September 9th
1858 Carl Auer von Welsbach, researcher on rare earths; invented incandescent mantle (Welsbach Mantle or Auerlicht); discovered neodymium, praseodymium, 1885, and lutetium, with Georges Urbain, was born.
1929 Discovery of Konel, a cobalt-nickel alloy, announced by Westinghouse Laboratories.
1974 Albert Ghiorso and Glenn T. Seaborg announced the discovery of element 106 at the University of California, Berkeley.