Girardot, Crystal L. & Harlow, Donald G. Hanford Single-Shell Tank Leak Causes and Locations - 241-SX Farm, report, January 8, 2014; (https://digital.library.unt.edu/ark:/67531/metadc870771/m1/1/: accessed December 11, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .