 Concurrently, she also studied for an Honours course in the Department of Anthropology ("Volkekunde") in the University of Pretoria and received her Honours degree cum laude, in 1972.In 1976 Plug started working at the newly created Department of Archaeozoology of the Transvaal Museum in Pretoria; initially as a volunteer for a small pay provided under the Liz Voigt’s research grant, with C.K.