The former Purdue Power Plant (HPN) with its iconic smoke stack and the attached Engineering Administration Building (ENAD) at the very heart of campus played important roles for most of the twentieth century. To many Purdue students and alumni, the smoke stack not only symbolized the emphasis at Purdue on technology but also provided a visible marker for the Purdue campus. The smoke stack was lovingly referred to by many as "Purdue's finger to the world." Amid controversy, the smoke stack was demolished in the early 1990s when the Purdue Clock Tower was constructed to locate the campus on...