Abstract: At approximately 10:20 a.m. on January 11, 2017, five employees were working in various sections of the McNeilus Truck-Manufacturing facilities when one of the onsite buildings exploded. The building was primarily constructed from metal sheets and contained wash bay, a prep area, a paint booth, a baker, and a showroom; and, a refuse truck was in the baker. The refuse truck was fueled by compressed natural gas and a line that was attached to the natural gas cylinders blew off its fitting and filled the area with natural gas. The gas ignited and the building exploded, injuring five employees. Three employees suffered contusions and smoke inhalation while the last two suffered burns over 50% of their bodies. Four employees were hospitalized.