The Harlan Fire Department was called to Essentia, east of Harlan, at around 5:24-p.m., Friday. According to our sister station KNOD in Harlan, the original call was for an explosion in the east part of the building. Harlan Fire Chief Roger Bissen said upon arrival, the fire department did not find any fire, but there was a lot of smoke in that area of the building. The cause of the smoke was powder inside of one of the hammer mills had ignited, causing the explosion. The blast was contained within the stainless steel tank. The Harlan Fire Department disassembled the machine and ventilated the building. There was no damage to the building.