Prof. Searl used NEODYMIUM in his magnets long before it was "discovered" by the U.S. Airforce in 1966. The element NEODYMIUM was discovered in 1885 and was used in manufacturing of certain types of glass that would not transmit infrared rays. In the pure form it would produce the only bright purple glass known. This element was readily available to Prof. Searl in 1946.Reply to Mr. Anders Heerfordt