Hillsborough County Fire Rescue firefighters are working to knock down a brush fire that reignited Tuesday afternoon near the Mosaic fertilizer plant following last night's massive blaze. Firefighters responded around 10:30 a.m. to the facility, located at 8813 U.S. Highway 41 in Riverview. Due to the extreme heat left from last night’s fire and gusty winds, officials said they are battling another brush fire. One of the polyethylene pipes that burned last night reignited in the most recent blaze, fire rescue said, and a second pipe is now involved. However, the fire doesn't appear to threaten any structures in the area. MORE: https://www.wtsp.com/article/news/local/hillsboroughcounty/brush-fire-mosaic-fertilizer-plant-reignites/67-fd749a5b-0b59-498c-9e2e-15054b9c3cb3