On Wednesday morning at 5:10 am Chief 230, Asst. Chief 240, Safety 250, and Tower Ladder 241 all responded to Mahwah for working structure fire at a construction supply company. The crew from 241 split, one crew went to roof for master stream operations and ventilation, while the second crew went to the second floor on the side of the building to extinguish fire in the ceiling. Crews then kept rotating in the tower ladder to continue master stream operations. 241 crew was relieved at 11:30 am until being released at 1:30 pm. Great job by all on scene.