May 29 - Jeff Mack's toughest job begins Tuesday. That's when Turner Construction begins to replace the Columbine High School library with a two-story atrium and prepares to build a new library onto ...

Harris and Klebold killed themselves with gunshot wounds to the head in the school’s library at approximately ... open fire inside Columbine High School, killing 13 and wounding 23 others ...

The death toll from the April 20, 1999, school shooting has increased to 13 students and one teacher. The two killers took ...

In this April 20, 1999 file photo, unidentified young women head to a library near Columbine High School where students and faculty members were evacuated after two gunmen went on a shooting ...

On April 20, 1999, high school students Dylan Klebold and Eric Harris, carrying homemade bombs and guns, launched an attack ...