Manufacturing, Paper Mill / Saw Mill Fire controlled by sprinkler system at cedar remanufacture (Langley, BC) August 16, 2012 viking210 Ember smoldered and ignited some sawdust near a woodworking machine, which lit some nearby wood scraps, and finally set fire to a lift of lumber. That caused a sprinkler head directly above the blaze to activate. “The sprinkler system controlled the fire,” assistant fire chief Bruce Ferguson.