McLain, H. A. Activity in the HFIR Primary Coolant System After a Meltdown of the Fuel in Reactor, report, June 10, 1960; (https://digital.library.unt.edu/ark:/67531/metadc871003/m1/1/: accessed September 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .