Emilio Segrè Visual Archives

More than 30,000 photos of scientists and their work

Oak Ridge National Laboratory F1

Share This


Oak Ridge National Laboratory F1

How will you use this image ?
Select one of the following options.
Individual Use
Not-for-profit Use
For-profit Use (educational only)
Not sure yet

We charge a usage fee per photo if the photo is published, reproduced in a product or publicly exhibited. This is not a license in the legal sense. As a non-profit institution, we do not make any money providing these photographs. It is only by assessing usage fees that we are able to cover the cost of providing publication quality copies of our photos, preserving the photograph collection according to archival standards, and providing access to the collection by maintaining an online image database. The copyright holder may charge a fee in addition to our service fee.

Images are for use in educational projects only and must be used in a respectful manner.

Image title: 
Calutron operators at an electromagnetic isotope separation plant in Oak Ridge National Laboratory during World War II.
Credit line: 
Oak Ridge National Laboratory and Digital Photo Archive, Department of Energy (DOE), courtesy of AIP Emilio Segrè Visual Archives

Calutron operators at an electromagnetic isotope separation plant in Oak Ridge during World War II.  Calutrons were overgrown mass spectrographs used to separate isotopes.  The name is an acronym for 'California university cyclotron.' Note the supervisor standing near the end of the row; neither he nor anyone else in the picture had any idea of the purpose of their labor, save that it was 'vital to the war effort.' Many women graduates from East Tennessee high schools tended the Y-12 control panels.  Each operator monitored two control panels.

Photo date: 
circa 1945
Original format: 
1 photographic print (black and white; 10 x 8 inches)
Oak Ridge National Laboratory