Firefighters are currently tackling a machine blaze in Liversedge.
Crews from Cleckheaton and Dewsbury were called to the incident at Crystal Works, Union Road, at around 1.20pm.
The machinery, used for plastic recycling, was 100 per cent involved in the fire and left the building heavily smoke logged.
The fire was extinguished using two breathing apparatus and one hose reel.
Crews remain at the scene.