| Oak Ridge, Tennessee | 
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Place: Oak Ridge, Tennessee 
    Element: Promethium
    Scientist: Marinsky, Glendenin, and Coryell 
    
  
| Oak Ridge, Tennessee | This museum opened in 1949 | American Museum of Science and Energy | "Oak Ridge: World War II Secret City." | Oak Ridge was created out of rural hillsides | 
| The Manhattan Project | decision to drop the atomic bomb | biggest fear during World War II | the whirlwind history of Oak Ridge | The Graphite Reactor (X-10) | 
| Y-12 was the huge "racetrack" | keeping the deflector beams on target | One of the original panels | Secrecy was stressed | model of the Graphite Reactor (X-10) | 
| where promethium was produced | author is pointing out the Graphite Reactor | the chemical separations | purpose of the Graphite Reactor | through the countryside | 
| Driving along Bethel Valley Road | Clinton area, dated 1947. | key locations are the Graphite Reactor | aerial view of the Clinton Engineering Works | Chemical separations building | 
| Graphite Reactor from the parking lot | Approaching the Graphite Reactor | Entering the building | The historic Graphite Reactor | (Graphite Reactor) | 
| sign beside the door | the "loading face" | Closeup of the loading face | amount of uranium | Uranium slugs | 
| The "moderator" | The shielding against radioactivity | The plaques | 50th anniversary plaque | Nuclear Historic Landmark | 
| The code name for the Graphite Reactor | National Park Service National Historic Landmark | Welcome to the Graphite Reactor | the Reactor Control Room. | View from the Reactor Control Room | 
| the Reactor Control Room | In the Control Room | The official log | Beyond the Reactor Control Room | Where America's Radioisotope production began | 
| the 4-inch carriers | samples were pulled into these lead shields | heavily shielded carts | a heavy lead shield called a 'pig | No leaving without a radiation check | 
| Outside a hot cell | During the formal visit | Dr. Ellison Taylor | This is the document | original site of the Chemistry Laboratory | 
| currently used for analysis | eastward on Central Avenue | southwestward on Central Avenue | scheduled for demolition | view northeastward | 
| mandate that visitors are escorted | Returning to the museum | Approaching the Y-12 plant | The Y-12 plant is still involved | Entrance to the Y-12 area | 
| An aerial view of Y-12 | Oak Ridge using the west route | gaseous diffusion process | Returning to the museum | author with Dr. Stephen Stow | 
| rich with exhibits | "uranium rush" | with the uranium craze | uranium prospecting kits | The "Revigitor" | 
| reception at the ASME | visitor scientists to Oak Ridge | The "Pioneers Hall" | The ACS historic plaque | Closeup of the plaque | 
Copyright ©2018, Dr. James L. Marshall and Virginia R. Marshall
    All Rights Reserved.