A fire broke out at The Sawmill at Stanley Ferry yesterday (Wednesday).
Crews and two engines from Wakefield Fire Station were called to the blaze at 8.45pm.
The cause of the fire is unknown but staff at the Sawmill said they were still open for business and that the incident had been minor.
The call came less than two hours after the firefighters went back to work after a third day of strike action.
The Fire Brigades’ Union has organised 15 short strike periods during eight consecutive days because of a dispute over pensions.
Crews will walk out twice a day, for two hours at a time, until Monday at 7pm.
Asst Chief Fire Officer Dave Walton said: “We have worked hard to develop a contingency plan for just this type of scenario, which ensures that we provide the best possible level of emergency cover for West Yorkshire, given the limited resources we will have available.
“This will be a challenge and our message, as ever, is that people should take extra care. By doing this, and by only calling us for genuine emergencies, we will do our very best to ensure the limited number of fire engines are available to those who need them most.”