The economic cost of the fire that gutted the 32 two story Windsor building in the centre of Madrid continues to mount. The Spanish city’s business district remains closed because of fears that the badly damaged structure could collapse. The authorities say around 10,000 people are not able to get to their places of work. The famous department store El Corte Ingles is inside the cordon. Employees of the US financial services firm Deloitte and Touche are in temporary offices. Spokesman Goyo Panadero said: “We had security measures in place to ensure that all the documents in the building were protected. But also we have back ups of data which is kept in other locations, away from this building.