“…Sprinklers inside the chute activated to control the fire, but firefighters found smoldering material in or around the trash chutes from the second to the ninth floors…sparks produced by workers grinding metal with an 
industrial tool around the trash chute caused the fire…”
Clark County Firefighters were called Thursday morning to the Strip to extinguish a fire in a trash chute at the Planet Hollywood, which caused an estimated $100,000 in damage.
Firefighters responded to reports of smoke at 10:12 a.m. and discovered the fire, which was quickly contained, in a fifth-floor chute in the north hotel tower, according to Clark County spokesman Dan Kulin.
Heavy smoke was reported on several floors, and the fifth, sixth and seventh floors were evacuated, Kulin said.
For more:Â http://www.lasvegassun.com/news/2012/sep/13/planet-hollywood-trash-chute-fire-extinguished/
