Complex sentence: In October and November 2012, it was reported that Hamas had fired rockets at Dimona and/or Negev Nuclear Research Center, but the facility was not harmed or damaged in any of the attempted strikes.
Split into simpler sentences: In October and November 2012, it was reported that Hamas had fired rockets at Dimona and/or Negev Nuclear Research Center. The facility was not harmed or damaged in any of the attempted strikes.