Various shots taken in a naval radioactivity research lab, 1954. A man applies a substance to a plate with a spray gun. Another man removes a metal plate from liquid in a clear container. The plate is connected by two wires to a Geiger counter. He uses a knife blade to scrape a sample from another plate that he places on a sheet of paper. A third man removes a negative attached to a metal bar from a large liquid-filled tub. He places the negative on a light table mounted on the wall in front of him and examines it. In a large room with a panel that reads "Danger – Radiation Hazard" two men work and use a Geiger counter to take readings of various metal objects. A woman places a liquid-filled container on a device and appears to take measurements. Two men work in front of two large measuring devices: they look at the indicator lights and turn knobs. Numbers can bee seen scrolling by on various displays. A woman and a man take different measurements separately. The man takes notes. Another man uses a power saw to cut a square section out of a large metal plate, which he then places in an observation device. Two men work in front of a wall filled with observation and measuring equipment. One of them uses a pen to write on a graph placed in a small box, which closes with a class cover. They observe the moving light of an oscilloscope.