Kenilworth, NJ - A large commercial building housing the “Blue Blade Steel” metal fabricating company was struck by a four-alarm fire on the night of October 25th, causing damage to the manufacturing part of the building, but causing no injuries. Fire companies were dispatched at approximately 1:00 A.M. to 123 N. 8th St. A second-alarm was transmitted on arrival for heavy fire showing from the 'C' side of the large two-and-a-half story structure. A third-alarm was called for within minutes as flames broke through the roof. Crews entered the structure, but were quickly withdrawn when a member reported propane tanks venting inside the building. Flames traveled across the roof and dropped down to floor level. A fourth-alarm was sounded at about 1:40 A.M. Four elevated master streams were put into operation as well as several hand lines from the 'B' side and from a lower roof on the 'D' side. Companies made slow progress and the fire was placed under control at about 3:00 A.M. The cause is being investigated.