Manufacturing, Manufacturing Plant Rochester, NY – Spontaneous combustion fire at textile plant contained by sprinkler system July 24, 2017 viking210 No one was hurt after a fire on St. Paul Street Wednesday night. An automatic fire alarm went off at the Alsco plant on St. Paul around 7 p.m. A third alarm was declared because of the heat, manpower and the size of the building – approximately 65,000 square feet. Firefighters said the fire was put out without anyone being injured. They said the fire started in the back of the building, and that a sprinkler system helped keep the fire from spreading. The extent of damage to the building is not yet clear. The cause was due to a spontaneous combustion of textiles, according to Rochester firefighters. There was no one inside and no one injured.