FERRARA, ITALY - MAY 20:  The factory of Sant'Agostino Ceramics is flattened following  an earthquake on May 20, 2012 in Ferrara, Italy. At least four people were killed after the magnitude 6.0 quake - which destroyed many histopric buildings - struck in the early hours. Two of the dead were working in the ceramics factory as the quake struck. (Photo by Roberto Serra/Iguana Press/Getty Images)