The possibility that Getafe could have a man-made origin (i.e. ceramic and refractory tiles, industrial slag) was considered and proposed, by the first time, in 1999:
On 21 June 1994, José Martin was driving his car from Madrid to Marbella, in Spain, when a 1.4-kg meteorite crashed through his windscreen, ricocheted off the dashboard and injured the drivers finger, fortunately not seriously. More than 50 fragments were found within 200 m of the impact. Read more
Ed ~ The terrestrial rock was identified as a meteorite by Jesus Martinez-Frias, a planetary geologist at the Centre for Astrobiology in Madrid