When, in December 1953, Dragnet became the first American television show to broadcast in color, few fans knew they had a dusty nook on the California-Nevada border to thank for bringing it to polychromatic life. But every early cathode-ray tube color television owed its screen’s red hue to europium, a rare earth element excavated and processed exclusively at the Mountain Pass Mine in San Bernardino County. From the 1950s to the 1980s, Mountain Pass produced practically all known quantities of