In Regensburg, all six main workshops of the Messerschmitt factory were destroyed or severely damaged, as were many supporting structures including the final assembly shop. In Schweinfurt, the destruction was less severe but still extensive. The two largest factories, "Kugelfischer & Company" and "Vereinigte Kugellager Fabrik I", suffered 80 direct hits. 35,000 m² (380,000 square feet) of buildings in the five factories were destroyed, and more than 100,000 m² (1,000,000 square feet) suffered fire damage. All the factories except "Kugelfischer" had extensive fire damage to machinery when incendiaries ignited the machine oil used in the manufacturing process.