sentences:  Shell Development's senior scientific ranks included scientists who had been graduate students of Glenn Seaborg, a Berkeley scientist who pioneered techniques to create and verify transuranium elements.Shell Development also bore the indirect imprint of Robert Oppenheimer, director of the Manhattan Project.Manhattan Project alumni worked at Shell / Emeryville, and Oppenheimer himself is asserted to have been an offstage force in unionizing parts of Shell Development's workforce.