Pylesville, MD - At 1755hours WVFC and surrounding mutual-aid companies were dispatched for a building fire in the 4000blk. of Heaps School Rd. As units called responding, Dispatch advised was receiving multiple calls reporting a working building fire. Units also observed a heavy smoke column from the area. At 1804hrs. Chief 6 arrived and reported a 60'x60' building fully involved. E612 arrived and placed multiple hand lines into service and knocked the fire in about 15 mins. Crews then conducted overhaul operations and cleared the scene at 2038hrs. MD Fire Marshal office is investigation the cause. Units: C6,C6-1,E612,T631,R651,U672, Bel Air, Delta-Cardiff, Darlington, Fawn Grove, Jarettsville, Norrisville fire companies.