“…Ethyl • Xanthate-Molyb denum Extraction. After investigation of methods for the separation of large amounts of molybdenum from small amounts of rhenium (1,3,4,6,8,9), the ethyl xanthate-molybdenum extraction method of Hurd (4) and Malouf and White (6) was chosen for use. It combines a simple separation with a minimum of interference to the dioxime procedure.…”