AN Elland factory has been ravaged by an inferno.
The blaze was one of the biggest in West Yorkshire for years. At its height 45 fire appliances were at the scene.
Police say two Elland men have been arrested in connection with the blaze.
Design and Display - a leading UK designer and maker of shopfitting equipment and retail displays - was engulfed by fire at about 10pm on Saturday night.
The factory on the Lowfields Business Park off Calderdale Way employs about 100 people.
No-one was injured as the fire took hold and spread rapidly.
Early indications are that it started in a lorry in the compound and then spread to other lorries and into the building.
Firefighters received reports of explosions in the single-storey building at about 10pm.
Crews from across West Yorkshire were sent to tackle the blaze.
At its height, more than 150 firefighters were trying to contain the blaze or providing vital back-up to the colleagues pouring thousands of gallons on the burning building.
About 70% of the 100 metre b y 50 metre building was gutted.
The fire crews used six powerful ground-based jets and three aerial appliances to fight the flames, which shot high into the night sky above Elland.
Six firefighters wore breathing apparatus as they aimed 14 water jets and two water curtains at the fire.
The battle continued into yesterday, with 10 crews using five water jets. They were being relieved at four-hourly intervals.
Crews are expected to be at the scene for another two days, damping down.
Watch Manager Rodger Binns, of Elland fire station, said: "The firm uses a lot of medium-density fibreboard in the manufacturing process. This is very condensed, tightly packed wood and glue, which just keeps burning.
"When it is doused with water the water makes a crust form on top of the MDF, but it still burns underneath.
"At the moment it is probably best to let it burn itself out and closely monitor it, rather than pour more water on, which could prolong the fire even further."
He added: "We could be there another two days yet and then demolition crews will move in.
"I've been in the fire service since 1989 and it is the biggest blaze I've ever seen."
Six lorries and a flatback truck were burned out and that is where investigators believe the fire may have started.
Elland photographer Graham Lynch captured these pictures of the incident as he returned home from work.
Mr Lynch, who lives near Lowfields Business Park, said: "I could see it from my house. I had just walked in and my neighbour came round to tell us to shut our windows because there was a lot of smoke.
"You could see a huge plume travelling towards Brighouse.
"My daughter and her boyfriend said we should have a look, so I took my photographic gear with me.
"It was really close to residential properties."
Vivian Wade, sister of the company director, Clive Lloyd and a spokesman for the firm, said it was devastating.
"The company was set up in the 1990s as a family concern, which makes it all the more distressing," he said.
"We were at a family celebration on Saturday evening when we heard the news about the fire."
"Clive and the others want to pass on their thanks, not only to the emergency services but also to their many employees, some of whom were there on Saturday night and yesterday, offering to do what they could to help."
The firm is moving to other premises at Lowfields and is trying to get machinery from other parts of the UK to try and get back in production within a few days.
The two men who were arrested have been released on police bail, pending further inquiries.