How did the firemen die?
The four men, two of them based at Alcester and two at Stratford-upon-Avon, were among the first of the rescue teams to arrive.
They entered the plant but a short time later the roof collapsed. One fireman was pulled out and died later in hospital. The other three are missing, presumed dead.
Why did they go in?
Firemen make a judgment call in such situations as to who might be inside the premises. The only reason for them to go in quickly is if they fear there are people trapped inside. In this case, given the fire started at about 6pm, it is likely they were concerned that workers might have been trapped.
Were they following orders?
Yes. Stephen Haynes, the assistant county fire officer for Warwickshire, said yesterday that the men would have waited for the order from the incident commander once an initial assessment of the situation had been made.
Was there anyone else in there?
It is not yet known. Because of the intensity of the blaze, the precarious nature of the building parts of which were close to total collapse and because small fires, often sparked by gas leaking from rotting vegetables, kept springing up over the weekend, rescuers were only able to enter it yesterday.
How long will the search last?
The Fire Service believes it will take 36 hours.
This is because rescue teams will have to spend time making safe damaged parts of the vast building before they can properly search it.
Also, because they have no idea if others were in there, and if so how many, the search will be painstaking.
Who makes up the workforce?
Like many fruit and vegetable packers, Wealmoor Ltd, which owns the plant, is thought to employ migrant labour.
There is no suggestion they were breaching any regulations but the plant had been raided under its previous owners amid concerns that penniless workers were sleeping in the plant overnight.
Was it arson?
The police are treating the fire as arson. They said every fire of this nature was treated as suspicious until it can be proved otherwise. However, they are not currently treating the deaths of the firemen as murder, but as unexplained.
What will the investigation into the deaths focus on?
Primarily why the firemen entered the building so soon after arriving and whether there was any evidence of anyone trapped inside.
It will also focus on whether the company kept records of its workforce, saying who was in the building at the time, and whether this information was at hand to be provided to the emergency services.
By Nick Britten
Last Updated: 2:24am GMT 05/11/2007