Vintage 1960s home movie footage from Sioux Falls, South Dakota, featuring a lengthy metal sign board for the Pathfinder Atomic Power Plant. The clear blue sky and open landscape highlight the industrial landmark, showcasing mid-century nuclear energy design. This 8mm film clip captures a moment of Cold War-era innovation and engineering in the northern United States. Ideal for historical documentaries, retro nostalgia projects, and archival storytelling.