Maintenance of the railroad in the United States. Workers wash,clean and inspect the engines. Shower and scrubber washes the locomotive. Workers undergo a regular check up of the electric engines. Diesel and steam locomotive parked on track. Locomotive moves on tracks.
Railroad research and railroad network in the United States. Worker works on springs for smoother rides. He studies and tests metals and parts. Rubber gloves are immersed and water and checked. Worker undergo a goggle test. Engineer checks metals for defects using electric current. Engineers study the internal structure of the metal casting and find defects at the X-ray laboratory. Locomotive moves on track. Animated map depicts: the network of railroads spread over various countries in America.
A film titled 'Inside the Atom' about the structure of atom and the use of radioactive isotopes in the treatment of cancer in Canada. A board on a shore reads 'Picture Taking Prohibited'. Buses drive past a sign reading 'Atomic Energy Project'. Buses are stopped at the entrance of the plant and are checked by security police. Identity cards of men are checked by the security police. Workers enter the plant. A worker walks on the plant grounds carrying a piece of a radioactive metal suspended from a rod. A minute fragment of matter is checked under a microscope. Canadian Chinese using primitive tools work on an air strip. Workers work in a coal mining factory.
A film about the structure of atom and the use of radioactive isotopes in treatment of cancer in Canada. Animation depicts: An atom resembles a minute solar system. The heart of the atom is the nucleus. Children approach an educational display with large sign "The Atom. U-235. What's next?" Group of boys gather under the sign and look up at the display. Children watch a model of the structure of an atom and animation is shown describing the density and number of atoms in a dot of ink. Splitting nucleus with a neutron to get atomic energy. A chain reaction when a uranium atom is split giving out heat and radiation.
A film about the structure of atom and the use of radioactive isotopes in the treatment of cancer in Canada. Exteriors of a uranium mine at Great Bear Lake. Coal being transported in a narrow gauge mining train. A man pours coal from a container. Exteriors of the Nuclear Fission Plant at the Chalk River. Trucks driven in front of the plant. Director Dr. Keyes, Dr. Lewis and K. F. Topper discuss. A four inch lead wall block to protect technicians working on radio active matter.
A film about the structure of atom and the use of radioactive isotopes in cancer treatment in Canada. Technicians weigh radioactive material in a chemical element. A technician observes the weight indicator on a scale through a microscope. The technician adjusts the balance arm.
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