Friday night July 11th found firefighters from across Baltimore County and the region battling a 4-alarm warehouse fire in Woodlawn. Units were dispatched at 9:22 p.m. for a reported building fire at 6730 Whitestone Road. Utility 333 (Woodlawn volunteers) arrived first and reported heavy smoke and fire showing from a large 1-story warehouse. Baltimore County Fire Dept. Engine 3 arrived, with Captain Goodwin assuming command and reporting heavy fire through the roof of the building, which housed Concrete Business and Restoration. Rapidly deteriorating conditions forced firefighters to retreat from an offensive attack as command requested a second alarm. Multiple propane tank explosions, including one that sent debris flying over exposures and into the windshield of Engine 311 (Owings Mills VFC) forced crews to reposition apparatus away from the building. After heavy fire conditions forced command to abandon 2 of 3 ladder pipes, Tower 323 was utilized above the fire building for fire suppression and aerial reconnaissance, with the crew operating for several hours. As fire continued to burn in the building and exposures, command requested additional alarms. Multiple mutual aid was utilized on the scene, including BWI Tower 43, and Baltimore City Engine 55 and Truck 16, as well as for transfers (Carroll and Howard county apparatus) across Baltimore County. The fire was placed under control at 2:32 a.m. Two firefighters sustained minor injuries during the fire.