>During the 1950s, middle managers at the former Feed Materials Production >Center at Fernald, 18 miles northwest of Cincinnati, would put a granular >uranium hexafluoride substance called ``green salt'' on their tongues to check >for the telltale metallic taste of a good sample. Is "green salt" UF6 or UF4? "Shlala gashle" (Zulu greeting, meaning "Stay safe") mike (mcnaught@LANL.GOV)