off earlier due to concerns that two propane tanks could explode. He said officials later determined that the tanks weren't a danger.

Evacuation orders for the area remain in effect and schools remained closed.

The fire at Industrial Plastics Recycle, about 45 miles southwest of Nashville, has been burning since Wednesday morning.

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