UW Administration Building Bombing
June 29, 1969. At approximately 3:20 a.m., a huge explosion rocked the campus when two sticks of dynamite exploded outside the front doors of the UW Administration Building. The explosion blew a 4-foot hole in the steel-reinforced concrete floor of the entryway. The ceiling of a room below collapsed and over 700 windowpanes were shattered. Luckily, because of the late hour at which the bomb went off, no one was injured in the blast. The faculty senate offered a $10,000 reward for information leading to the arrest of the bomber, but no one ever claimed responsibility and no one was ever arrested for the crime.

Source: crimelibrary